DIRCA-EPIDENDRUM. 
95 
DIRCA. 8—1. iThymelecb.') [From Z)iVA;(3, a fountain.] 
palus^'lris, (leather- wood, y. Ap. I^.) leaves oval, alternate, petioled, entire, 
obtuse. Shrub. 2-4 f. 
DOUECATHEON. 5—1. (LycimacMcB.') [From dodeka, twelve, and theos, a divinity.] 
vied'ia, (false cowslip, p. M. %.) leaves oblong-oval, repandly toothed ; scape 
erect, simple, smooth; umbel many-flowered; flowers nodding; bracts nu- 
merous, oval. Flowers large. 1-12 i, 
DRABA. 14—1. (^CrucifercB.) [Vvom drasso, to sneeze, from its effects upon the noses of 
those wlio eat it.] 
carolin"ia"na, stem leafy at the base, hispid, naked and smooth at the top ; 
leaves ovate, roundish, entire, hispid ; pouch linear, smooth, longer than 
the pedicel. Ap. ©. 2-4 i. w. 
DRACOCEPHALUM. 13—1. iLabiatcb.) [From drakon, dragon, kephale, head.] 
virgin'ia'num, (dragon-head, p. Au. %.) spikes long, with the flowers crowd- 
ed; bracts small, subulate; teeth of the calyx short, nearly equal; leaves 
sessile, opposite, linear-lanceolate, acutely serrate. 12 f. 
canarien"se^ (balm of Gilead,) flowers whorled; bracts lanceolate; leaves 
ternate oblong. Ex, 
DROSERA. 5 — 5. {Hypericem.) [From drosera, dewy.] 
roiundifo'lia, (sundew, y-w. Au. %.) scape simple: leaves nearly orbicular, 
narrowed at the base : petioles long, downy. Wet or damp, 4r-8 i. 
longifo'Lia, (y-w. Ju. %..) scape simple, leaves spalulate-obovate; petioles long, 
naked. 3-6 i. Swamps. 
DRYAS. 11 — 13. (Rosaceoi.) [From the Dryads, fabled wood-nymphs.] 
integrifo'lia, (vv. Ju. %.) leaves very entire, acute at the base ; peduncles 1- 
flowered. 
ECHINOPS. 17—5. (Cinarocephalce.} [From echinos, beset with prickles Uke a hedge-hog.] 
s^phceroceph^'alus, (globe thistle, b.) leaves pinnatiM; stem branching. Austria. 
. ECHIUM. 5—1. (Boraginca.) [From echis, a viper, because it was supposed to heal the stings 
of that reptile.] 
vulga're, (blue thistle, b, M. (j^.) stem tuberculate-hispid ; leaves lance-linear, 
hispid ; spikes lateral ; stamens longer than the corolla, 2-3 f, 
ELEAGNUS. 4—1. {meagni.) [From eleia, the olive.] 
argen"tea, (oleaster, J. Pj.) unarmed; leaves undulate, oval-oblong, covered 
with silvery scales; flowers aggregate, sub-solitary, nodding. Southern, 
The fruit resembles small olives. 
angustifolius, narrow-leaved oleaster. 
lalifo'lins, broad leaves, green on the upper surface, silvery beneath, 
ELEPHANTOPUS. 17—5. iCorymbifercc.) [From elephos, elephant, pons, foot] 
carolinia^nus, (elephant-foot, r. Au. I]..) radical and cauline leaves oblongj 
narrowed at the base, pilose on both sides ; stem erect, pilose, leafy. 2 f. 
ELLIOTTIA. 8—1. (EriccB.) [In honour of EUiott, author of the Southern Flora.] 
mcemo'sa, (w. J. Pj.) leaves alternate, lanceolate, jnucronate, entire, short- 
petioled, pubescent , racemes terminal. 
ELYTRARIA. 2—1. (Acanthi.) 
virgo/ta, (J. T2.) leaves entire near the summit; scales under the flower ovate, 
villose along the margin. 12-18 i. 
car"damon, famishes the cardamon seeds of commerce ; highly aromatic, Ex. 
EMPETRUM. 20—3. (Ericm.) [From the Greek en, in, and patron, a stone.] 
nigram, (M. T^ ) procumbent; branchlets glabrous; leaves imbricate, oblong- 
retuse, glabrous with a revolute margin. A low shrub, found on the White 
Hills, with small and dense ever-green foliage, like that of the heaths. 
Flowers small, red. Berries black. 
EPIDENDRUM. 18—1. COrchidece.} [From epi, upon, and dendron, tree.] 
conofsium, (air-plant, y. Au.) stem simple ; leaves lanceolate, rigid, peren- 
nial ; spikes erect ; lamina of the lip 3-lobed ; middle one retuse ; inner pe- 
tals narrow. Parasite. 
vaniV'la, climbing ; leaves ovate, oblong, sessile, cauline. The vanilla plane. 
The pericarp, which is a pod, contains aromatic seeds. Ex, 
29* 
