27 6 
BRUCE A 
Bracea J. S. Mull. Simarubaceae. 5 sp. palaeotrop. Very astringent. 
The seeds of B, sumatrana Roxb. and other sp. are old native 
remedies in dysentery. 
Bruckenthalia Reichb. Ericaceae (iv. 9). 1 sp. S.E. Eur. 
Brugmansia Blume. Rafflesiaceae. 3 sp. Malay Arch. 
Brugmansia Pers. = Datura Linn. 
Bruguiera Lam. Rhizophoraceae. 5 sp. palaeotrop. One of the trees 
of the mangrove formation (p. 19 1). Like Rhizophora, but without 
the aerial roots from the higher branches. The roots in the mud give 
off erect aerating branches, as in Sonneratia, &c. 
Brunella Tourn. ex Linn. = Prunella Linn. 
Brunellia Ruiz et Pav. Brunelliaceae. 10 sp. Peru to Mexico. 
Brunelliaceae. Dicotyledons (Archichl. Rosales). Only genus Bru- 
nellia, placed in Simarubaceae by Bentham-Hooker. Fir. monochlam., 
unisexual, 4-5-7-merous, diplostemonous. Cpls. 5-2, each with 2 
pendulous ovules. Capsule. Endosperm. Leaves opp. or in whorls. 
Brunfelsia Plum, ex Linn. Solanaceae (v). 25 sp. trop. Am. Several 
are in cultivation in the tropics, and have flowers that change colour 
as they grow older (cf. Ribes, Fumaria, and see p. 100). 
Brunia Linn. Bruniaceae. 5 sp. S. Afr. 
Bruniaceae. Dicotyledons (Archichl. Rosales). ' 12 gen. with 50 sp. 
S. Afr. Heath-like shrubs, with alt. exstip. leaves, and racemose 
infl. Fir. g , usually regular, 5-merous, generally perigynous. Sta. 
in one whorl. Cpls. (3 — 2) each with 3 or 4 ovules, or 1 with 1 ovule. 
Capsule with 2, or nut with 1, seeds. Aril. Endosperm. Placed in 
Rosales by Bentham-Hooker. Chief genera: Brunia, Berzelia. 
Rarely seen in Europe. See Nat . PJi . 
Brunonia Sm. Goodeniaceae. 1 sp. Austr., Tasm. It differs from the 
other G. very much (see order), and is sometimes placed in a separate 
order. 
Brunsvigia Pleist. Amaryllidaceae (1). 9 sp. S. Afr. 
Brya P. Br. Leguminosae (ill. 7). 3 sp. Cent. Am., W. Ind. B. 
Ebenus DC. yields the wood known as Jamaica or American ebony, 
cocus or cocos wood, the heart wood turning black with age, just as 
in the true ebony (Diospyros). 
Bryanthus S. G. Gmel. Ericaceae (1. 3). 6 sp. N.W. Am., one of 
which, B. taxifolius A. Gray, is circumpolar, incl. Brit. 
Bryonia Linn. Cucurbitaceae (in). 8 sp. Eur., As., Afr. B. dioica 
Jacq. is our common white bryony, which marks the N. limit of the 
order in Eur. The <? fir. is about twice as large as the ? . Honey is 
secreted at the base of the perianth and protected in the male by the 
bases of the filaments. The fir. is visited in Low Germany chiefly 
by short tongued bees, and especially by Andrena fiorea F., which 
appears to confine itself to this plant (Muller). In Britain we have 
very few of these insects (in proportion), at any rate in the north and 
in Wales, and it is noteworthy that the bryony does not occur in 
