82 



BETULA— BRIZA. 



BE'TULA 19—12. {Amentacea.) [Latin, 

 birch.] 



popnlifoUa, (white birch, poplar birch, 

 Ju. Tp .) leaves deltoid, long-acuminate, une- 

 qually seirate, verj' glabrous ; scales of the 

 Btrobile with rounded, lateral lobes; peti- 

 oles glabrous. 30-40 f. 



pap?/ra'cea, (paner birch, '^ .) leaves ovate, 

 »''uminate, doubly seirate ; veins hirsute 

 beneath ; petiole glabrous ; pistillate ament 

 peduncled, nodding; scales with lateral, 

 shorty sub-orbicular lobes. The bark used 

 by tlie Indians for canoes. 



lenf'ta, (black bircli, M. ^ .) leaves hearl- 

 ovate, sharp-serrate, acuminate ; nerves and 

 petioles pilose beneath ; scales of the stro- 

 bile glabrous, with obtuse, equal lobes, hav- 

 hig elevated veins. Wood resembles ma- 

 hogany. "Very sweet-scented. 80 f. 



glandule/ sa, (scnib birch, M. Ip.) 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. Tp.) branches 

 pubescent, dotted ; leaves orbicular-obovate, 

 petioled, dense-pubescent beneath, pistil- 

 late ament cylindric. 2-3 f. 



BI'DENS. 17-3. (CorymbifercB.) [From frf^, 



two, and dens, tooth.] 



cer"nua,{y. Au. 0. water beggar-ticks,) 

 flowers .sub-radiate, cemuous; outer invo- 

 lucre as long as the flower ; leaves lanceo- 

 late, sub-connate, dentate. Ponds and 

 ditches. 1-2 f. 



chrysnnthemoi'des, (daisy beggar-ticks, 

 Au. @.) flowers rayed, drooping rays 

 erect, longer than the sub-equal involucre ; 

 leaves oblong, tapering both ends, toothed, 

 connate ; flowers large. 



h'ipin")ia'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 (Polemoma:.) [In honor 



of the Abbe iJignon.] 



radi'cnns (trumpet flower, r. and y. Ju. 

 ^ .) leaves pinnate, leafets ovate, toothed, 

 acuminate; coymb terminal; tube of the 

 corolla thrice as long as the calyx; stem 

 rooting. _ Most beautiful climbing shnib. 

 One variety, yiJaw"»2m,has yellowish scarlet 

 flowers; another variety, coccm"ea, has 

 bright scarlet flowers. Cultivated. 



crucif'era, (y. r. J. ^.) leaves conjugate, 

 ciiTOse ; lower ones ternate ; leafets heart- 

 ovate, acuminate ; racemes axillary ; stem 

 muricate. 



BLI'TUM. 1—2. (AfripHces.) [From the 



Greek bliton, an insipid pot-herb.] 



capita'tum, (strawberry blite, r. J. ^.) 

 heads in a terminal spike, not intermixed 

 with leaves; leaves triangular, toothed. 

 ]5i. 



mariti'mum, (Aug. %.) stem erect ; peri- 

 anth membranaceous ; clusters axillary, 

 spiked, naked ; leaves lanceolate, tapering 

 to each end, ga.sh-toothed. Salt marshes. 

 1-2 f. 



virga'ium, (slender blito, r. J. Q.) late- 



I ral heads scattered, top ones leafy ; leaves 

 triangular-toothed. 



BOERIIAA'VIA. 3—1. (Ni/ctagines.) [In 



honor of Boerhaave, the celebrated physician.] 



erec"ta, (w. p. J. 2^.) stem columnar, tri- 



chotomous, rough below, smooth above ; 



flowers in coiymb-panicles. S. 



BOLE'TUS. 21—6. (Fungi.) [FTom bolos, a. 



mass.] 



ignia rina, dilated, smooth, cuticle in 

 ridges ; pileus hard, becoming dark at tlie 

 base, at the margin cinnamon color, beneath 

 yellowish white. Grows on trunks of 

 trees. General farm like a horse's hoof. It 

 is called touclixcood. 

 BOLTO'NIA. 17—2. {Corymbiferm.) 



asteroidcs, (false a.ster, w. r. Au. 21.) 

 leaves verj' entire ; flowers long-peduncled; 

 seed oval, sub-awnless, glabrous, 

 . glastifo'lia, (false camomile, w. Ju. 2J[.) 

 loAver leaves sen-ate ; flowers short-pedun- 

 cled; akenes obcordate, apparently v^anged, 

 pubescent ; awns of the egret two, of equal 

 length with each other. Resembles an"the- 

 mis cof'ula. 



BORA'GO. 5—1. (Boraginea.) [Formerly 

 called corago, from cor, the heart, and ago, 

 to affect, because it was thought to cheet 

 the spirits.] 



officina'Iis, (borage, b. Ju. ^.) leaves al- 

 ternate ; calyx spreading. Ex. 



africa'na, {%.) leaves opposite, petioled, 

 ovate ; peduncle many-flowered. Ex. 

 BOTRYCH"IUM. 21—1. (Ftlices.) ZBotrus, 

 a bunch of grapes, from the fructification 

 re.sembling one.] 



fumaj-ioi'des, (grape, fern, J. 2^.) stipe 

 naked; frond smooth, radical, 3-parted, hi 

 pinnate ; leafets lunate, crenate ; spikes bi 

 pinnate. 



virgin"icum, (rattlesnake fern, Ju.) some- 

 what hairy ; scape bearing the frond m the 

 middle; frond 3-parted, bipinnatifid ; divis 

 ions incisely pimiatifid ; segments obtuse, 

 about 3-toothed ; spikes decompound. 2 f 

 BRAS"SICA. 14—2. {Cruciferce.) 



ra'pa, (turnip, $ .) i-oot caulescent, orbicu 

 lar, depressed, fleshy ; radical leaves rough, 

 cauline ones very entire, smooth. Var. 

 ruta-haga, 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'pus, (kale or cole, $ .) root caulescent, 

 fusiform ; leaves smooth, upper ones heart- 

 lanceolate, clasping, lower ones lyrate- 

 toothed. 



BRICKEL"LIA. 17—1. (Cinerocephalce.) - 

 cordifo'Ua, (p. Au.) involucre many-flow 

 cred ; corolla tubular, 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. {Graminccc.) [From the Greek 

 britho, to nod.] 



mefdia, (quaking grass, rattlesnake grass, 

 J. 2/.) panicle erect; spikelets heait-oviite. 

 about 7-flowered ; calyx smaller than the 

 flowers. 1 f. Probably introduced. 



