BUNCHOSIA 
877 
Scotland and is rare in Wales. It would probably prove of interest 
to investigate its mechanism and insect-visitors in various parts of 
England. Being dioecious, it is dependent upon insects for fertili- 
sation, and it is possible that its distribution is largely determined by 
that of the insects suited to it (cf. Aconitum, Calystegia, &c.). This 
plant is said to be parthenogenetic. 
Bryophyllum Salisb. Crassulaceae. 4 sp. S. Afr., Madag. B. caly - 
cinum Salisb. in trop. of both worlds. In the notches on the leaves 
of this sp. adventitious buds develope, giving rise to new plants 
(p. 1 1 3). In B, proliferum Bowie there are simple and compound 
leaves on the same plant. Calyx and corolla are both gamophyllous. 
Euchanania Spreng. Anacardiaceae (1). 20 sp. trop. As. 
Buchenroedera Eckl. et Zeyh. Leguminosae (in. 3). 8 sp. S. Afr. 
Buchloe Engelm. {Bulbilis Rafin.) Gramineae (xi). 1 sp. B. dacly- 
loides Engelm., the buffalo-grass of the western prairies of the U. S., 
a good fodder. It is a small creeping grass. 
Buchnera Linn. Scrophulariaceae (in. 11). 30 sp. trop. 
Buckinghamia F. Muell. Proteaceae (11). 1 sp. Queensland. 
Bucklandia R. Br. Hamamelidaceae. 1 sp. B. populnea R. Br., 
Himal. to Java. The large stipules are folded against one another, 
enclosing and protecting the young axillary bud or infl. The firs, 
are in heads which stand in groups of 4. They are polygamous or 
monoecious, and are sunk in the axis. The “calyx-tube 5 ’ becomes 
visible as a ring after flowering. The wood is valued in the arts. 
Buckleya Torr. Santalaceae. 4 sp. N. Am., China, Japan. 
Buda Adans. = Spergularia Presl. 
Buddleia Houst. Loganiaceae. 70 sp. trop. and subtrop. This genus 
and its allies are sometimes placed in Scrophulariaceae, but possess 
stipules (though sometimes reduced to mere interpetiolar lines). 
Buettneria Loefl. Sterculiaceae. 50 sp. trop. 
Bufonia Sauv. ex Linn. Caryophyllaceae (11. 1). 15 sp. Medit. and 
1 Switz. Not unlike Juncus bufonius in habit. 
Buforrestia C. B. Clarke. Commelinaceae. 4 sp. trop. W. Afr. 
Bulbilis Rafin. = Buchloe Engelm. 
Bulbine Linn. Liliaceae (in). 25 sp. S. Afr. 
Bulbinella Kunth. Liliaceae (ill). 15 sp. .S. Afr., N. Z,, &c. 
Bulbocodium Linn. Liliaceae (1). 1 sp. Eur. 
Bulbophyllum Thou. Orchidaceae (22). 100 sp. trop., and S. temp. 
Epiphytes with great reduction of leaf surface. The leaves are often 
mere scales and the assimilation is performed by the tubers. In B. 
minutissimum F. Muell. and other sp., the tubers are hollow with the 
stomata on the inner surface (cf. the leaf of Empeirum). For the fir. 
see Darwin’s Orchids , p. 137. 
Bulbostylis DC. = Brickellia Ell. 
Bulliarda DC. = Tillaea Michx. 
Bumelia Sw. Sapotaceae (1). 20 sp. Am. 
Bunchosia Rich, ex Juss. Malpighiaceae (11). 30 sp. trop. Am. 
