ADDISONIA COLORED ILLUSTRATIONS AND POPULAR DESCRIPTIONS OF PLANTS Volume 6 1921 PUBLISHED BY THE NEW YORK BOTANICAL GARDEN (ADDISON BROWN FUND) PRESS OF THE NEW ERA PRINTING COMPANY LANCASTER, PA. CONTENTS Part 1 JuNB 29, 1921 PLATE PAGE 193 Acacia scapuliformis 1 194 Acacia pubescens 3 195 Acacia pulchella 5 196 Acacia leprosa 7 197 Acacia Nabonnandi 9 198 Acacia longifolia floribunda 11 199 Acacia armata 13 200 Acacia lineata 15 Part 2 SEPTEMBER 15, 1921 201 Gaylussacia brachycera 17 202 Coreopsis pubescens 19 203 Alonsoa caulialata 21 204 Malus Niedzwetzkyana 23 205 Hypopitys insignata 25 206 Pinus densiflora 27 207 Bergenia ligulata 29 208 Malus ioensis plena 31 Part 3 October 24, 1921 209 Cercis chinensis 33 210 Lathyrus latifolius 35 211 Magnolia stellata 37 212 Clerodendron Thomsonae 39 213 Bria gigantea 41 214 Bergenia crassifolia 43 215 Helichrysum bracteatum 45 216 Monarda didyma 47 iii iv Addisonia Part 4 March 9, 1922 217 Dahlia " Dahliadel Century " 49 218 Dahlia "Ami Nonin" 51 219 Dahlia "Mme. J. Coissard" 53 220 Dahlia "Marguerite Clark" 55 221 Dahlia "Miss Nannie B. Moor" 57 222 Dahlia "King of the Autumn" 59 223 Dahlia "W. W. Rawson" 61 224 Dahlia "Douglas Tucker" 63 Index 65 ADDISONIA COLORED ILLUSTRATIONS AND POPULAR DESCRIPTIONS OF PLANTS Volume 6 Number 1 MARCH, 1921 PUBLISHED BY THE NEW YORK BOTANICAL GARDEN (ADDISON BROWN FUND) JUNE 29, 1921 ANNOUNCEMENT A bequest made to the New York Botanical Garden by its late President, Judge Addison Brown, established the ADDISON BROWN FUND "the income and accumulations from which shall be applied to the founding and publication, as soon as practicable, and to the maintenance (aided by subscriptions therefor), of a high-class magazine bearing my name, devoted exclusively to the illustration by colored plates of the plants of the United States and its terri- torial possessions, and of other plants flowering in said Garden or its conservatories; with suitable descriptions in popular language, and any desirable notes and synonomy, and a brief statement of the known properties and uses of the plants illustrated." The preparation and publication of the work have been referred to Dr. John H. Barnhart, Bibliographer, and Mr. George V. Nash, Head Gardener. Addisonia is published as a quarterly magazine, in March, June, September, and December. Each part consists of eight colored plates with accompanying letterpress. The subscription price is $10 annually, four parts constituting a volume. The parts will not be sold separately. Address: THE NEW YORK BOTANICAL GARDEN BRONX PARK NEW YORK CITY Subscribers are advised to bind each volume oj ADDISONIA as completed, in order to avoid possible loss or misplacement oj the parts; nearly the whole remainder of the edition of Volumes 1 to 5 has been made up into complete volumes, and but few separate parts can be supplied. PLATE 193 ADDISONIA ML.LOJ&TV- ACACIA SCAPULIFORMfS Addisonia (Plate 193) ACACIA SCAPULIFORMIS l»»yN Acacia scapuliformis A. Cunn.; G. Don, Gen. Syst. 2: 405. 1832. Acacia cuUriformis A. Cunn.; G. Don, Gen. Syst. 2: 406. 1832. This, on account of its odd-shaped phyllodes and bluish grey color, is one of the most striking acacias in cultivation. It is said to flower in March and April, but in the conservatories of the New York Botanical Garden, where specimens are planted out in the central display house of range 2, the blossoms appear in Feb- ruary; the illustration was prepared from one of these. It becomes a rather large shrub which may be kept well-pruned and used as a hedge-plant in localities where the climate permits cultivation in the open. This acacia is well adapted to the cool conservatory, where it may be grown either in pots or planted out. The genus Acacia is a large one, containing upward of five hundred species, widely distributed in tropical and the warmer temperate regions. In Australia they are very numerous, those in cultivation here coming mainly from the southern or temperate areas; these will not stand much frost, but are said to survive a temperature as low as 18° to 20° Fahrenheit. There are two well-marked groups: in one the leaves