BETULA— BRIZA. 
RE'TT/.'OA 19—12. (ATr.mtacea.) [Latin, 
■papnlifo lia, (white birch, poplar birch, 
in. h ■) leaves deltoid, long-acuminate, une- 
qually serrate, very glabrous; scales of the 
Btrobile with rounded, lateral lobes; peti- 
oles glabrous. 30-40 f. 
papyra'cea, (paper birch, b .) leaves ovate, 
««'ummate, doul)ly seirate ; veins hirsute 
beneath ; petiole glabrous ; pi!>.tillate ament 
peduncled, nodding; scales with lateral, 
short, sub-orbicular lobes. The bark used 
by the Indians for canoes. 
len"ta, (black birch, M. Ip .) leaves heart- 
ovate, .sharp-serrate, acuminate ; nerves and 
uetioles pilose beneath ; scales of the stro- 
bile glabrous, with obtuse, equal lobes, hav- 
ing elevated veins. Wood resembles ma- 
hogany. Very sweet-scented. 80 f. 
glandiilo'sn, (scrub birch, M. branches 
gIn.ndular-dotted, glabrous ; leaves obovate, 
serrate, at the base entire, glabrous, sub- 
ses.^^ile ; pistillate ament oblong, scales half 
3-cleft ; fruit orbicular, with a narrow mar- 
gin. 2-8 f. 
p7('mila, (dwarf birch, J. ^.) branches 
pubescent, dotted ; leaves orbicular-obovate, 
petiolcd, dense-pubescent beneath, pistil- 
late ament cylindric. 2 3 f. 
BI'DENS. 17-3. {CorymbifercE.) [FvomUs, 
two, and dens, tooth.] 
cer"nua,{y. Au. 0. water beggar-ticks,) 
flowers sub-radiate, cerauous; outer invo- 
lucre as long as the flower ; leaves lanceo- 
late, sub-connate, dentate. Ponds and 
ditches. 1-2 f. 
chri/annthemoi'des. (dai.sy beggar-ticks, 
Au. @.) flowers rayed, drooping rays 
erect, longei- than the sub-equal involucre ; 
leaves oblong, tapering both ends, 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 (PolemomcE.) (In honor 
of the Abbe Hig^non.] 
radi'cans (trumpet flower, r. and y. Ju. 
fp.) leaves pinnate, leaf "its ovate, toothed, 
acuminate; corymb terminal; tube of the 
corolla thrice as long as the calyx ; stem 
rooting. Most beautiful climbing shrub. 
One variety, ^^aw^wz^Ajhas yellowish scarlet 
flowers; another variety, coccin"ea, has 
bright scarlet flowers. Cultivated. 
cnicif'era, (y. r. J. ^.) leaves conjugate, 
cirrose ; lower ones temate ; leafets heart- 
ovate, acuminate ; racemes axillary ; stem 
muricate. 
BLI'TUM. 1—2. (AtripHccs.) [From the 
Greek bliton, an insipid pot-herb.] 
capita' turn, (strawbeny blite, r. J. 
heads in a terminal spike, not intermixed 
with leaves ; leaves triangular, toothed. 
] 5 i. 
mariti'mum, (Aug. 0.) stem erect; peri- 
anth membranaceous ; clusters axillary, 
spiked, naked ; leaves lanceolate, tai)ering 
to each end, gash-toothed. Salt marshes. 
1-2 f. 
'Vtrg%'tum, /slender blite, r. J. late- 
ral heads scattered, top ones leafy j tisaves 
triangular-toothed. 
BOERHAA'VIA. 3—1. (Ni/ctagines.) [U 
honor of Boerhaave, the celebrated physician. J 
erec"ta, (w. p. J. 2^.) stem columnar, tri- 
chotomous, rough below, smooth above; 
flowers in corymb-panicles. S. 
BOLE'TUS. 21—6. (.Fungi.) [From io^os, a 
mass.] 
iqmarins, dilated, smooth, cuticle in 
ridges ; pileus hard, becoming dark at the 
base, at the margin cinnamon color, beneath 
yellowish white. Grows on trunks of 
trees. General farm like a horse's hoof. It 
is called touchwood. 
BOLTO'NIA. 17—2 {CorymMfercn.) 
asteroidex, (false .ister, w. r. Au. 11.) 
leaves very entire ; flowers long-peduncled; 
seed oval, sub-awnless, glabrou.s. 
glaxtifo'lia, (false camomile, w. Ju. 2{.) 
lower loaves serrate ; flowers short-pedun- 
cled ; akeuesobcordate, apparently winged, 
pubescent ; awns of the egi-et two, of equal 
length with each other. Resembles an^'the- 
mis cot^ula. 
BORA'GO. 5—1. (Boraginem.) [Formerly 
called co'ogo. from cor, the hfi.irt, and ago, 
to affect, because it was thought to cheei 
the spirits.] 
ojjiciiia'lis, (borage, b. Ju. 0.) leaves ai 
temate ; calyx spreading. Ex. 
africa'na, (@.) leaves opposite, petioled. 
ovate ; peduncle many flowered. Ex. 
BOTRYCir'IUM. 21—1. (Filices.) [Botrus, 
a bunch of grapes, from the fructification 
resembling one.] 
fumarioi'des, (grape fern, J. IX.) stipe 
naked ; frond smooth, radical . 3-parted, bi 
pinnate , leafets lunate, crenate ; spikes bi 
pinnate. 
virgirt"icum, (rattlesnake fern, Ju.) some- 
what haiiy ; scape bearing the frond in the 
middle ; frond 3-parted, bipinnatifid ; divis 
ions incisely pinnatifid ; segments obtuse 
about 3-toothed ; spikes decompound. 2 f 
BRAS"SICA. 14—2. (Crucifera.) 
ra'pa, (turnip, ^ .) root caulescent, orbicu 
lar, depressed, fleshy ; radical leaves rouglii 
cauline ones very entire, smooth. Vai*. 
ruta-baga, has a turbinate, sub-fusiform 
root. Ex. 
olera'cea, (common cabbage, including all 
the varieties caused by culture, $ .) root 
caulescent, terete, fle.shy ; leaves smooth 
glaucous, repand-lobate Ex. 
na'pu!^, (kale or cole, $ .) root caulescent, 
fusiform ; leaves smooth, upper ones heart 
lanceolate, clasping, lower ones lyrate- 
tootlied. 
BRICKEL"LIA. 17—1. {CinerocephalcB.} 
cordifo'lin, (p. Au.) involucre many-flow 
ered ; coroUa tubular, 5-cleft ; stamens at- 
tached to the corolla ; akenes long, hairy . 
lower leaves cordate, acuminate, dentate, 
pubescent; upper ones obtusc; receptacb 
naked and dotted. 
BRI'ZA 3—2. (GraminecB.) [From the Greek 
britho, to nod.] 
me'dia, (quaking grass, rattlesnake grass, 
J. 2^.) panicle erect; spikelets heart-ovate 
about 7 flowered ; calyx smaller tliau tht 
flowers. 1 f. Probably iutrodaced 
