DYON^A— DRYAS. 
99 
virgin"ica, smooth ; stem procambent ; 
leaves lanceolate, opposite, acute, scabrous 
on the margin ; fruit crowned by the 2lobed 
calyx ; stem smooth, slender, and purple ; 
flowers white, solitary. (24!. Sept.) 
DION^^'A. 10—1. {Hypericem.) [From Di- 
onf, one of the names of" Venus.] 
rmi.scip"nla, (Venus' fly-trap, w. 2/.) rad- 
ical leaves, with terminal, ciliate appenda- 
ges, somewhat resembling a rat-trap ; this 
is suddenly closed, on being iiTitated. S. 
DIOSCORE'A 20-6. (Asparaf^i.) [From 
Dioscorides.] 
villo'sa, (May, 2X) leaves alternate, op- 
po.site, verticillate, cordate, acuminate, pu- 
bescent beneath, 3-nerved. Woods. Stem 
climbing ; 12 feet high. Flowers small, in 
panicles. The yam-root of the Indies is 
obtained from a species of this plant. 
qunierua'ta, (J. ll) leaves verticillate by 
fours, and alternate, cordate, acuminate, 
glabrous, 7-9 nerved ; lateral nerves divi- 
ded. Stem climbing. 
DIOSPY'ROS. 20—8. (Rhndodendra.) 
virgin" in' tia, (persimmon, g-y. May, ^.) 
leaves ovate, alternate, oblong, acuminate, 
reticulately veined, nearly smooth ; petioles 
pubescent; flowers solitary, axillary; fruit 
as large as a comi^on plum, golden yellow. 
Var. pitbes"cens, leaves oblong, acute, pu- 
bescent beneath ; petioles long ; fruit bear- 
ing few seeds. S. 
DIPHYL"LIA. 6—1. (Berber ides.) [From 
dis, double, phullon, leaf.] 
cymo'sa, (w. J. 2J!.) very glabrous ; leaves 
sub-palmate, angularly lobed, serrate ; cyme 
many-flowered. 8. 
DIF'SACTJS. 4—1. (DipsacecB.) 
si/lves"tri>^, (wild teasel, w-h. Ju. ^ .) . 
leaves rarely connate, opposite ; scales of j 
the receptacle straight ; involacrum curved 
npward. 3-4 f. (S?. 
fullo'num, (teasel, w. Ju. $ .) leaves ses- 
sile, seriate ; chaff hooked. 3-6 f. 
1)IR"CA. 8—1. (Thymeleoe.) [From dirka, a 
fountain.] 
pahtii"tris, (leather-wood, y. Ap. Tp.) 
leaves oval, alternate, petioled, entire, ob- 
tuse. Shrub. 2-4 f. 
DODECATH"EON. 5—1. (Lycimachice.) [From 
dodeka, twelve, and theos, a divinity, signi- 
fying the twelve Roman divinities.] 
me dia, (false cowslip, p. M. 2.^.) leaves 
oblong oval, repandly-toothed ; scape erect, 
simple, smooth ; umbel many-flowered ; 
flowers nodding ; bracts numerous, oval. 
Flowers large. 1-12 i. 
integnfo'lium, (b. J. 2X-) leaves sub-spat- 
ulate, entire ; umbels few-flowered, straight ; 
bracts linear. 
DOpO'N.<EA. 8-1. (Sapindi.) 
visco'sa, ( ) leaves viscous, ovate- 
oblong, cuneiform at the base. Florida. 
DO'LICHOS. 16—10. {Leguminos'P,.) 
multiJlo'rKS, (p-w. H) stem twining, pu- 
bescent ; leaves orbicular, short, acuminate, 
nearly glabrous when mattire ; racemes ax- 
illaiy, densely spiked, many-Ilowered, about 
as long as the petioles. .5-10 f. Ark. G-eo. 