are bi- pinnate, the species being widely distributed, some of them Austra- lian ; in the other group the so-called leaves are leaf -like developments of the rachis and petiole, called phyllodes, with the edges placed ver- tically—the species of this kind being confined almost exclusively to Australia and the Pacific islands. The temperate species are of easy culture, especially those from Australia, whence are derived the greater part of the kinds com- monly cultivated for ornament. In California a number of species are grown for ornament or for shade trees. Acacias grow very rapidly, reaching their maturity in twenty to thirty years, when they are apt to deteriorate, so for permanent effects other trees should be selected. Some of them make such rapid growth that ^ they become lanky and ungainly; such should be rather severely pruned, thus not only improving their general appearance, but also cr> 2 Addisonia increasing the number of blossoms. In cultivation under glass a night temperature of 40° to 50° is sufficient. Some of the dwarf species, such as Acacia armata (often cultivated under the name of Acacia paradoxa), A. lineata, and A. Drmnmondii, are especially- suitable for pot culture, making medium sized compact plants. Propagation may be effected by means of seeds, by cuttings, or by grafting. The seeds should be sown in the propagating house, preferably in the spring. Before sowing pour hot water over them, allowing them to remain in the cooling liquid from twelve to forty- eight hours; they are to be sown while still wet. The seeds thus treated should germinate in from one to four weeks, depending on the species. After germination they are pricked off into pots or flats, and repotted as necessity arises. For cuttings, of such species as may be propagated in this manner, select side shoots with a heel, taken from the main stem; the wood should be half ripened, the best time for this method of propagation being in June; no bottom heat, or very little, is required. Besides their value as decorative plants, many of the acacias are of economic importance. From A. Senegal most of the gum arable of commerce is obtained; A. Catechu furnishes a drug or medicine; from others are secured dyes and fibres, and the leaves of some are used for culinary purposes. Some furnish valuable wood for furni- ture and cabinet work. A. Seyal yielded the "shittim" wood of the Bible, employed for the Ark of the Covenant; this wood, on account of its lasting qualities, was used by the Egyptians for the coffins of their kings. The knife-shaped acacia is a shrub of a bluish-grey hue, the heads of bright yellow flowers borne in racemes. The phyllodes, closely arranged upon the branches, are falcate-elliptic or almost triangular, thick, up to an inch long and half an inch wide, the apex acute, cuspidate, the base wedge-shaped or somewhat rounded; the margins are thickened, and there is one nerve, not quite central, the lateral nerves and veins anastomosing quite prominently; there is a sessile gland on the upper edge below the middle, sometimes at the apex of an angle. The heads, containing thirty to forty flowers, are about three sixteenths of an inch in diameter, are on stalks shorter than their diameter, and are arranged in short racemes which are much longer than the phyllodes. The pods are brown, with the margins vein-like, and are often constricted between the seeds. The seeds are oblong and placed longitudinally. George V. Nash. Explanation of Plate. Fig. 1. — Flowering branch. Fig. 2. — Flower, X 4. Fig. 3.— Pistil, X 4. Fig. 4.— Fruit. Fig. 5.— Seed. PLATE 194 ADDISONIA \ / « A ^ "t. .^ >^ELCii?n_ ACACIA PUBESCENS Addisonia 3 (Plate 194) ACACIA PUBESCENS Hairy Wattle Native of New South Wales Family Mimosaceae Mimosa Family Mimosa pubescens Vent. Jard. Malm. 21. 1803. Acacia pubescens R. Br.; Ait. Hort. Kew. ed. 2. 5: 467. 