458 



THE DICTIONARY OF GARDENING, 



D. transparens (transparent).* fl. transparent white, tinged with 

 purplish-rose towards the tips, Iin. to Ijin. a 

 ' 



Dendrobium continued. 



leaf, which is 9in. long by Jin. in diameter. North-east Aus- 

 tralia, 1823. A pendulous stove evergreen species. (B. M. 4711.) 



D. thyrslnorum (thyrse-flowered). A synonym of D. densiftorum 

 albo-luteum. 



D. tortile (twisted). /. pale yellow, almost white, suffused with 

 purplish-rose ; sepals and petals long, slightly twisted. June. 

 Pseudo-bulbs 1ft. to IJft. high, iin. in diameter. Moulmein, 

 1847. An erect stove evergreen species, flowering in the same 

 manner as D. nobile. (B. M. 4477.) The variety roseum is 

 extremely pretty, having flowers of a delicate rose, shaded with 

 yellow. It resembles the type in every other respect. 



t white, 



r _. r across, produced in 



pairs along the stems ; lip stained in the middle with a blotch of 

 deep crimson encircled by a yellow zone. March. Pseudo-bulbs 

 1ft. to IJft. high. Assam, &c. An elegant, slender, erect stove 

 deciduous plant. (B. M. 4663.) 



D. triadenium (three-gland-lipped). A synonym of D. mutdbile. 



D. Wardianum (Ward's).* fl. about 3iin. in diameter, thirty to 

 forty to a pseudo-bulb ; sepals and petals white, upper portion 

 bright rich magenta, broad, thick, wavy, blunt at the tips ; lip 

 large, white above, rich orange in the lower part, with two deep 

 eye-like spots of crimson-magenta. May. Pseudo-bulbs 2ft. to 

 4ft. long, Iin. in diameter ; nodes about liin. apart. Assam, 1863. 

 A splendid stove deciduous species, requiring to be cultivated in a 

 basket or upon a block of wood, as its stems are long and pendu- 

 lous, the joints much swollen. During the growing season, it enjoys 

 an abundant supply of water, with a good heat ; but, when the 

 growths are complete, the plant should be removed to a cooler 



atmosphere, and less water, as a matter of course, will suffice. The 

 two following varieties are both rare and very desirable : candidum 

 (= album) sepals and petals pure white ; hp the same, but with 



, 



an orange-coloured base. (F. M. n. s. 212.) Lowii, flowers white, 

 rose, purple-brown. 



D. Williamson!! (Williamson's). fl. ivory-white, slightly tinged 

 with brown ; lip large, with a blood-red spot. Stems erect, bear- 

 ing strap-shaped leaves, clothed with short soft hairs. Assam, 

 1869. Stove plant, somewhat difficult to cultivate. 



D. xanthophlebium (yellow- veined).* fl. produced in pairs upon 

 the last matured and older pseudo-bulbs ; sepals and petals 

 white; lip medium-sized, spotted with orange; margin white. 

 Pseudo-bulbs very small. A. 1ft. Moulmein, 1864. Stove. 

 HYBRIDS. The hybrid forms, although not numerous, 



are well worth cultivating. Unlike those of many other 



genera, they do not materially outdistance their progenitors 



in either form, colour, beauty, or other respect. Those 



mentioned below are fairly representative: 



D. Alnsworthii (Ainsworth's).* fl. about 3in. across, with a strong, 

 Violet-like perfume ; sepals and petals white, with a slight tinge 

 of rose ; lip white, with a large central blotch of claret-colour. 

 February and March. Pseudo-bulbs 1ft. to 2ift. long, about iin. 

 in diameter. A strong, erect, stiff-growing stove plant, the foliage 

 of which is retained on each pseudo-bulb for two years. Obtained 

 from D. heterocarpum and D. nobile. (G. C. n. s., viii. 166.) 



D. Dominyanum (Hominy's), fl. rose-coloured, very pretty, 

 produced upon two-year old bulbs. Spring. A very pretty hy- 

 brid between D. nobile and D. Unaurianum, with habit and 

 growth of the former. It is interesting from being the result of 

 one of Mr. Dominy's first efforts in hybridising Orchids. Stove. 



D. endoobaxis (side-flowering).* fl. produced from the sides of 

 the two-year old pseudo-bulbs ; sepals and petals nearly pure 

 white ; lip the same, but with brown lines. January. Pseudo-bulbs 

 lit. long, 4in. in diameter. A very handsome stove plant, the 

 result of a cross between D. heterocarpum and D. moniliforme. 



D. Leechlanum (Leech's).* fl., sepals and petals white, tipped 

 with rose-purple ; lip margined with white ; centre a large dark 

 purple blotch. Hybrid between D. aureum and D. nobile. Green- 

 se. (Gn., July 7, 1883.) 



D. rhodostoma (red-mouthed), fl. three or four together in a 

 pendulous bunch, which is produced from the upper parts of one- 

 year and older pseudo-bulbs ; sepals and petals deep rose ; lip 



large, well expanded, rosy-purple, with deep purple markings. 

 Autumn. Pseudo-bulbs 2ft. to 2ift. high, Jin. in diameter. A 

 very handsome Veitchian hybrid between D. Huttonii and 

 D. sanguinolentum. Stove. 



D. splendidissimum (very splendid), fl., sepals and petals 

 cream-coloured, tipped with purple ; lip yellowish, with a black- 

 ish-purple disk. A fine hybrid between D. aureum, and D. nobile 

 or D. macrophyllum. Stove. 