'pur (JUL reus, (wild cowhagc, p. 0-.) twi- , 
ning ; stem glabrous ; corolla w ith spread- 
ing wings ; petioles pubescent. 8. 
pru'riem, (cowhage, or cowitch, p. Q.) 
twining ; leaves hairy beneath ; legumes iu 
racemes; valves slightly keeled, hairy; pe- 
duncles in threes ; legumes covered with 
stinging hairs. Ex. 
Ivteo'lns, (w-y, .Ju. %.) climbing-pubes- 
cent ; leafets ovate, acuminate ; peduncles 
! longer then the leaves ; spikes .short, some- 
what capitate ; banner broad, reflexed ; 
wings rhomboidal. 4 f. S. 
DRA'BA. 14^1. (Crucifcra.) [Fvom dr as so, 
to sneeze, from its effects upon the no.^es of 
those who eat it.] 
carol? n"ia'na, stem leafy at the base, his- 
pid, naked and smooth at the top ; leaves 
ovate, roundish, entire, hispid ; pouch lin- 
ear, smooth, longer than the pedicel. (Ap. 
m- 2-4 i w.) 
arn'1>izan,>^, (M. $ .) stem leafy, somewhat 
branched, sub-pubescent; leaves lanceolate, 
acute, toothed ; silicles acuminate, with the 
permanent style. 
ver"na. (w. M. A. ©.) scapes naked , 
leaves lanceolate, somewhat toothed ; petals 
2-parted ; silicles elliptical. 
DRArOCEPII"ALUM. 13—1. (Labiatce.) [From 
drakon, dragon, kephale, head.] 
virgin/ 'ia'nn7n, (dragon-head. p. Au. TX) 
spikes loiig, with the flowers crowded ; 
bracts small, subulate ; teeth of the calyx 
short, neai-ly equal ; leaves sessile, opposite, 
linear-lanceolate, acutely serrate. 12 f. 
cana.rien"fe, (balm of Gilead,) flowers 
whorled ; bracts lanceolate ; leaves ternate- 
oblong. Ex. 
corda'tnm, (b. J. ll-) stem and petioles 
pubescent ; leaves cordate, obtu.^ely creuate, 
; somewhat hirsute above ; spikes secund ; 
! pedicels 2-bracted. S. 
parviflo'rum, (w. Ju. $ .) flowers verticil- 
late, sub-capitate ; leaves ovate-lanceolate, 
deeply serrate, petioled ; bracts foliaceous, 
ovate, ciliate, serrate ; serraturesmacronate; 
teeth of the calyx unequal, scarcely shorter 
than the coroL S. The canef^" ceri'^, graud- 
ijlo'rum, and ai(stiinfcum, are exotics, and 
have large and splendid blue flowers. 
DROSE'RA. 5—6. (Hypericece.) [From dro- 
sera, dewy.] 
rotundifo'lia, (sundew, y-w. Au. 2^.) 
scape simple ; leaves nearly orbicular, nar- 
rowed at the base ; petioles long, downy. 
Wet or damp. 4-8 i. 
longifo'lia, (y-w. Ju. 2J[.) scape simple; 
leaves spatulate-obovate ; petioles long, 
naked. 3-6 i. Swamps. 
Jilifoi-"mis, (p. J. IS-) scape sub-ramose, 
terete, glabrous ; leaves very long, filiform ; 
styles 6 to 9. 
brevifo'lin, (w. r. J. 2/ .) very small ; scape 
rooting, simple ; leaves short, wedgeform, 
scarcely petioled ; petals oval. S. 
DRY'AS. 11—12. {Rosacem.) [From the 
Dryads, fabled wood-nymphs.] 
integrifo'Ua, (w. Ju. 2^.) leaves very en- 
tire, acute at the base; peduncles 1-flowered. 
octopet"ala, (mountain avens, w. Ju. 2^.) 
leaves ovate-oblong, coarsely toothed, ru- 
gose, white-tomentose beneath ; peduncles 
I one flowered. 