1813. About the time of Easter there appears in the windows of the florists a plant of graceful habit, with drooping branches covered with delicate foliage of a greyish blue, and a profusion of bright yellow flowers in round heads. This is the hairy wattle, one of the most charming of the acacias. Those who visited the Inter- national Flower Show a few years ago will recall the wonderful display of these plants, in pot-grown specimens, one of the striking features of that show. The daintiness and gracefulness of the plant, and the pleasing harmony of the delicate foliage and the bright blossoms, make of this one of the most delightful objects in a cool conservatory, where it may be grown either in pots or as a permanent feature planted out. There is a specimen of this species in the central display house at conservatory range 2, New York Bo- tanical Garden ; it is from this plant that the illustration has been pre- pared. There is a collection of about twenty-five kinds of acacias in this same house, and as the flowering period of the diff"erent varieties varies, specimens may be seen in bloom from late in December to late March or early April. They grow rampantly when planted out, luxuriating in the freedom of root-action. This was one of the first of the Australian acacias with compound leaves to be brought into cultivation, having been introduced into England about 1790 by Sir Joseph Banks, who also introduced other species of the same genus. The hairy wattle is a shrub with hairy branches, compound leaves, and bright yellow flowers. The leaves are one and a half to three inches long and up to one and a quarter inches broad, with the rachis hirsute, and have up to ten pairs of spreading pinnae which are a half to three quarters of an inch long and up to five sixteenths of an inch wide; on the pinnae there are up to twenty pairs of leaflets which are oblong-linear, up to three sixteenths of an inch long, inequilateral at the base, obtuse or acutish at the apex. The globose heads contain fifteen to twenty flowers, are about three 4 Addisonia sixteenths of an inch in diameter, are on slender stalks longer than their diameter, and are arranged in racemes which are much longer than the leaves. The pods are a rich brown, often somewhat constricted between the seeds, up to two inches long. The seeds are elliptic, placed longitudinally in the pod. George V. Nash. Explanation of Plate. Fig. 1. — ^Flowering branch. Fig. 2. — Flower, X 4. Fig. 3.— Fruit. Fig. 4.— Seed. PLATE 195 ADDISONIA ACACIA PULCHELLA Addisonia S (Plate 195) ACACIA PULCHELLA Beautiful Acacia Native of West Australia Family Mimosaceae Mimosa Family Acacia pulchella R. Br.; Ait. Hort. Kew. ed. 2. 5: 464. 1813. This acacia was introduced into cultivation about 1803. It is quite in contrast with the other species illustrated here, being of compact growth with the branches rather intricately massed; it usually bears spines in the axils of the leaves. Arising from the axils of the upper leaves are solitary slender stalks, much exceeding the leaf, bearing a solitary globose head of flowers which is unusually large for the size of the plant. A plant of this, a compact mass of dark green covered with the numerous heads of orange flowers, is a most charming object, either as a pot plant or as a permanent feature, planted out, in the cool conservatory. From such a plant in the central display house, range 2, New York Botanical Garden, has the illustration been prepared. The beautiful acacia is a rather low usually glabrous shrub of dense habit and intricate branching, the leaves of a single pair of pinnae, and the orange flowers in solitary heads on slender stalks in the upper leaf-axils. The pinnae are a quarter to three eighths of an inch long and about a quarter of an inch wide, with four to seven pairs of leaflets which are about an eighth of an inch long and oblong-hnear, or sometimes a little broader at the obtuse apex. The flower-heads are a quarter to five sixteenths of an inch in diam- eter, solitary, on slender stalks up to a half inch long. The flat pod has thickened margins, and is one to two inches long. The seeds are oblong and placed longitudinally. George; V. Nash. Explanation of Plate. Fig. l. — Flowering branch. Fig. 2. — Flower, X 4. Fig. 3.— Pistil, X 4. Fig. 4.