78 
ARUM—ASCYRUM. 
absynth"ium , (wormwood, 'll-.) stem branching, panicled ; leaves hoary; radi¬ 
cal ones triply pinnatifid; divisions lanceolate, toothed, obtuse; cauline 
ones 2-pinnatifid or pinnatifid; divisions lanceolate, acutish; floral ones 
undivided, lanceolate. Naturalized in most mountain districts of New 
England. 
abrota'num , (southern-wood, 'll-, and T?.) stem straight; lower leaves bipin- 
nate; upper ones hair-form, pinnate ; calyx pubescent, hemispheric. Ex. 
ARUM. 19—12. < Aroidecb .) [From jaron , a Hebrew word, signifying a dart, in allusion to the 
shape of the leaves.] 
triph/yl"lum , (Indian turnip, wild turnip, wakerobin, p. g. and w. M. 'll-.) sub- 
caulescent; leaves ternate; leafets ovate, acuminate, spadix club-form; 
spatha ovate, acuminate, peduncled with the lamina as long as the spadix. 
One variety, virens, has a green spatha; another, atropurpureum , has a 
dark purple spatha ; another, album, has a white spatha. 1-3 f. 
dracon"tium , (Ju. %.) stemless; leaves pedate ; leafets lanceolate-oblong,.en¬ 
tire ; spadix subulate, longer than the oblong, convolute spatha. Banks of 
streams. Green dragon. 
quina'tum , stemless ; leaves quin ate, lanceolate, acuminate. S. 
ARUNDO. 3—2. (Gi 'amineai.') [Latin, signifying reed.] 
canaden"sis , (Au. Tj.) panicle oblong, loose; glumes scabrous, pubescent, as 
long as the corolla; corolla awned on the back; hairs at the base equal¬ 
ling the valves; culm and leaves smooth. 3-4 f. 
ASARUM. 18—12. (Aristolochicn.) [From a, not, sairo, to adorn, this flower not being admitted 
into the ancient, coronal wreaths.] 
canaden'se , (white snake-root, wild-ginger, g-p. M. 'll-.) leaves broad-reniform, 
in pairs; calyx woolly, deeply 3-parted; the segments sub-lanceolate, re¬ 
flexed. 
ASCLEPTAS. 18—5. ( Apocynece .) [Supposed to have been named in honour of the founder 
of medical science, JEsculapius, or as he is sometimes called in mythology, Asclepois.] 
A. Leaves opposite. 
syri'aca, (common milkweed, w-p. Ju. 7}..) stem very simple; leaves lanceo¬ 
late-oblong, gradually acute, downy beneath; umbels sub-nodding, downy, 
3 to 5 feet high; flowers in large, close clusters, sweet-scented. 3-5 f. 
incarna'ta , (r. Ju. 'll-.) stem erect, branching above, downy ; leaves lanceolate, 
sub-downy both sides; umbels mostly double at their origin ; the little horn 
of the nectary exsert. A variety, pulchra , is more hairy. Yar. glabra , 
almost glabrous. Yar. olba , has white flowers. Damp. 3 f. 
obtusifo'lia , (J. 'll-.) stem single, erect; leaves clasping, oblong-obtuse, undu¬ 
late on the margin, very smooth glands beneath ; umbel terminal, long pe¬ 
duncled ; horns of the nectary exsert. Stem 3 f. Leaves much waved on 
the margin. Flowers large, pale purple. 
phytolaco'ides, (Ju. 'll-.) stem erect, simple; leaves broad-lanceolate, acuminate, 
smooth, pale beneath ; umbels many-flowered, lateral and terminal, solita¬ 
ry, on long peduncles, nodding; nectary 2-toothed. Wet, rocky grounds. 
Flowers large, greenish purple. 3 f. 
quadrifo'lia , (w. p-w. M. 'll-) stem erect, simple, glabrous; leaves ovate, acu¬ 
minate, petioled; those in the middle of the stem are largest, and in fours; 
umbels 2, terminal, lax-flowered; pedicels filiform. About 18 inches high. 
Fowers small and sweet-scented. 
B. Leaves not opposite. 
verticilla'ta , (dwarf milkweed, g-y. w. Ju. 94-) stem erect, very simple, mark¬ 
ed with lines, and small pubescence ; leaves very narrow-linear, straight, 
glabrous, whorled, scattered; horn in the nectary exsert. 2 f. 
tuberq'sa, (Ju. 'll-.) stem erect, hairy, with spreading branches; nectary with¬ 
out horns ; leaves oblong-lanceolate, sessile, alternate, somewhat crowded ; 
umbels numerous, forming terminal corymbs. Sandy fields. Flowers 
large, bright orange, in numerous, erect umbels. Medicinal. Pleurisy- 
root, butterfly-weed. 
ASCYRUM. 12—3. ( Hyperlca .) [From a, without, slcuros , roughness.] 
zrux-andre'a, (y. Ju. k.) stems numerous; sufruticose, terete, with erect 
branches; leaves ovate-linear, obtuse; inner petals sub-orbicular; pedicels 
