BAMBUSA 
2 57 
xerophytes. A. caespitosa Vahl. is the Balsam-bog of the Falkland 
Is. , forming tufts like those of Raoulia. 
Babiana Ker-Gawl. Iridaceae (hi). 30 sp. S. Afr., Socotra. 
Baccaurea Lour. Euphorbiaceae (a, i. i). 50 sp. W. Afr., E. Ind., 
Polynes. 
Baccharis Linn. Compositae (in). 300 sp. Am. Some are leafless 
xerophytes with winged or cylindrical green stems. 
Backliousia Hook, et Harv. Myrtaceae (2). 5 sp. Austr. 
Bactris Jacq. Palmae (iv. 7). 90 sp. S. and Centr. Am. Firs, in 
groups of 3, one ? between two S . B. minor Jacq. is the Pupunha 
or peach-palm, cultivated in Brazil for its edible fruit. 
Baeckia Linn. Myrtaceae (2). 60 sp. Austr. to China. 
Baeria Fisch. et Mey. Compositae (vi). 20 sp. Calif. 
Bahia Lag. Compositae (vi). 12 sp. W. Am. 
Balanophora Forst. Balanophoraceae. 11 sp. Indo-mal. 
Balanophoraceae. Dicotyledons (Archichl. Santalales). 15 gen. with 
40 sp., all but one trop. Parasites on tree roots, to which the tuberous 
rhizome is attached by suckers (p. 176). From it springs the infl. 
(sometimes developed within the rhizome and breaking through it), 
which comes above ground as a spike or head with scaly leaves and 
small unisexual flrs. For details and figures see Nat. Pf., or 
Kerner’s Nat. Hist . of PI. Chief genera: Cynomorium, Scybalium, 
Balanophora, Langsdorffia. [Placed in Achlamydosporeae by Benth.- 
Hook., in Hysterophyta by Eiehler (Warming).] 
Balbisia Cav. Geraniaceae. 3 sp. Chili, Peru. 
Baldwinia Nutt. (Balduina). Compositae (v). 4 sp. N. Am. 
BallotaLinn. Labiatae (v. 2). 25 sp.^ Eur., Medit. B. nigra L. , the 
foetid horehound, is a common weed in Brit. 
Baloghia Endl. Euphorbiaceae (a, ii. 5). 14 sp. E. Ind. to New 
Caled. 
Balsaminaceae. Dicotyledons (Archichl. Sapindales). 2 gen. with 230 
sp., As., Afr., Eur., N. Am. Herbs with w^atery translucent stems 
and alt. leaves, usually exstip. Fir. £ , zygomorphic. K 5 (the 2 
anterior small or aborted, the posterior one spurred), petaloid; C 5 
(.the lateral petals united in pairs) ; A 5, the anthers adhering 
to one another and forming a cap over the ovary, whose growth 
ultimately breaks the sta. at their bases; G (5), 5-loc., with 00 
ovules, anatropous, pendulous with dorsal raphe. Fruit an ex- 
plosive capsule. Seed exalb. Chief genus: Impatiens. Benth.- 
Hooker unite B. with Geraniaceae (q. v .), but the arrangement 
of the ovule does not agree with that of G., being that of coh. 
Sapindales. Eiehler and Warming place B. as an independent order 
in Gruinales. 
Balsamodendron Kunth. = Commiphora Jacq. 
Bambusa Schreb. Gramineae (xm). 50 sp. As., Afr., Am., trop. and 
sub-trop. The bamboos are giant grasses, with much-branched 
17 
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