DAHLIA— DENTARIA. 



97 



1)AH"LTA. 17—2. (Corymhifera;.) [From Dahl, 

 a Swedish botanist, and pupil oT I nnreus.] 

 svpci^'Jlua, root tuberous, leiv is broad- 

 lanceolate, serrate; 4-6 feet hi; • . Varie- 

 ties are nnmerous, exhibiting si '• adiil and 

 brilliant colors. IBlossoms in ■ uinin. A 

 native of Mexico. 



frustra'nia, [v. Oc. 14..) rav. ..arren: pe- 

 tiole wingless; leafets rouy li beneath. 

 6 f. Moxico. Var. cocciii"ea sjarlet dai- 

 ly,) racliis of leaves winged; leaflets, 

 ovate, acuminate, serrate, shining, and 

 smooth beneath ; outer calyx reilexed. 

 "Var. auraii"tia, (orange daily,) rachis of 

 leaves naked; leafets ovate-acuminate, 

 serrate, roughish beneath ; outer calyx 

 spreading. Var. luftea, (yellow daily.) 

 leaves pinnate, leafets linear, pinnatilid 

 toothed. Excel" sa, the most remarkable of 

 the new species. It is a tree Dahlia, and 

 is said to grow in Mexico thirty feet 

 high, 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 obcvate, pilose beneath. 



laxiflo'ra, has white flowers upon paui- 

 cled spikes. 



alQpecuroi'des, has blue flowers upon 

 crowded spikeo, 



jormo'sn, is a woody, branching plant, 

 with purple flowers. This species 

 furnishes greenhouse shrubs with pin- 

 nate leaves and papilionaceous flow- 

 ers. 



DALIBAR"DA. 11—12. {Rosacea.) [In honor 



of M. Dalibard.] 



fragaroi'des, (dry strawbeny, y. M. l^-.) 

 leaves ternate ; leafets w^edge-form, gasli- 

 serrate, ciliate ; peduncles many-flowered ; 

 tube of the calyx obconic. 5-8 i. 



re' pens, stem cieeping ; leaves simple, 

 cordate, crenate ; stipules linear, setaceous; 

 peduncles 1-flowered ; calyx reflexed, 

 smooth without. Mountains. Flowers 

 white, on long peduncles. 



DANTIIO'NIA. 3—2. {Graminea.) [Named 

 in honor of M. Dantiioin. a French botanist.] 

 spica'ta, (Ju. 2X-) panicle simple, appress- 



ed ; snikelets 7-9, about 7-flowered ; lower 

 • palea hairy; leaves subulate ; lower sheaths 



hairy at the throat. 



DAPH"NE. 8—1. \ThymeUx.) [From the 



nymph Daphne.] 



meze'reuvi, (mezereon, M. ^.) flowers 

 sessile, cauline, in threes ; leaves lanceolate. 



odvfra, (sweet mezereon, w. Ap. >).) 

 flowers small, in terminal heads; leaves 

 scattered, lance-oblong, glabrous. 



DARLINGTO'NIA. 15-10. {Le^uminosm.) 

 [Named aaer Dr. W. Darlington of Penn.] 

 infennr.'dui, [U.) glabrous, herbaceous, 

 unarmed; leaves 8 or 9 pairs; leafets 20 to 

 24 pairs, oblong-liuoar, witli glands between 

 the lower leaves ; little hea<is solitary, pe- 

 duncled, axillary. ; legumes falcate. 

 •)AT1S"CA. 20—12. {U) ticca,) 

 hir^'ta, (faisp hemp, y. "^4..) etem hirsute; 



leaves pinnate ; leafets running together at 

 the base. Flowers small, panicled. 

 DATU'RA. 5—1. (Solanece.) 



stramo'niiim, (thoni apple, w-p. Au. ^.) 

 pericarps spinose, erect, ovate ; leaves ovate 

 glabrous, angulai'-dentate. 



arho'rea, (great Peruvian datura, w. Oct.) 

 flowers pentangular, about one foot in 

 length, fragrant. Ex. 



tatf'uLa, (purple thorm apple, b. Ju. %) 

 pericarps spinose, erect, ovate ; leaves cor- 

 date, glabrous, toothed. Stem reddish. 



mc'lcl,{\v. J. 0.) leaves cordate, nearly 

 entire, pubescent; pericarps prickly, glo 

 hose, nodding. 

 DAU'CUS. 5-2. (UmbelKfera.) 



caro'ta, (carrot, w. J. $ .) seeds hispid; 

 petioles nerved underside ; divisions of the 

 leafets narrow-lineai", acute. 2-3 f. 

 DECO'DON. 11—1. (Salicarim.) 



vcrticilla' turn, (s%vamp willow-herb, p. 

 Aug. 2^.) leaves oppo.site, alternate, some- 

 times in threes, lanceolate, petiolated ; flow- 

 ers axillary, whorled; petals undulate ; stem 

 erect, pubescent. 2-3 f. Swamps. 

 DECUMA'RIA. 11—1. {Myrti.) 



harha'ra, (w. Ju.) leaves ovate-oblong, 

 acute at each eiid, slightly serrate. 

 DELPHIN"1UM. 12—2. {Ranunculacea.) [From 



deJphmos, the dolphin, from the resemblance 



of the tlower to a dolphin's head.] 



azu' renin, (M. Z/) petioles a little dilated 

 at the base ; leaves 3-5 parted, many cleft, 

 lobes linear ; raceme erect ; petals dense- 

 ly bearded at the apex; flowers on short 

 pedicels. 



exalta'tum, (b. Ju. 11) 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, 



tricor"nc, (b-w. M. 2_f.) petiole scarcely 

 dilated at the base, glabrous ; leaves 5-part- 

 ed ; divisions 3-5 cleft, segments linear ; 

 nectary shorter than the corol ; carpels 

 arched, expanding from the base 8-12 i. S. 



co7isol"idum, (larkspur, p. Ju. 0.) necta- 

 ries 1-leafed ; stem sub-divided. Ex. 



ela'tum., (bee-larkspur, 2^.) 6 f. A native 

 of Siberia. 



aja'cis, (rocket larkspur, b. An. 0.) nec- 

 tary 1-leafed, stem simple. 1 f. Ex. 

 DENDROM"ECON, 12—2. {Papavcracea.) 



ri'gidiim, (y. Tp.) glabrous, branching; 

 leaves rigid and coriaceous, articulated 

 with the stem, lanceolate or oblong, cuspi- 

 date, acuminate, strongly reticulate, den- 

 ticulate on the margin ; peduncles axillary, 

 l-flo\vered; flowers large; a shrub. Cali- 

 fornia. Poppy-tree. 

 DENTA'RIA 14—2. {Crucifera.) [Either 



from dens, a tooth, because its root is den- 

 tate ; or from its supposed virtue in curing 



the toothache.] 



diphyV'la, (tooth-root. w. M. 2^.) stom 2- 

 leavcd ; leafets ternate, .sub ovate, unequal- 

 ly and incisely dentate; root toothed. 6 8i. 



hichda'ta, (w. M. 2^.) leaves in thrcea, 

 ternate; leafcts 3-partcd, segments oblong, 

 gash-toothed ; root tuberous, moniliform 8 L 



