AJPOGON— ARENARIA. 



75 



ridged, central lobe rounded, crenulate. 

 Shady woods. Flowers pendulous. 1 f. 

 APO'GON. 17—1. (CichoracecE.) [From a, 



without, ^oo'on, beard.] 



hnmiVis, (y. Ap. ©.) ntem glabrous; rad- 

 ical leaves sessile, cauline leaves, ligulate, 

 acute, leaves entire, glabrous. 

 APOC'YNUM. 18— .5. {Apocynea.) [From 



apo. against, and kunos, a dog.] 



androsoEmifo'Unm, (dog-bane, r-w. J. 11.) 

 stem erect and branching ; leaves ovate ; 

 cymes lateral and terminal ; tube of the 

 corolla longer than the calyx, with a spread- 

 ing limb. 3 f. 



cannaVinvm, (g-y. J. 24^.) leaves lanceo- 

 late, acute at each end, smooth on both 

 sides ; cymes paniculate ; calyx a.s long as 

 the tube of the corolla. 

 APTE'RIA. 3—1. {Junci.) [From the Greek 



a, witiiout, ■pteris, wins^s.] 



seta'cen, (w. and p. ^.) stem with minute, 

 ovate, remote scales; spikes with bifid 

 branches. 6 i. S. 

 AQUILE'GIA. 12—5. (.Ranunculacecc.) [From 



the Latin agua, water, and ago, to gather, 



so called from tlie shape of its leaves, which 



retain water.] 



canaderi"sis, (wild columbine, r. y. 

 Ap. Z^.) horns straight; stamens exsert; 

 leaves decompound. Gh-owing fi-equently 

 in crevices of rock.s. 15 i. 



cterji'Iia, (b. J. 11. ) horns twice as long as 

 the petals ; nectaries acute ; segments of 

 the leaves deeply lobed. 18-1. Southern. 



vulga'ris, (garden columbine, J. 2X-) horns 

 incurved ; leafy ; stem and leaves glabrous ; 

 leaves decompound. The nectariferous 

 horns become numerous by culture ; one 

 hollow horn within another. 1.5 i. Ex. 



brevutt/'la, sub-pubescent; spur incurved, 

 shorter than the limb ; stipe short, inclined ; 

 stamens shorter than the corolla. Upper 

 Canada. 



formo'sa, (11. r.) spur straight, much 

 longer than the limb ; sepals lanceolate, 

 acute, 3 times the length of the petals ; 

 stylo as long as the sepals. Oregon. 



AR"ARIS. 14-2. iCrucifera:.) [Probably named 



in Arabia ] 



lyra'ta, (w. A. $ .) stem and upper leaves 

 smooth and glaucous ; radical leaves lyrate- 

 pimiatifid, often pilose ; stem branched at 

 the base ; pedicels much longer than the 

 calyx. 10 i. 



_ canaden'sis, (w. J. If.) stem leaves ses- 

 sile, oblong-lanceolate, narrow at the base, 

 pubescent ; pedicels pubescent, reflexed in 

 tlie fruit; siliques pendulous, sub-falcate, 

 nerved. 2 f. 



rhombo'idea, (spring cress, w. M. If.) 

 leaves glabrous, rhomboidal, repand-tooth- i 

 ed, the lower ones nearly round, on long : 

 petioles ; root tuberous. 15 i.. Wet. j 



de.ntdta, (0. w. Ap.) stellatcly pubes- ' 

 cent ; radical leaves obovate, tapering at 

 the ba.se into a petiole, as long as the limb, 

 irregularly sharp toothed; cauline ones, 

 oblong, clttsping ; flowers minute ; petals 

 spatulate, scarcely longer than the calyx ; I 

 eilique short, spreading on very naiTow j 

 pedicels, pointed with a nearly .sessile stig- I 



ma ; stem branched from the base. Arkan 

 sas. Mississippi. 



goffitla'ta, (wall-cress, w. J. 0. $ .) leaves 

 sub-dentate, rough, with the pubescena 

 often branched ; radical ones ovate or ob- 

 long, attenuated into a petiole ; stem leaves 

 lanceolate, sagittate, cordate ; pedicels as 

 long as the calyx ; siliques straight and 

 erect. 18 i. 



ARA'CHIS. 16—10 (LeguminosecB.) [A Greek 

 word, signifying a rooting plant.] 

 hypog(R'a, (pea-nut, false ground-nut, 0.) 

 stem procumbent, pilose ; leaves pinnate ; 

 flowers axillary ; peduncles become long, 

 and the fruit is ripened under ground. . 



ARA'LIA. 5—5. (Aralim.) [From ara^ a 



bank in the sea, in allusion to the habit of 



the plant] 



racevio' sa, (spikenard, w. J. Zf.) spread 

 ing branches ; petioles 3-parted, the 

 partitions 3-5-leaved ; leafets often heart- 

 form ; branchlets axillarj', leafy; umbels 

 many, sub-panicled, leafless above. Damp. 

 4 f. 



nudicau'lis, (g-w. J. 2|.) stem ha-dly a 

 caulis; leaf solitary, terquinate ; scape short- 

 er than the leaf; umbels few. Wild sar- 

 saparilla. 15 i. S. 



spino'sa fshot-busb, angelica tree, w. y 

 w. Au. Tp.) stem and leaves thorny; 

 leaves doubly pinnate ; leafets slightly 

 sen-ate ; panicles branching ; umbels nu 

 merous. 

 ARBU'TUS. 10—1. {Eric(B.) 



uva-ur"si, ^bear-berry, kinnikinnick, w-r. 

 M. ^ .) stem pi-ocumbent ; leaves wedge- 

 obovate, entire ; berry 5-seedcd. Dry, 

 baiTcn sand-plains, &c. Very abundant 

 about the great lakes. 



alpi'na, (strawberry-tree, w. M. ^ .) stem 

 procumbent; leaves obovate, acute, rugObe, 

 serrate ; racemes terminal. Canada. 

 ARCHEMO'RA. 5—2. (UmheUifera.) [From 



arc/ie, tiie conqueror, moras, a fool, from poi 



soning those who eat it.] 



ambig-'ua or Tigid"a, (water drop-wort, 

 w. Au. If.) leaves gash-pinnate, 3-5 pairs, 

 acute, leafets lance-linear, often falcate and 

 mostly entire ; fruit ovate ; stem smooth. 

 3-5 f 



ARCTIUM. 17—1. (CinarocephalcE) [From 

 arktos, a bear, so called on account of its 

 roughness.] 



lap" pa, (burdock, r. Au. 11) cauline 

 leaves heart-form, petioled, toothed ; flow- 

 ers panicled, globose ; calyx smooth. 



ARENA'RIA. 10—3. (CaryophyUca:.) [From 



arena, sand.] 



latcrijlor" a, (sand- wort, w. J. 2/.) stem 

 filiform, simple ; leaves ovate, obtuse, sub- 

 triple-nerved ; peduncles lateral, solitary, 

 elongated, 2-cleft ; pedicels alternately brac- 

 ted ; corolla longer than the caly.x. 6-10 i. 



gla'hra, (2J[.) very smooth ; stem.'' numer- 

 ous, erect, hlilbrm; leaves subulate, linear, 

 flat, spreading; pedicels 1-flowered, elon- 

 gated, divaricate; sepals ovate, obtuse, 

 shorter than the petals. Mountains. Flow- 

 ers large, white. Stem 4-6 i. erect, slen- 

 der. 



scrpijUifo'lia, (tliyme-leaved sand-wort 