— Fruit. PLATE 196 ADDISONIA ACACIA LEPROSA Addisonia 7 (Plate 196) ACACIA LEPROSA Climbing Acacia Native oj New South Wales and Victoria Family Mimosacba^ Mimosa Family Acacia leprosa Sieber; DC. Prodr. 2: 450. 1825. Here is an acacia which makes an excellent plant for training on a column or against a wall in the cool house. The long slender branches have a decided drooping habit, breaking away from the main stem at a right angle with the upper part bending down in a willowy manner; in bloom the whole plant presents an appearance of wonderful grace and beauty. Quite in contrast with the more sturdy and bushy forms, it is a striking object in the conservatory. Specimens of this will be found in the central display house, range 2, New York Botanical Garden; the illustration was prepared from one of these. The climbing acacia is a tall shrub, more or less glutinous, with pendulous slender branches which are glabrous or sometimes minutely pubescent when young. The phyllodes, standing out at nearly a right angle to the stem, are linear, sometimes somewhat falcate,- up to three inches long and an eighth of an inch wide; the apex is acute or obtuse, with a short curved point, the base nar- rowed. The orange flower-heads, unusually large, are globose; they are on hairy stalks about equaling their own diameter, and occur solitary or in clusters of two or three in the axils of the phyl- lodes. The flowers usually have five sepals and five petals, the former about a half as long as the latter which are united to the middle. The flat pod is usually falcate, under a quarter of an inch wide, and has the oblong seeds placed longitudinally. George V. Nash. Explanation of Plate. Fig. 1. — Flowering branch. Fig. 2. — Bract, X 4. Fig. 3.— Flower, X 4. Fig. 4.— Pistil, X 4. PLATE 197 ADDISONIA E.eau^ f ACACIA NABONNANDI Addisonia ' 9 (Plate 197) ACACIA NABONNANDI Nabonnand's Acacia Garden Hybrid Family Mimosacka^ Mimosa Family This acacia is a garden hybrid, so I am informed by Mr. Louis Dupuy, from whom the plant in the New York Botanical Garden was secured, and was produced by crossing Acacia dealbata and A. decurrens: I was also informed by him that it originated on the littoral of the Mediterranean. M. Nabonnand, for whom the plant was named, was a noted rosarian who produced many new roses; he died in January, 1903, in his seventy-sixth year. This hybrid requires the treatment accorded to plants in a cool green- house. The specimen in the collection of the New York Botanical Garden, from which the illustration was prepared, is in the central display house at range 2. Nabonnand's acacia is a shrub, open and rather lanky in habit, the branches usually more or less hairy. The bipinnate leaves are up to five inches long and four inches broad, and have commonly from five to seven pairs of pinnae, the larger one and a half to two inches long and a half to three-quarters of an inch broad, the rachis commonly more or less hairy. The pinnae have from fifteen to thirty pairs of glabrous leaflets, at nearly a right angle to the rachis, a quarter to three eighths of an inch long; they are linear, falcate, and obtuse or acutish and apiculate at the apex. The bright yellow flower-heads are three sixteenths to a quarter of an inch in diameter; these are on short stalks about an eighth of an inch long and are arranged in rather loose ascending racemes, two and a half to four inches long, which arise from the axils of the upper leaves. The pod is about two inches long and nearly three eighths of an inch wide, and is somewhat curved, having the seeds placed longitudinally. Gkorge V. Nash. Explanation op Plate. Fig. 1. — Flowering branch. Fig. 2. — Bract, X 8. Fig. 3.— Flower, X 4. Fig. 4.— Petal, X 8. Fig. 5.— Fruit. PLATE 198 ADDISONIA ACACIA LONGIFOLIA FLORIBUNDA Addisonia 11 (Plate 198) ACACIA LONGIFOLIA FLORIBUNDA Narrow-leaved Sidney Golden Wattle Native oj New South Wales and Victoria Family Mimosaceae Mimosa Family Acacia flonbunda Willd. Sp. PI. 4: 1051. 1806. Acacia longifolia floribunda F. Muell.; Benth. Fl. Austral. 2: 398. 