486 



THE DICTIONARY OF GARDENING, 



Dodecatheon continued. 

 D. ML glgantenm (gigantic). A larger form in all its parts than 



the normal type, with pale green leaves ; it also comes into flower 



about ten days earlier than D. Meadia. 

 D. ML lancifolinm (lance-leaved).* /. pink or rose, yellow 



towards the base ; sepals and petals four each ; scapes lift, to 2ft. 



in height, supporting large umbels. Late spring. I. large, 6m. 



to lOin. long, or more, narrowly-spathulate, tapering towards the 



base. A. IJft. to 2ft. Rocky Mountains, 1867. A very distinct 



plant, easily recognisable by its very large leaves. SYN. D. Je/reyi 



(of gardens). (F. d. S. 1662.) 



Other forms are : albiflorum (white-flowered) (L. B. C. 1489) and 

 lilacinum (lilac-flowered). 



DOG ROSE. See Rosa canina. 



DOG'S BANE. See Apocynum. 



DOG'S MERCURY. See Mercurialis perennis. 



DOG'S-TOOTH VIOLET. See Erytlironiuin. 



DOGWOOD. See Comus. 



DOLABRIFORM. Hatchet-shaped. 



DOIilCHOS (from dolichos, long ; in reference to the 

 length of the twining stems, which in some species extend 

 to the tops of the loftiest trees). OED. Leguminosce. A 

 hwge genus of stove, greenhouse, or hardy herbs or sub- 

 shrubs. Flowers solitary or clustered in the axils, or in 

 stalked racemes. Leaves pinnately trifoliolate ; leaflets 

 stipellate ; stipules acute. Stems usually twining. Very 

 few species are grown in gardens. They are of easy 

 culture. All are increased by seeds ; or cuttings of the 

 perennials root readily under glass, in sand. 



D. bicontortus (twice-twisted), fl. white and purple, dis 

 on long peduncles. Summer. I. trifoliate, on long pet 

 Japan, 1869. Half-hardy climber. 



D. lignosns (woody).* fl. rose-coloured, with a purplish keel ; 

 umbellate. July. I., leaflets ovate, acute, smooth, glaucous 

 beneath. Stem woody ; branches twining, rather villous. India, 

 1776. Greenhouse evergreen. (B. M. 380.) 

 DOLIOCARFUS (from dolios, deceitful, and karpos, 



& fruit ; fruits, though beautiful, are poisonous). OED. 



DilleniacecB. A genus of mostly climbing shrubs, from 



tropical America. There are about a score species, very 



few of which have been introduced to cultivation, or are 



worth growing. For culture, see Delima. 



D. Callnea (Calinea). /. white ; peduncles lateral, many- 

 flowered. April, fr. a small fleshy shining berry. I. oblong, 

 acuminated, quite entire. Guiana, 1822. Stove climber. (A..G. 221.) 



DOLLINERA. See Desmodium. 



DOMBETA (named in honour of Joseph Dombey, a 

 French botanist of the eighteenth century ; he travelled in 

 Peru and Chili as the companion of Ruiz and Pavon). 

 OED. Sterculiaceoe. Ornamental stove evergreen trees 

 or shrubs. Flowers axillary or terminal, in few or densely- 

 flowered cymes. There are nearly thirty species, all 

 natives of Africa or the Mascarene Islands. They thrive 

 in a compost of sandy loam and turfy peat. Cuttings 

 of nearly firm young shoots will root in sand, if placed 

 under a glass, and in bottom heat, in April. 

 D. acntangnla (acute-angled), fl. red, large, in dichotomous 

 crowded corymbs. I. smooth, cordate, acuminate, with three 

 to five incised shallow, broad, or deep narrow, palmate lobes. 

 A. 10ft. Mauritius, 1820. A low tree or shrub. SYN. D. angu- 

 lata. (B. M. 2905 represents a variety in which the leaves are 

 not at all lobed.) 



D. aagnlata (angled). A synonym of /). acutangula. 

 D. Burgesslse (Mrs. Burgess's).* fl. large, with spreading white 

 petals, marked at their bases with a pleasing bright rosy tint, 

 which also extends up the veins into the centre ; disposed in large 

 corymbose clusters. August to December. I. bright green, 

 pubescent, from 6in. to 9m. long. A. 10ft. South Africa, 1865. 



(rusty-leaved), fl. white. A. 15ft. Mauritius. 



D. 8 ferruglnea 



D. Mastersil (Masters's).* fl. white, fragrant ; peduncles axillary. 



bearing simple or sub-compound corymbs. I. cordate -ovate, 



velvety. Tropical Africa, 1867. (B. M. 5639.) 

 D. viburniflora (Guelder-rose-flowered), ft,, white, about lin. 



across, borne in terminal corymbose heads, oin. in. diameter. 



February. 1. large, cordate, thrte-lobed. A. 15f.. Comorin 



Islands, 1850. (B. M. 4568.) 



DONDIA. A synonym of Hacquetia (which see). 

 DONDISZA. A synonym of Plectrouia (which see). 



DOODIA (named after Samuel Doody, a London 

 apothecary and botanist). ORD. Filices. A small genus 

 of greenhouse Ferns. Fronds pinnate or pinnatifid. In- 

 volucres membranous, the same shape as the sorus. Sori 

 oblong or slightly curved, superficial, placed in one or 

 more rows, parallel with, and between, the midribs and 

 margins of the pinnae. For culture, see Ferns. 



