DAHLIA— DENT ARIA. 
97 
DATF'LTA. 17—2. {CorymUfercB.) [From Dahl, 
a Swedish botanist, and pupil of Liririceus.] 
super-^Jiua, root tubeious, leaves broad- 
lanceolate, serrate ; 4-6 feet high. Varie- 
ties are numerous, exhibiting splendid and 
brilliant colors. Blossoms in autumn. A 
native of Mexico. 
frustra'nia, (r. Oc. 2^.) rays barren: pe- 
tiole wingless; leafets roughish beneath. 
6 f. Mexico. Var. coccin"ea, (scarlet dai- 
ly,) rachis of leaves w^inged; leaflets, 
ovate, acuminate, serrate, shining, and 
smooth beneath; outer calyx reflexed, 
Var. auran"tia, (orange daily,) rachis of 
leaves naked ; leafets ovate-acuminate, 
Berrate, roughish beneath; outer calyx 
spreading. Var. lu'tea, (yellow daily.) 
leaves pinnate, leafets linear, pinnatifid 
toothed. ExceV'sa, the most remarkable of 
the new species. It is a tree Dahlia, and 
is said to grow in Mibcico thirty feet 
liigh, with a trunk thick in proportion. 
DA'LEA. 16—10. {Leguminosce.) [In honor of 
Dr. Dale, who wrote on medicine about the 
year 1700.] 
aure'a, (y. 2^.) erect ; spikes dense, cylin- 
dric ; bracts as large as the calyx ; calyx 
villose ; leafets obovate, pilose beneath. 
laxijio'ra, has white flowers upon pani- 
cled spikes. 
alopexuroi'des, has blue flowers upon 
crowded spikes. 
jorvto'na, is a woody, branching plant, 
with purple flowers. This species 
furnishes green-house shrubs with pin- 
nate leaves and papilionaceous flow- 
ers. 
DALIBAR"DA. 11—12. (^Rosacea.) [In honor 
of M. Dalibard.] 
fragaroi'des, (dry strawberry, y. M. 11 •) 
leaves ternate ; leafets wedge-form, gash- 
serrate, ciliate ; peduncles many-flowered; 
tube of the calyx obconic. 5-8 i. 
re'pens, stem creeping ; leaves simple, 
cordate, crenate ; stipules linear, setaceous; 
peduncles 1-flowered ; calyx reflexed, 
smooth without. Mountains. Flowers 
white, on long peduncles. 
DANTHO'NIA. 3—2. {Graminea.) [Named 
in honor of M. Danthoin, a French botanist.] 
spica'ta, (Ju. 24^.) panicle simple, appress- 
ed ; spikelets 7-9, about 7-flowered ; lower 
palea hairy; leaves subulate ; lower sheaths 
hairy at the throat. 
DAPH"NE. 8—1. (Thymelece.) [From the 
nymph Daphne.] 
rneze'reum, (mezereon, M. '^).) flowers 
eessile, cauline, in threes ; leaves lanceolate. 
odo'ra, (sweet mezereon, w. Ap. ^.) 
flowers small, in terminal heads; leaves 
scattered, lance-oblong, glabrous. 
DARLINGTO'NIA. 1.5—10. (Le^uminoscE.) 
[Named after Dr. W. Darlington of Penn.] 
interme' dia, (11.) glabrous, herbaceous, 
unarmed; leaves 8 or 9 pairs; leafets 20 to 
24 pairs, oblong-linear, with glands between 
the lower leaves ; little heads sohtary, pe- 
duncled, axillary ; legumes falcate. 
')ATIS''CA. 20—12. (UrticecB.) 
kir"ta, (falsp l\emp, y. 2^.) titem hirsute; 
leaves pinnate ; leafets running together at 
the base. Flowers small, panicled. 
DaTU'RA. 5—1. {Solanem.) 
strarno' Ilium, (thovti apple, w p. Au. ^.) 
pericarps spinose, erect, ovate ; leaves ovate, 
glabrous, angular-dentate. 
arho'rea, (great Peruvian datura, w. Oct.) 
flowers pentangular, about one foot in 
length, fragrant. Ex. 
tuf'ula, (purple thorn apple, b. Ju. 
pericarps spinose, erect, ovate ; leaves cor- 
date, glabrous, toothed. Stem reddi.sh. 
me'tel,(w. J. @.) leaves cordate, nearly 
entire, pubescent; pericarps prickly, glo 
bose, nodding. 
DAU'CUS. 5—2. (UmbcllifercE.) 
caro'ta, (carrot, w. J. $ .) seeds hispid; 
petioles nerved underside; divisions of the 
leafets narrow-linear, acute. 2-3 f. 
DECO'DON. 11—1 (Salicarice.) 
verticilla'tmn, (swamp willow-herb, p. 
Aug. 11) leaves oppo.site, alternate, some- 
times in threes, lanceolate, petiolated ; flow- 
ers axillary, whorled; petals undulate ; stem 
erect, pubescent. 2-3 f. Swamps. 
DEt:UMA'RlA. 11— 1. {Myrti.) 
barha'ra, (w. Ju.) leaves ovate-oblong, 
acute at each end, slightly serrate. 
DELPHIN"1U.VI. 12-2. (Ranunculncea.) [From 
delphinos, the dolphin, from the resemblance 
of the flower to ado phin's head.] 
azu'reum, (M. 2^.) petioles a little dilated 
at the base ; leaves 3-5 parted, many clett, 
lobes linear; raceme erect; petals dense- 
ly bearded at the apex; flowers on short 
pedicels. 
exalta'tum, (b. Ju. 2^.) petioles not dila- 
ted at the base ; leaves flat, 3-7 cleft beyond 
the middle ; lobes cuneate, 3-cleft at the 
apex, acuminate ; lateral ones often 2-lo- 
bed ; raceme erect ; spur straight, about as 
long as the calyx ; capsules 3. 
tricot-" ne, (b-w. M. li) petiole scarcely 
dilated at the base, glabrous ; leaves 5-part- 
ed ; divisions 3-5 cleft, segments linear ; 
nectary shorter than the corol ; carpela 
arched, expanding from the base 8-12 i. 
consoVidum, (larkspur, p. Ju. @.) necta- 
ries 1-leafed ; stem sub divided. Ex. 
ela'txim, (bee-larkspur, 24-) 6 f. A native 
of Siberia. 
aja'cis, (rocket larkspur, b. Au. ^.) nec- 
tary 1-leafed, stem simple. 1 f. Ex. 
DENDROM"ECON. 12—2. {Papavcracea.) 
ri'gidum, (y. ^.) glabrous, branching; 
leaves rigid and coriaceous, articulated 
with the stem, lanceolate or oblong, cu.'^pi- 
date, acuminate, strongly reticulate, den- 
ticulate on the margin ; peduncles axillary, 
1-flowered; flowers large; a shrub. Cali- 
fornia. Poppy-tree. 
DENTA'RIA 14—2. (Cntcifercc.) [Either 
from dens, a tooth, because its root is den- 
tate ; or from its supposed virtue in curing 
the toothache.] 
diphyVla, (tooth-root, w. M. 11.) stem 2- 
! leaved ; leafets ternate, sub ovate, unequal- 
i ly and incisely dentate ; root toothed. 6-8 i, 
lacinia'ta, (w. M. 24!.) leaves in threes, 
ternate; leafets 3-parted, segments oblong, 
gash-toothed; root tuberous, moniliform. 8 i. 