1864. This is one of the best of the acacias, both for cultivation as a flowering plant and for cut bloom. It forms a graceful shrub, with slender curved or somewhat drooping branches which bear in the axils of the phyllodes a great abundance of pale yellow blossoms, arranged in cylindric spikes instead of globose heads, as is the case in the other species illustrated here. In full bloom it is one of the most showy and attractive plants for the cool conservatory, either planted out or in pots. Its flowers have a delightful fragrance, a fragrance which is evident but not obtrusive, perfuming the air for a considerable distance. In the central display house, range 2, New York Botanical Garden, there are fine specimens of this acacia planted out; they form a striking feature in the large col- lection of acacias there. The illustration was prepared from one of these. The narrow-leaved Sidney golden wattle is a shrub, or more rarely a small tree, with the foliage at the ends of the glabrous, curved, or somewhat drooping branches. The phyllodes, which are placed at an acute angle to the stem, are commonly two to four inches long, rarely longer, and a quarter of an inch wide or less; they are glabrous, elongate linear-lanceolate, narrowed at both ends, and are distinctly nerved and more faintly reticulate. The pale yellow flowers are borne in dense ascending spikes, one to one and a half inches long, which arise from the axils of many of the upper phyllodes. The pods are about three inches long and three sixteenths of an inch wide, somewhat curved, and strongly con- stricted between the seeds, which are oblong and placed longitudin- ally. Gkorge V. Nash, ExpirANATiON OF PLATE. Fig. 1. — Flowering branch. Fig. 2. — Flower, X 5. Fig. 3.— Fruit. Fig. 4.— Seed. PLATE 199 ADDISONIA ACACIA ARMATA Addisonia 13 (Plate 199) ACACIA ARMATA Kangaroo Thorn Native oj southern Australia Family Mimosaceae Mimosa Family Acacia armata R. Br.; Ait. Hort. Kew. ed. 2. 5: 463. 1813. Acacia paradoxa DC. Cat. Hort. Monsp. 74. 1813. A plant of dense habit, with the breadth usually greater than the height, and the foliage of a deep rich green. It makes an excellent plant for the cool conservatory, and is one of the best for pot culture, flowering when comparatively small, its rich green foliage making a fine contrast with the bright yellow of its blossoms. It is much grown for the Easter display. This acacia has been in cultivation a long time, having been introduced in 1803 by Peter Good. There are fine specimens of this, planted out, in the central display house, range 2, New York Botanical Garden, and it is from one of these that the illustration has been prepared. It is said to make a good hedge-plant in regions where it may be grown in the open, and has been employed to reclaim sand dunes. The kangaroo thorn is a dense shrub of widely spreading habit, the branches somewhat hairy, and bearing stipular thorns, about a quarter of an inch long, at the base of the phyllodes. The ascending phyllodes are unequally elliptic or elliptic-ovate, a half an inch to an inch long and a quarter of an inch to a little more wide; they are a rich dark green, apiculate at the apex, with one nerve, nearer the upper margin, and several lateral nerves arising therefrom. The globose flower-heads are a quarter to three sixteenths of an inch in diameter, and are borne solitary on stalks three eighths to three quarters of an inch long. The sepals and petals are five, the former about half as long as the latter. The pods are straight or somewhat curved, one and a half to two inches long and three sixteenths to a quarter of an inch wide. The seeds are oblong and placed longi- tudinally. George; V. Nash. Explanation op Platk. Fig. 1. — Flowering branch. Fig. 2. — Flower, X 4. Fig. 3.— Fruit. Fig. 4.— Seed. PLATE 200 ADDISONIA J I 3 EZcJ2r,-} ACACIA LINEATA Addisonia 15 (Plate 200) ACACIA LINEATA Narrow Line-leaved Acacia Native of southeastern Australia Family Mimosa ceae Mimosa Family Acacia lineata A. Cunn.; G. Don, Gen. Syst. 2: 403. 1832. Acacia runciformis A. Cunn.; G. Don, Gen. Syst. 2: 404. 1832, AccLcia dasyphylla A. Cunn.; Benth. Lond. Joum. Bet. 1: 359. 