D. aspera (rough).* sti. 2in. to 4in. long, erect, asperous. 

 fronds 6in. to 18in. long, 2in. to 4in. broad, oblong-lanceolate, 

 with numerous spreading linear pinnoe on each side, which are 

 lin. to 2in. long, Jin. broad; margin strongly serrated, base 

 dilated, sori oblong, in one or two rows. Temperate Australia, 

 1808. D. a. corymbffera is a very pretty form, having the apex 

 of the fronds densely crested. 



D. blechnoides (IMechnum-like). sti. Sin. to 4in. long, erect. 

 fronds IJft. long, 6in. broad, oblong-lanceolate, with numerous 

 spreading linear pinnae on each side, which are about 3in. long 

 and Jin. broad, with sharply serrated margins and dilated bases. 

 New South Wales, 1835. In the true type of this species, the 

 upper pinnae are connected, the lower ones shorter and free, not 

 dwindling down to auricles, which, Mr. Baker notes, is the case 

 with the plant grown under this name. 



D. oandata (tailed), sti. 4in. to 6in. long, slender, smooth. 

 fronds 6in. to 12in. long, IJin. to 2in. broad, lanceolate, with 

 numerous spreading linear pinnae on each side, which are about 

 lin. long ; frond often terminated by a long entire point. Aus- 

 tralia, Ac., 1820. 



D. C. confluens (confluent), fronds long, narrow, linear, upper 

 part undivided, sinuato-pinnatifid in the lower part, with short 

 rounded lobes. New Caledonia. SYN. D. lineans. 



D. dives (Dives), gti. 6in. to 12in. long, slender, erect, smooth, 

 scaly towards the base, sterile fronds 1ft. long, 3in. to 5in. 

 broad, oblong-lanceolate, with numerous spreading oblong-linear 

 pinnae on each side, which are 2in. to 3in. long, iin. broad ; 

 margin undulated and serrated, fertile fronds longer, with narrow 

 linear pinnae, sori linear-oblong. Ceylon. 



D. linearis (linear). A synonym of D. caudata confluens. 



D. lunulata (crescent-shaped). A synonym of 1>. media. 



D. media (middle).* sti. 4in. to 6in. long, erect, smooth, fronds 

 1ft. to lift, long, IJin. to 4in. broad, lanceolate, with numerous 

 spreading linear pinnae on each side, which are lin. to 2in. long, 

 and about Jin. broad ; margin toothed, the upper ones dilated and 

 connected at the base, those below the middle free and cordate, 

 the lower ones gradually diminishing, sori short, oblong, distant. 

 SYN. D. lunulata. There are several varieties, among which the 

 following may be named : 



D. m. durinscnla (rather hard), fronds firm, caudate ; central 

 pinnae about Jin. long, oblong, obtuse, sori one-serial, six to ten 

 jugate. New Caledonia. 



D. m. Kuntnlana (Kunth's). fronds moderately firm ; central 

 pinnae close, bluntish, sharply toothed, sori one-serial. Sand- 

 wich Islands. 



DOODIA (of Roxburgh). A synonym of Uraria. 

 DOOM PALM. See Hyphame thebaica. 

 DORCOCERAS. A synonym of Bsea. 

 DOREMA (from dorema, a gift ; in reference to its 

 production of gum ammoniac). OED. Umbelliferce. A 

 genus containing two species of hardy herbaceous peren- 

 nials, natives of Persia and Beloochistan. They are of 

 easy culture in ordinary garden soil. Increased by seeds. 

 D. Ammoniacum (Ammoniac). Gum Ammoniac, fl. white ; 



umbels proliferous, racemose ; peduncles terete, woolly. June. 



I. large, petiolate, somewhat bipinnate, 2ft. long ; lower leaflets 



distinct; superior ones confluent, deeply pinnatifid. A. 7ft. 



Persia, 1831. (B. M. PI. 130.) 



DORONICUM (from Doronigi, the Arabic name). 

 Leopard's Bane. Including Aronicum. OKD. Composite. 

 A genus of about a dozen species of mostly dwarf, early- 

 flowering, hardy herbaceous perennials, natives of Europe 

 and temperate Asia. Flower-heads yellow ; involucral 

 bracts in two or three series, nearly equal ; disk-florets 

 perfect, pappus hairs in many series ; ray usually female 

 only, destitute of pappus, or with from one to three hairs. 

 Leaves alternate; radical ones petioled; cauline ones 

 distant, often amplexicaul. They are of very easy culture 

 in ordinary garden soil. Propagated by divisions. 

 D. altaicum (Altaic).* fl.-heads yellow. July. I. toothed, ob- 



ovate, amplexicaul ; radical ones obovate-spathulate, narrowed 



into the stalk. A. 1ft. Siberia, 1783. 

 D. austriacum (Austrian).* fl.-heads yellow, large ; steins one to 



five-flowered. Spring. 1. dentate ; radical ones cordate, stalked ; 



lower stem ones ovate-spathulate, abruptly narrowed at the 



base ; upper ones lanceolate, cordate-amplexicaul. A. 1ft. to lift. 



Europe, 1816. Plant somewhat hairy. 