DENDROCHILUM (from dendron, a tree, and 

 cheilos, a lip; in allusion to the plant having lipped 

 flowers and growing as an epiphyte on trees). OED. 

 Orchidece. A small genus of two or three species of 

 stove Orchids, with long pendulous racemes of rather in- 

 conspicuous yellowish flowers, and narrow, one-leaved 

 pseudo-bulbs. The two species which have been in cul- 

 tivation are D. aurantiacum and D. pallidiflavens. 



Dendrochilum continued. 

 D. Cobbianum. See Platyclinis Cobbiana. 

 D. filiforme. See Platyclinis filiformis. 

 D. glnmaceum. See Platyclinis glumacea. 



DENDROCOLLA. A synonym of Sarcochilus. 



DEXDROMECON (from dendron, a tree, and mekon, 

 a Poppy). ORD. Papaveracece. A hardy shrubby plant, 

 thriving in a light rich loam. Increased from cuttings. 

 D. rigida (stiff).* Tree Poppy, fl. yellow; sepals two, ovate, 



caducous; petals four; stamens numerous. June. I. rigid, 



igid, 



entire. California. The common name is very appropriate, the 

 plant having the appearance and character of the Poppy tribe, 

 together with a woody stem and branches. (B. M. 5134.) 



DENDROPANAX (from dendron, a tree, and Panax; 



Tree Panax). OED. Araliacece. Very handsome and 



effective stove foliage plants. There are about twenty 



species, natives of tropical Asia and America, as well as 



China and Japan; but the one given below is the only 



one in general cultivation. For culture, see Panax. 



D. argenteus (silvery-leaved). I. alternate, oblong, entire, about 



1ft. in length, tapering at the base, pointed or rounded at the 



apex ; upper surface silvery- white ; veins greenish ; lower surface 



purplish ; leafstalks long, stout. Stem somewhat fleshy, spotted. 



Brazil, 1878. 



DENDROSERIS (from dendron, a tree, and sen's, a 



kind of endive ; referring to its habit and form of leaves). 



OED. Composites. Handsome greenhouse trees, thriving 



in a rich loam. There are seven species, all natives of 



Juan Fernandez, but probably the only one hitherto intro- 



duced is that described below. Propagated by seeds. It 



is, however, usually cultivated from imported plants. 



D. macrophylla (large-leaved). fl..heads deep orange. Sum- 



mer. Stem usually simple, surmounted by a crown of leaves and 



a drooping panicle of large flowers, h. 10ft. 1877. (B. M. 6353. ) 



DENHAMIA. See Culcasia. 



DENTARIA (from dens, a tooth; referring to the 

 fanged roots). Toothwort. OED. Cruciferce. A genus of 

 very ornamental hardy herbaceous perennials. Radical 

 leaves none or few, on long stalks; cauline ones stalked, 

 placed on the middle of the stem, alternate or in whorls, 

 palmately or pinnately cut. Stem erect, bearing the 

 raceme at the top ; pedicels filiform, bractless. Rootstocks 

 creeping, scaly. They are of very simple culture in a 

 rich, light soil, and a moist, shaded situation. Propagated 

 by carefully-made divisions of the root ; or by seed. There 

 are about twenty species, all confined to North temperate 

 regions. 



D. bulbifera (bulb-bearing), fl. purple, few, rather large. April. 

 I., cauline ones alternate, pinnate ; upper ones undivided, or with 

 few segments, for the most part bearing bulbs in the axils. 

 h. lift, to 2ft. Europe (England). (Sy. En. B. 107.) 



D. digitata (digitate).* fl. rich purple. May. I., cauline ones 

 many, alternate, stalked, palmately cut into five oblong-lan- 

 ceolate, pointed, grossly serrated segments, h. lift. South 

 Europe, 1659. (L. B. C. 757.) 



D. diphylla (two-leaved).* fl. white on the inside, purple on the 

 outside. May. I., cauline ones two, alternate, on short stalks, 

 cut into three ovate-lanceolate, grossly and unequally serrate- 

 lobed segments. A. 6in. to 1ft. North America, 1810. (B. M. 

 1465.) 



D. glandulosa (glandular), fl. purplish. May. I. three in a 

 whorl, stalked, ternate; segments oval - lanceolate, acuminated, 

 serrated, bearing glands in the axils. A. 1ft. Hungary, 1815. 



D. laclniata (jagged), fl. rose-coloured, or almost white, large. 

 April. I. three in a whorl, on short stalks, three-parted ; lobes 

 or segments linear, entire, or deeply serrated or jagged. A. 1ft. 



D. pinnata (pinnate), fl. white, or pale purple, large. May. 

 L, cauline ones alternate, stalked, pinnate ; segments oblong, 

 acuminated, serrate-toothed. A. 1ft. Switzerland, <fcc., 1683. 

 (R. G. 623.) 



D. polyphylla (many-leaved).* fl. cream-coloured, large. May. 

 I. three in a whorl, or alternate, stalked, pinnate ; segments 

 seven or nine, approximate, lanceolate, acuminated, serrated. 

 A. 1ft Hungary, 1817. (K. G. 171.) 



D. tenella (slender), fl. purple, about the size of those of Car- 

 damine pratensis. April. I. two, alternate, sessile, cut into three 

 linear-elliptical entire segments. A. 9in. North America, 1826. 

 DENTATE. Having the margin divided into incisions 



resembling teeth. 