1842. This is a shrub of rather low bushy habit, with slender hairy branches, and globose flower-heads borne in great abundance toward the ends of the branches. It is quite in contrast with the other species illustrated here, the short narrow phyllodes and the myriads of small flower-heads giving it an especially dainty and delicate appearance. It may be grown as a pot plant or planted out, in either case a charming shrub. There are well-developed specimens of it in the central display house, range 2, New York Botanical Garden; from one of these the illustration was prepared. The narrow line-leaved acacia forms a bushy shrub with slender hairy branches. The hairy phyllodes, which have a curved apex and are narrowed at the base, are a half to three quarters of an inch long and about a twelfth of an inch wide ; the margins are thickened and there is a longitudinal nerve near the upper margin. The bright yellow flower-heads, an eighth to three sixteenths of an inch in diameter, are solitary on slender glabrous stalks a quarter to a half inch long; there may be one or sometimes two or three in the axils of the upper phyllodes. The sepals and petals are five, the former distinct. The linear pods are curved, and are an eighth to a sixth of an inch wide. George V. Nash. ExpivANATiON OP Plate. Fig. l. — Flowering branch. Fig. 2. — Flower, X 5. Fig. 3.— Pistil, X 5. FORMER PLATES PLATE 74. PUTE 75. PLATE 76. PLATE 77. PLATE 78. PLATE 79. PLATE 80. PLATE 81, PLATE 82. PLATE 83A PLATE 83B, PLATE 84. PLATE 85. PLATE 86. PLATE 87. PLATE 88. PLATE 89. PLATE 90. PLATE 91. PLATE 92. PLATE 93. PLATE 94. PUTE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE PLATE 95. 96. 97. 98. 99. 100, 101. 102. 103. 104. 105. 106. lor. 103. 109. 110. 111. PLATE 112. PLATE 113. PLATE 114. PLATE 115. PLATE 116. PLATE 117. PLATE 118. PLATE 119. PLATE 120. PLATE 121. PLATE 122. PLATt 123. PLATE 124. PLATE 125. PLATE 126. PLATE 127. PLATE 128. PLATE 129. PLATE 130. PLATE 131. PLATE 132. PLATE 133. PIAROPUS AZUREUS SOLIDAGO ALTISSIMA PENTAPTERYGIUM SERPENS FREYLINIA LANCEOLATA ANNESLIA TWEEDIEI CRASSULA OUADRIFIDA ASTER CORDIFOLIUS ARONIA ATROPURPUREA ASTER NOVAE-ANGLIAE . GYMNOCALYCIUM MULTIFLORUM GYMNOCALYCIUM MOSTII EUONYMUS ALATA DIOSPYROS VIRGINIANA LEPADENA MARQINATA MAACKIA AMURENSIS BUERGER HIBISCUS OCULIROSEUS CORNUS OFFICINALIS OPUNTIA LASIACANTHA COTONEASTER SIMONSII ECHEVERIA NODULOSA HELIANTHUS ORGYALIS SYMPHORICARPOS ALBUS LAEVIGATUS SINNINGIA SPECIOSA STYLOPHORUM DIPHYLLUM ARONIA ARBUTIFOLIA HAMAMELIS JAPONICA HIBISCUS MOSCHEUTOS SOBRALIA SESSILIS CORNUS MAS SOLIDAGO SQUARROSA CALLICARPA JAPONICA ASTER LAEVIS OPUNTIA OPUNTIA ILEX SERRATA ARQUTIDENS OTHONNA CRASSIFOLIA MAGNOLIA KOBUS CRASSULA PORTULACEA VIBURNUM PRUNIFOLIUM SYMPHORICARPOS SYMPHORICARPOS SPIRAEA THUNBERGII COREOPSIS LEAVENWORTHII ECHINACEA PURPUREA LANTANA DEPRESSA ILEX VERTICILLATA VIORNA BALDWINII JUSSIAEA PERUVIANA SALVIA FARINACEA DIANTHERA CRASSIFOLIA CHAMAECRISTA DEERINGIANA SEDUM SPECTABILE CRATAEGUS 6UCCULENTA LIMODORUM SIMPSONII CELASTRUS ARTICULATUS OKENIA HYPOGAEA MENTZELIA FLORIDANA IPOMOEA TENUISSIMA FORSYTHIA FORTUNE I PENSTEMON DIGITALIS URECHITES PINETORUM EUPATORIUM MACULATUM HELIOTROPIUM POLYPHYLLUM PLATE 134. MALUS HALLIANA PLATE 135. HELIOTROPIUM LEAVENWORTHII PLATE 136. PENSTEMON CALYCOSUS PLATE 137. RHABDADENIA CORALLICOLA PLATE 138. CRATAEGUS MACROSPERMA PLATE 139. OXYDENDRUM ARBOREUM PLATE 140. EUPATORIUM COELESTINUM PLATE 141. PAPHIOPEDILUM ROTHSCHILDIANUM PLATE 142. HAMAMELIS VIRGINIANA PLATE 143. ARCTOTIS GRANDI3 PLATE 144. CRATAEGUS SPATHULATA PLATE 145. PENSTEMON HIRSUTUS PLATE 146. ORONTIUM AQUATICUM PLATE 147. ECHINOPSIS LEUCANTHA PLATE 143. VIBURNUM LANTANA PLATE 149. CENTAUREA MONTANA PLATE 150. ALONSOA MERIDIONALIS PLATE 151. LEUCOTHOE CATESBAEI PLATE 152. BRYOPHYLLUM CRENATUM PLATE 153. LILIUM HENRYI PLATE 154. CRATAEGUS CALPODENDRON PLATE 155. ELAEAGNUS MULTIFLORA PLATE 156. BULBOPHYLLUM GRANDIFLORUM PLATE 157. FAGELIA DIVERSIFOLIA PLATE 158. EUONYMUS PATENS PLATE 159. POINSETTIA HETEROPHYLLA PLATE 160. PENSTEMON TENUIFLORUS PLATE 161. VIBURNUM DILATATUM PLATE 162. DIPLOTAXIS TENUIFOLIA PLATE 163. PIERIS FLORIBUNDA PLATE 164. ROSA "DR. VAN FLEET" PLATE 165. AMYGDALUS DAVIDIANA PLATE 166. VERNONIA CRINITA