76 
ARETHUSA— ARTEMISIA. 
■w. Ja. 0.) Btem dichotomous, spreading ; 
leaves ovate, acute, subciliate ; calyx acute, 
8ub-striate ; petals shorter than the calyx. 
5 i. 
stri<^'ta., (w. M. 2^.) glabrous, erect, many 
stems ; leaves subulate-linear, erect ; pani- 
cles few-flowered ; petals much longer than 
the calyx, which is oval-lanceolate, striate. 
Dry. 6-12 i. 
peploi'des, (sea chickweed, Ju. 11 •) g^fib- 
rous ; leaves ovate or oblong, acute, fleshy ; 
fiqwers sub-solitary, short-peduncled ; di- 
visions of the calyx obtuse, exceeding the 
corolla. 8-12 i. Lower Canada. 
pitch^ri (^.) erect, slender, glabrous, 
fastigiately branched, few-flowered ; leaves 
linear-filiform, obtuse, not fascicled; pe- 
duncles slightly glandular-pubescent ; pet- 
als oblong, .'wmewhat exceeding the lan- 
ceolate, nerved sepals. Texas. Arkan- 
sas. 
ARETHU'SA. 18—1. (Orchidea.) 
bnlbo'sa, (arethusa, r. J. 24.-) leafless; 
root globose ; scape sheathed, 1-flowered ; 
calyx with the superior divisions incurved, 
lips sub-crenulate ; flowers large, sweet- 
scented. Damp, 
ARGEMO'NE. 12—1. (Paprivemrea.) 
rnexicana, (y. Ju. leaves pinnatifid, 
epinose, gashed; flowers axillary. Var. 
albiflora. S. 
ARIS"TII)A. 3—2. {GraminecR.) 
dichofoma, (beard grass, poverty grass, 
ll) cespitose; culm dichotomous; 
flowers racemose-spiked ; lateral awns very ^ 
short, intermediate ones contorted. 8-12 i, 
spic?for"m,is (Z^.) flowers crowded to- ! 
gether, somewhat spiked ; the middle awn | 
villous at the base. 3 f S. | 
gra'cilis, {11.) stem very slender; flow- [ 
ersin .spikes; spikelets few-flowered, .some- \ 
what remote, appressed ; lateral awns 
short, erect, the intermediate ones longer, 
expanding. 1 {. S. I 
tuberculo' sa, culm erect, dichotomous, 
joints tumid with small tubercles in 
the axils ; panicles rigid ; glumes keeled, 
with long subulate points; paleas stiped ; 
awns smooth, convolute. 3 f S. 
AR[STOLO'CHIA. 18—6. (Aristolochim.) 
serperda'ria, (p. J. 2^.) leaves heart- form, 
oblong, acuminate ; stem zigzag, ascending; 
peduncles radical; lips of the corolla lan- 
ceolate. Virginia snake-root. A variety 
has very long, narrow leaves. 
si'pho, (Dutchman's pipe, J. Ip) leaves 
heart-form, acute; stem twining; pedun- 
cles 1-flowered, furnished with an ovate 
bract; corolla ascending, the border 3-cleft, 
equal. A vine climbing over large trees. 
Flowers solilaiy, brown, 
torneiito'sa, (g-y,) stem twining ; leaves 
nearly round, cordate, tomento.se under- 
neath; corolla villous ; border 3-cleft, nearly 
equal. 
hdstnfta, stem fluxuo.se, simple, erect ; 
leaves somewhat cordate, ha.state, acute ; 
flowers on scapes ; hp of the corolla ovate, S. 
ARMENIA'CA. 11—1. {Rosacecc.) [From 
Armenia,] 
vulga'ris, (apricot, '^),) leaves sub-cor- 
date; stipules palmate. Var. jore'coa:, early 
apricot. Fruit small, yellow. Var, persi- 
coi'des, peach apricot. Fruit sub-com- 
pressed. 
ARNI'CA. 17—2, (CorymbifercB.) 
nudicau'lis, (y, J. Ju. 2X-) hirsute ;^ radi 
cal leaves oppo.site, decussate, broad -fance. 
olate, nerved, and toothed ; .stem nearly 
leafless, divided near the .summit into a few 
1-flowered branches. Flowers large. 2-3 
f. Pine ban-ens. Leopard's bane. 
plantagin"ea, (y. Ju. 2_f.) glabrous, 
leaves entire, glabrous both sides, acute, 
3-nerved ; radical ones lance-spatulate, ter- 
minating in a narrow petiole at the base ; 
cauline ones opposite, lanceolate, sessile ; 
stem 1-flowered. 7 i. 
Jul" gens, (y. Ju, IX) bairy ; radical leaves 
lanceolate, obtusish, tapering to the base ; 
petioles 3-nerved ; cauline leaves opposite, 
remote, linear ; stem 1-flowered. If. S. 
clay'toni, (y. Ju. ^ .) hirsute ; radical 
leaves decussately opposite, oblong ovate, 
.sub dentate; stem somewhat leafless; top 
divided into 1-flowered peduncles. 2 f. 
S. 
ARO'NIA. 11—5. (Rosaoem.) [A Greek word, 
signifying the inedlar-tree.] 
botiya'pivm, (shad-bush, june-berry, w. 
Ap. 2_f.) leaves oblong-oval, cuspidate, glab- 
rous when mature, (when first expanded 
lanceolate and downy) ; flowers racemed ; 
petals linear ; germs pubescent ; segments 
of the calyx glabrous, 
avbutijo'lia, (M. ^ .) unarmed ; leaves 
ovate-oblong, acute, serrulate, tomentoso 
beneath; flowers in corymbs; calyx tom- 
mentose. Low thickets. 2-4 f. Redchoke- 
berry. 
ova'lis, leaves roundish-elliptical, ovate, 
smooth ; flowers in racemes ; petals obo- 
vate ; germs and segments of the calyx 
pubescent. Swamps, A small shrub; ber- 
ries black and eatable. Medlar-bush. 
sanguin" ea, (bloody choke-berry, w. M- 
^.) leaves oval, obtuse at both ends, mu- 
cronate, serratures very slender; racemes 
few-flowered; calyx glabrous; petals lin- 
ear, obtuse. 3-6 f. 
ahiifo'lia, ( 1? .) smooth ; leaves roundish, 
upper part toothed, pinnately-nerved, sub- 
glaucous beneath; raceme simple, elon- 
gated. Fruit black and sweet. <S'. 
ARTEMI'SIA.* 17—2. (CorymbifercE.) [From 
an ancient queen.] 
pnn"tica, (Roman artemisia.) leaves 
downy beneath, cauline ones bipinnate ; 
leafets linear; branches simple; flowers 
roundish, peduncled, nodding. Ex. 
absinth"ium, (wormwood, 2/.) stem 
branching, panicled ; leaves hoary, radical 
ones triply pinnatifid, divisions lanceolate, 
toothed, obtu.se ; cauline ones 2-pinnatitid or 
pinnatifid, divisions lanceolate, acutish \ 
floral ones undivided, lanceolate. Natu- 
ralized in most mountain districts of New 
England. 
* The cultivated plant often called Arte 
inisia, belojigs to the genus Clu-ysanthenmm 
