74 ALYSSUM—AMYRIS. 
ALYSSTTM. 14—1. (Crucifer a .) [From the Greek alluso, mad; this plant being formerly 
supposed to be a cure for the bite of a mad dog.] 
hyperbo'reum, stem herbaceous; leaves hoary, toothed ; stamens 4 , 2 -forked. 
saxati"le , (y. 1 - 2 .) gold basket. Flowers in panicles, leaves lanceolate, soft, 
retuse. Ex. 
AMARANTHUS. 19—5. ( Amaranthi .) [Signifying not withering.] 
albus, (white coxcomb, g-w. Ju. 0.) glomerules axillary, triandrous; leaves 
obovate, retuse ; stem 4-cornered, simple. Common garden weed. 
melanchol'icus , (love lies bleeding, r. <v>.) glomerules axillary, peduncled, 
roundish ; leaves lance-ovate, coloured. Ex. 
tri-colour, glomerules sessile, leaves lance-oblong, coloured. Ex. 
livid"us, glomerules triandrous, sub-spiked roundish; leaves oval, retuse; 
stem erect. Ex. 
AMARYLLIS. 6—1. (Narcissi.) 
atamas"co, (atamasco lily, w. and r. J. 2 )..) spatha 2-cleft, acute ; flower pedi- 
celled ; corolla bell-form, sub-equal, erect; stamens declined. S. 
formosis"sima, (jacobea. 2 )..) spatha 1 -flowered; corolla ringent-like; petals 
declined. Ex. 
undula'ta , (waved lily, Sept.) The flowers numerous on each stalk; petals 
pink, undulate. Ex. 
AMBROSIA. 19—4. (Urticea.) [The name ambrosia, food for the gods, seems strangely mis¬ 
applied to a genus of plants possessing neither beauty nor valuable properties.] 
elati'or, (hog-weed, S. <?>.) leaves doubly pinnatifid, smoothish ; petioles long, 
ciliated; racemes terminal, panicled ; stem wand-like. 
triji'da, (g. y. S.) hirsute, rough; leaves very large, 3-lobed, serrate ; the 
lobes oval-lanceolate, acuminate ; fruit 6 -spined below the summit. Flow¬ 
ers in terminal panicles composed of long axillary spikes. 5 to 8 f. 
AMORPHA. 16—10. (Leguminoscc.) [From the Greek a, wanting, morphe, shape.] 
frutico'sa, (Ju. T 7 .) smooth, sub-arborescent; leaves petioled, emarginate ; 
spikes aggregated, long; calyx hoary, pedicelled, one of the teeth acumi¬ 
nate, the rest obtuse;. legume few-seeded. N. J. to Car. and W. to Rocky 
Mountains. A shrub with spikes of purple flowers. 
pubes'cens, (w. J. > 2 *) small, shrubby; leaves on very short petioles, obtuse at 
each end, hairy; spike long, panicled, hairy; calyx sub-sessile, with acu¬ 
minate teeth. 3 f. 
AMPELOPSIS. 5—1. ( Vites.) [From the Greek ampelosa , vine, and ops, resembling.] 
quinquefo'lia,* (g. Ju. 7]-) stem climbing and rooting; leaves quinate, digitate, 
smooth; leafets petiolate, oblong, acuminate, toothed; racemes dichoto¬ 
mous. Yar. hirsuta, leaves pubescent on both sides; leafets ovate, coarsely 
toothed. 
cor data, (Ju. T 7 .) stem climbing, with slender branches; leaves cordate, acu¬ 
minate, toothed, and angular; nerves beneath pubescent;. racemes dichoto¬ 
mous, few-flowered. Banks of streams. Panicles opposite the leaves. 
bipin 1 natea , -leaves doubly pinnate; lance-ovate, deeply toothed and lobed. 
Flowers in corymbs. Southern. 
AMPHICARPA. 16—10. (Leguminosoa.) [From the Greek amphi, about, karpos, the fruit.] 
mono'ica, (wild bean-vine, b. and w. Ju. <v}.) stem slender, twining, hairy 
backwards; leaves ternate, ovate, nearly smooth; stipules ovate, striate. 
Yar. comosa has hirsute leaves. Twining. 4 f. 
AMYGPALUS. 11—l. (Rosacecc.) [Derived from a Greek word, which signifies to lacerate, 
alluding to the furrows upon the pericarp of the almond.] 
per"sica, (peach, r. M. I 7 .) serratures of the leaves all acute, flowers sessile, 
solitary. 15 f. Ex. 
na'na, (flowering almond, Tj.) leaves ovate, tapering to the base, sharply ser¬ 
rate. 3 f. Ex. 
com'munis , (almond,) leaves serrate, the lower ones glandular; flowers ses¬ 
sile, binate. Ex. 
* < 
AMYRIS. 8—1. ( Terebintacecc .) [From the Greek, signifying balm or ointment, so called 
from its use, or smell. Ex.] 
jlorida'na , (w. t?.) leaves ovate, sessile, entire, obtuse; flower sub-panicled. 
Cissus hederaceaof Mirbel. 