PLATE 167. PLATYCODON GRANDIFLORUM PLATE 168. BENZOIN AESTIVALE PLATE 169. CEPHALANTHUS OCCIDENTALIS PLATE 170. CORYLOPSIS SPICATA PLATE 171. ADLUMIA FUNGOSA PLATE 172. APHELANDRA NITENS PLATE 173. CORYLUS ROSTRATA PLATE 174. DRACOCEPHALUM SPECIOSUM PLATE 175. HYDRANGEA OUERCIFOLIA PLATE 176. JEFFERSONIA DIPHYLLA PLATE 177. CRATAEGUS PHAENOPYRUM PLATE 178. VIBURNUM SIEBOLDII PLATE 179. STEPHANANDRA TANAKAE PLATE 180. MONARDA MEDIA PLATE 181. CLETHRA BARBINERVIS PLATE 182. SOLIDAGO RUGOSA PLATE 183. CERATOSTIGMA PLUMBAGINOIDES PLATE 184. GROSSULARIA CURVATA PLATE 185. ROSA "eDITH CAVELL" PLATE 186. RUDBECKIA LACINIATA PLATE 187. PENSTEMON SECUNDIFLORUS PLATE 188. PINUS THUNBERGII PLATE 189. PHYSALIS FRANCHETII PLATE 190. PTEROSTYRAX HISPIDA PLATE 191. KOELREUTERIA PANICULATA PLATE 192. EPIPHYLLUM HOOKERl CONTENTS PLATE 193. ACACIA SCAPULIFORMIS PLATE 194. ACACIA PUBESCENS PLATE 195. ACACIA PULCHELLA PLATE 196. ACACIA LEPROSA PLATE 197. ACACIA NABONNANDI PLATE 198. ACACIA LONGIFOLIA FLORIBUNDA PLATE 199. ACACIA ARMATA PLATE 200. ACACIA LINEATA ADDISONIA COLORED ILLUSTRATIONS AND POPULAR DESCRIPTIONS OF PLANTS Volume 6 Number 2 JUNE, 1921 PUBLISHED BY THE NEW YORK BOTANICAL GARDEN (ADDISON BROWN FUND) SEPTEMBER 15,1921 ANNOUNCEMENT A bequest made to the New York Botanical Garden by its late President, Judge Addison Brown, established the ADDISON BROWN FUND "the income and accumulations from which shall be applied to the founding and publication, as soon as practicable, and to the maintenance (aided by subscriptions therefor), of a high-class magazine bearing my name, devoted exclusively to the illustration by colored plates of the plants of the United States and its terri- torial possessions, and of other plants flowering in said Garden or its conservatories; with suitable descriptions in popular language, and any desirable notes and synonomy, and a brief statement of the known properties and uses of the plants illustrated." The preparation and publication of the work have been referred to Dr. John H. Barnhart, Bibliographer, and Mr, George V. Nash, Head Gardener. Addisonia is published as a quarterly magazine, in March, June, September, and December. Each part consists of eight colored plates with accompanying letterpress. The subscription price is $10 annually, four parts constituting a volume. The parts will not be sold separately. Address : THE NEW YORK BOTANICAL GARDEN BRONX PARK NEW YORK CITY^ Subscribers are advised to bind each volume of ADDISONIA as completed, in order to avoid possible loss or misplacement of the parts; nearly the whole remainder of the edition of Volumes 1 to 5 has been made up into complete volumes, and but few separate parts can be supplied. GEORGE VALENTINE NASH One of the editors of this journal from its establishment, died in New York City, July 15, 1921 PLATE 201 ADDISONIA ^r^* \ -^ GAYUUSSACIA BRACHYCERA Addisonia 17 (Plate 201) GAYLUSSACIA BRACHYCERA Box-huckleberry Native of eaUern Pennsylvania, eastern Maryland, and Delaware Family Vacciniaceae; Huckleberry Family Vaccinium hrachycerum Michx. Fl. Bor. Am. 1: 227. 1803. Vaccinium buxifolium Salisb. Parad. Lond. pi. 4. 1806. Gaylussacia brachycera A. Gray, Mem. Am. Acad. II. 3: 54. 1846. Some of our native plants, both genera and species, seem to be on the verge of extinction. The box-huckleberry was doubtless more abundant in the past; it scarcely could have been less so. At present, only four plants are known in the wild state. Whether unfavorable meteorologic or pyric conditions or very destructive organic epidemics, resulted in its decrease, we shall never know. The several plants referred to above vary in size from a few square feet to m.any acres in extent. The growth is apparently connected under ground and each plant is essentially sterile to its own pollen and practically no seedlings are produced in nature. Thus the evi- dence indicates that the four "colonies" are really four individuals. The species was discovered in Virginia by Andre Michaux about the end of the eighteenth century. This locality was not again found; the plant may have been destroyed. About half a century