AE.ALIA— ARTEMISIA, 77 



ARALIA. 5—5. (AralicB.) [From ara, a bank in the sea, in ailuslon to the habit of the plant.] 

 racemo'^a, (spikenard, O. w. J. %.) spreading branches; petioles 3-parled, the 



partitions 3-5-leaved ; leafets often heart-form ; branchlets axillary, leafy ; 



umbels many, sub-panicled, leafless above. Damp. 4 f. 

 nudicaulis, (g-w. J. %.) stem hardly a caulis; leaf solitary, terquinate ; scape 



shorter than the leaf ; umbels few. "Wild sarsaparilla. 15 i. S. 



ARBUTUS. 10-1. {Erica.) 

 Mua-w"5i, (bear-berry, kinnikinnick, w-r. M. T2 ) stem procumbent; leaves 

 wedge-obovate, entire ; berry 5-seeded. Dry, barren sand-plains, &c. Very 

 abundant about the great lakes. 



ARCTIUM. 17—1. iCinarocephala,.) [From ar^<05, a bear, so called on account of its rough- 

 ness.] 

 lap"pa, (burdock, r. Au. %.) cauline leaves heart-form, petioled, toothed ; 

 flowers panicled, globose ; calyx smooth. 



ARENARIA. 10—3. {Caryophylleob.) [From arena, sand.] 

 laterifior"a, (sand- wort, w. J. %.) stem filiform, simple; leaves ovate, obtuse, 

 sub-triple-nerved ; peduncles lateral, solitary, elongated, 2-cleft; one pedi- 

 cel luiddle-bracted ; corolla longer than the calyx. 6-10 i. 

 glabra, {%..) very smooth ; stems numerous, erect, filiform ; leaves subulate, 

 linear, flat, spreading; pedicels 1-flowered, elongated, divaricate; sepals 

 ovate, obtuse shorter than the petals. Mountains. Flowers large, white. 

 Stem 4-6 inches, high, erect, slender. 

 ARETHUSA. 18-1. iOrchidea.) 

 bulbo'sa, (arethusa, r. J. %.) leafless ; root globose ; scape sheathed, 1-flower- 

 ed; calyx with the superior divisions incurved; lip sub-crenulate. Flow- 

 ers large, sweet-scented. Damp. 

 ARGEMONE 12—1. (Papaveracem.) 

 mcTicana, (y. Ju. ©.) leaves pinnatifid, spinose, gashed; flowers axillary. 

 Var. albiflora. S. 

 ARISTOLOCHIA. 18—6. (Aristolochia.) 

 serpenta'ria, (p. J. %.) leaves heart-form, oblong, acuminate; stem zigzag, 

 ascending; peduncles radical; lips of the corolla lanceolate. The Vir- 

 ginia snake-root. There is a variety with very long, narrow leaves. 



ARMENIACa. 11—1. (Rosacea.) [From Armenia.] 



vulga'ris, (apricot, l}.) leaves sub-cordate ; stipules palmate. Var. precox, 

 early apricot. Fruit small, yellow. Yar. persicoides, Tpea.ch apricot. Fruit 

 sub-compressed. 

 ARNICA. 17—2. (CorymbifercB.) 



nudicantis, (j. J. Ja. Tj-.) hirsute ; radical leaves opposite, decussate, broad- 

 lanceolate, nerved, and toothed; stem nearly leafless, divided near the sum- 

 mit into a few 1-flowered branches. Flowers large. 2-3 f. Pine barrens. 

 Leopard's bane. 

 ARONIA. 11—5. (RosaceiB.) [A Greek word, signifying the medlar-tree.] 



botrya'pium, (shad-bush, june-berry, w. Ap. Tj..) leaves oblong-oval, cuspidate, 

 glabrous when mature, (when first expanded, lanceolate and downy ;) flow- 

 ers racemed ; petals linear ; germs pubescent ; segments of the calyx glab- 

 rous. 



arbutifolia, unarmed ; leaves ovate-oblong, acute ; serrulate, tomentose be- 

 D^nth ; flowers in corymbs ; calyx tomentose. Low thickets. May. Shrub. 

 2-4 f. Red choke-berry. 



ova'lis, leaves roundish-elliptical, ovate, smooth ; flowers in racemes ; petals 

 obovate ; germs and segments of the calyx pubescent. Swamps. A small 

 shrub ; berries black and eatable. Medlar bush. 

 &RTE1MI -^lA.* 17—2. {CorymbifercB.) [From an ancient queen of that name.] 



pon"tica, (Roman artemisia,) leaves downy beneath ; cauline ones bipinnate ; 

 leafets linear ; branches simple ; flowers roundish, peduncled, nodding. Ex. 



• The cultivated plant often called Artemisia, belongs to the genus Chrysanthemum. 



7* 



