DRACAENA 227 



with upper and lower sides differing in structure, leaves, creeping 

 shoot, many fl., e.g. Aconitum, Delphinium. Labiatae, Legitminosae, 

 Orchidaceae. Cf. esp. Podostemaceae, and see Boraginaceae. 



Dorstenia Plum, ex L. Moraceae (i). 80 trop. Herbs or shrubs 

 with peculiar cymose infl. The common recept. of the fls. is a flat 

 or hollowed fleshy structure, often > an inch wide. Fls. unisexual, 

 sometimes all of one sex on one receptacle, sometimes intermingled 

 with several <? round one ?, sunk in the receptacle round whose edge 

 project a number of bracts. P-segments completely united. Sta. in 

 the $ usu. 2. The fr. when ripe is shot out of the receptacle; the 

 latter becomes very turgid and presses on the fr. and at length ejects 

 it as one might fillip away a bit of soap between finger and thumb. 



Dortmanna L.= Lobelia L. (Campan.). 



Doryalis (Dovyalis} E. Mey. Flacourtiaceae (4). 15 Afr., Ceylon. 

 Some (ff. Aberia) have ed. fr. 



Doryantlies Correa. Amaryllidaceae (n). 3 Austr. 



Dorycnium L. Leguminosae (in. 5). 10 Medit. 



Doryopteris ]. Sm. Polypodiaceae. 45 trop. and subtrop. 



Doryphora Endl. Monimiaceae. i New S. Wales. 



Dorystephania Warb. Asclepiadaceae (u. 3). i Phil. Is. 



Dorystoechas Boiss. et Heldr. Labiatae (vi). i W. As. 



Dossinia C. Morr. Orchidaceae (n. 2). i Borneo, cult. orn. 1. under 

 the name Anoectochilus Lowii Hort. 



Dossinimaria x Rolfe. Orchidaceae. Hybrid of last and Haemaria. 



Douarrea Montr. Inc. sed. 2 New Caled. 



Double coconut, Lodoicea Sechellamm Labil. ; -flower, fl. with sta. 

 changed to petals (in Compositae, with disc fl. changed to ray fl.); 

 -needles, cf. Coniferae. 



Douglas fir, Pseudotsuga Donglasii Carr. 



Douglasia Lindl. Primul. (i). 3 arct. N. Am., i S. Eur. (alpine). 



Doum palm, Hyphaene. 



Dove-orchid, Peristeria elata Hook.; -wood (VV.I. ), Alchornea. 



Dovea Kunth. Restionaceae. to S. Afr. Used for thatch. 



Dovyalis (Doryalis} E. Mey. Flacourtiaceae (4). 15 Afr., Madag., 

 Ceylon. Cf. Aberia. 



Downingia Torr. (inch Clintonia Dougl.). Campanul. (in). 3 Pac. 

 Am. D. pidchdla Torr. has no twisting of the floral axis, or not 

 >90. 



Down tree (W.I.), Ochroma Lagopus Sw. 



Downy, covered with fine soft hairs. 



Doxantha Miers (Bignonia p.p. BH.}. Bignon. (i). i U.S. 



Doyerea Grosourdy ex Bello (Corallocarpus p.p. EP.). Cucurbitaceae 

 (2) (Myrtaceae BH.). 2 W.I., Venezuela. 



Draba Dill, ex L. Cruciferae (4). 150 N. temp, and arctic, and 

 south-west. N. Am.; 5 in Brit, (whitlow-grass), incl. D. verna L. 

 which occurs in Eur. in a vast number of vars. which breed true, 

 and were distinguished as sp. by Jordan (cf. works on Mendelism). 

 Most are tufted, xero. with hairy or fleshy 1. 



Dracaena Vand. Liliaceae (vi). 40 Old World trop. Mostly trees, 

 whose stems branch and grow in thickness (extra-fascicular cambium). 

 The famous dragon-tree of Teneriffe (D. Draco L.), blown down in 