later it was discovered in the mountains of eastern Pennsylvania. This remained the sine qua non and a mecca for plant-lovers for about a quarter of a century. Then a second plant was found in the very heart of Delaware — in the Coastal Plain. About the close of another half century, following the passing away of the genera- tion of botanists responsible for the discoveries referred to above, the succeeding generation have added two more plants to the list. One again in the mountains of eastern Pennsylvania, the other again in the Coastal Plain, this time, however, in Maryland, on the western side of Chesapeake Bay. If the box-huckleberry could be successfully cultivated it would supply the most beautiful native evergreen woody ground-cover. Its leaves resemble those of a southern holly — the cassjne — and when densely placed in patches or banks of greenery they form a unique ground-cover. The effect of the verdure is greatly enhanced at times, in the spring by the myriads of bright pink flowers and in 18 Addisonia the slimmer by the blue fruits. The plant needs an acid for its growth. It thrives best in a humus derived from its own decaying leaves, and it also grows well in a humus derived from decaying oak leaves and from those of related trees. This beautiful evergreen is a plant of the past, not only as a spe- cies, but also from the standpoint of the individual. By calculating the rate of the annual growth the largest plant we are now ac- quainted with would be several thousand years old. The box- huckleberry thus justly deserves to be called the " Methuselah of the Huckleberries." The box-huckleberry is a low shrub extensively spreading under- ground, the branchlets mostly less than a foot tall, branched, the twigs bright green, glabrous, slightly zigzag, with a ridge below each leaf. The leaves are alternate, rather numerous, sometimes distich- ously spreading, persistent and evergreen. The blades are elliptic to ovate, one inch long or less, usually about three quarters of an inch long, short-petioled, deep green and shining above, pale green and rather dull beneath, obscurely veined on both sides, glabrous, obtuse, shallowly crenate-serrate, with a more or less readily decid- uous stipitate gland on each tooth. The flowers are few and several together in sessile or short-stalked panicle-like racemes, in the axils of the upper leaves, usually crowded. The bractlets are scale-like, one twelfth to one sixth of an inch in length, obovate, oval, or ovate, obscurely ciliolate. The hypanthium is glabrous, green and saucer- shaped. The sepals are ovate to orbicular-ovate or deltoid, or triangular-ovate, about one twenty-fourth of an inch long, obtuse or acute, glabrous. The corolla is pink or rarely white, one fourth of an inch long or less, urceolate, angled, glabrous, with the lobes broader than long, obtuse, much shorter than the tube. The ten stamens are erect, included. The filaments are flat, linear, and slightly tapering above the middle, magenta, finely pubescent, at least ciliate, more than one twelfth of an inch long. The anthers are much shorter than the filaments, green, glabrous, with each sac prolonged into a short tubular tip which opens lengthwise. The ovary is depressed, glabrous, inferior. The style is columnar-conic, arising from the depressed cup-like apex of the ovary, expanded into the somewhat disk-like stigma at the apex. The drupe is berry- like, pyriform, about a half inch long or less, or the very late ones much smaller, purple-black beneath the glaucous bloom which some- what disappears in age, more or less nodding on the short stalk. The pulp is quite juicy and abundant, enclosing ten pale flat seeds which are about one twelfth of an inch long. John K. Small. Explanation op Plate. Fig. L — Tip of flowering branch. Fig. 2. — Corolla laid open and split between two of the lobes, X 2. Fig. 3. — Stamen, X 5. Fig. 4. — Flower with the corolla removed, X 3. Fig. 5. — Fruiting branch. PLATE 202 ADDISONIA COREOPSIS PUBESCENS Addisonia 19 (Plate 202) COREOPSIS PUBESCENS Star-tickseed Native of the southeastern United States Family Carduacibae Thisti