82 
BETULA— BIIIZA. 
BE'TULA. 19—12. [Amentacea;.) [Latin, 
birch ] 
populifo Ha, (white birch, poplar birch, 
Ju. ^.) leaves deltoid, long-acuminate, une- 
qually serrate, very glabrous; scales of the 
strobile with rounded, lateral lobes; peti- 
oles glabrous. .30-40 f 
papyrrr'cea, (paper birch, Ip .) leaves ovate, 
acummate, doubly seirate ; veins hir-sute 
beneath ; petiole glabrous ; pi.stillate ament 
peduncled, nodding; scales with lateral, 
short, sub-orbicnlar lobes. The bark u.sed 
by the Indians for canoes. 
len"ta, (black birch, M. I7 .) leaves heart- 
ovate, sharp-serrate, acuminate ; nerves and 
petioles pilose beneath ; .scales of the stro- 
bile glabrous, with obtu.se, equal lobes, hav- 
ing elevated veins. Wood resembles ma- 
hogany. Very sweet-scented. 80 {. 
glandnlo' sa, (scrub birch, M. .) branches 
glandular-dotted, glabrous ; leaves obovate, 
serrate, at the base entire, glabrous, sub- 
sessile ; pistillate ament oblong, .scales half 
3 -cleft; fruit orbicular, with a naiTow mar- 
gin. 2-8 f 
pu'mila, (dwarf birch, J. '^.) branches 
pubescent, dotted ; leaves orbicular-obovate, 
{)etioled, dense-pubescent beneath, pLstil- 
ate ament cylindric. 2-3 f. 
BI'DENS. 17-3. (Corymhiferce.) [From ftis, 
two, and dens, tooth.] 
cer"nua,[Y- Au. @. water beggar-ticks,) 
flowers sub-radiate, ceniuous; outer invo- 
lucre as long as the flower ; leaves lanceo- 
late, sub-connate, dentate. Ponds and 
ditches. 1-2 f 
chrysanthemoi'des, (dai.sy beggar-ticks, 
Au. @.) flowers rayed, drooping rays 
erect, longer than the sub-equal involucre ; 
leaves oblong, tapering both end.s, toothed, 
connate ; flowers large. 
hipin"na'ta, (hemlock beggar-ticks, y. 
Ju. %) flowers sub-rayed ; outer involucre 
of the length of the inner; leaves doubly 
pinnate, leafets lanceolate, pinnatifid. 
BIGNO'NIA. 13-2. (PolenwmiE.) [In honor 
of the Abbe liignon.] 
rndi'cans, (trumpet flower, r. and y. Ju. 
Tp.) leaves pinnate, leafets ovate, toothed, 
acuminate ; corymb terminal ; tube of the 
corolla thrice as long as the calyx ; stem 
rooting. Most beautiful climbing shrub. 
One variety, j?a?n''mfa, has yellowish scarlet 
flowers; another variety, coccin"ea, has 
bright scarlet flowers. Cultivated. 
cnicifera, (y. r. J. Ip .) leaves conjugate, 
cirrose ; lower ones ternate ; leafets heart- 
ovate, acuminate ; racemes axillary ; stem 
muricate. 
BLI'TUM. 1—2. (Airipliccs.) [From the 
Greek bliton, an insipid pot-herb.] 
capita' turn, (strawbeiry blite, r. J. @.) 
heads in a terminal spike, not intermixed 
with leaves ; leaves triangular, toothed. 
15 i. 
mariti'mum, (Aug. stem erect; peri- 
anth membranaceous ; clusters axillary, 
spiked, naked ; leaves lanceolate, tapering 
to each end, gash-toothed. Salt marshes. 
1-2 f 
virga'tuin, (slender blite, r. J. late- 
ral heads scattered, top ones leafy ; leaves 
triangular-toothed. 
BOERHAA'VTA. 3—1. (Ni/ctagines.) [In 
honor of Boerhaave, the celebrated physician.] 
erec"ta, (w. p. J. 24 .) stem columnar, tri- 
chotomous, rough below, smooth above ; 
flowers in corymb-panicles. S. 
BOLE'TUS. 21—6. (Fungi.) [From ftoZos, a 
mass.] 
ignia rius, dilated, smooth, cuticle in 
ridges ; pileus hard, becoming dark at the 
base, at the margin cinnamon color, beneath 
yellowish white. Grows on trunks of 
ti-ees. General form like a horse's hoof It 
is called touchwood. 
BOLTO'NIA. 17—2. (Corymhifem.) 
asteroides, (false aster, w. r. Au. 21.) 
leaves very entire ; flowers long-peduncled; 
seed oval, sub awnless, glabrous. 
glostifo'lia, (false camomile, w. Ju. 
lower leaves serrate ; flowers shoit-pedun- 
cled ; akenes obcoi-date, a])pa.rently winged, 
pubescent ; awns of the egret two, of equal 
length with each other. K,esemblesan"the- 
mis cot^ula. 
BORA'GO. 5—1. {Boriigtne<B.y [Formerly 
called CO' ago. from cor, ihe h^art, and ago, 
to affect, because it was thought to cheer 
the spirits.] 
officinfi'lis, (borage, b. Ju. 0.) leaves al- 
ternate ; calyx spreading. Ex. 
afnca'na, (@.) leaves opposite, petioled, 
ovate ; peduncle many-flowered. Ex. 
BOTRYCH"IUM. 21—1. {Filices.) [Botrus, 
a bunch of grapes, from the fructification 
resembling one.] 
fumanoi'de.'i, (grape fern, J. 2_f.) stipe 
naked ; frond smooth, radical, 3-parted, bi- 
pinnate , leafets lunate, crenate ; spikes hi- 
pinnate. 
virginf'icnm, (rattlesnake fern, Ju.) some- 
what hairy ; scape bearing the frond in the 
middle ; frond 3-parted. bipinnatifid ; divis 
ions incisely piimatifid ; segments obtuse 
about 3-toothed ; spikes decompound. 2 f 
BRAS"SICA. 14—2. (Cruciferce.) 
ra'pa, (turnip, $ .) root caulescent, orbicu 
lar, depressed, fle.shy ; radical leaves rough, 
cauline ones very entire, smooth. Var. 
mta-haga, has a turbinate, sub -fusiform 
root. Ex. 
olera'cea, (common cabbage, including all 
the varieties caused by culture, $ .) root 
caulescent, terete, fleshy ; leaves smooth, 
glaucous, repand-lobate. Ex. 
na'pns, (kale or cole, $ .) root caulescent, 
fusiform ; leaves smooth, upper ones heart- 
lanceolate, cla.sping, lower ones lyrate- 
toothed. 
BRICKEL"LIA. 17—1. (Cinerocephalce.) 
cordifo'lia, (p. Au.) involucre many-flow- 
ered ; corolla tubulai-, 5-cleft ; stamens at- 
tached to the corolla ; akenes long, hairy , 
lower leaves cordate, acuminate, dentate, 
pubescent; upper ones obtuse; receptacle 
naked and dotted. 
BRI'ZA. 3—2. (GraminecE.) [From the Greek 
britho, to nod.] 
me'dia, (quaking gras.s, rattlesnake grass, 
J. 11.) panicle erect; spikelets heart-ovate, 
about 7-flowered; calyx smaller thaii tlie 
flowers. 1 f. Probably introduced. 
