BORA GINA CEAE 
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Bolbophyllum Spreng. = Bulbophyllum Thou. 
Boldoa Endl. = Peumus Molina. 
Boltonia L’Herit. Compositae (ill). 3 sp. U.S. 
Bomarea Mirb. Amaryllidaceae (in). 50 sp. S. Am. Like Al- 
stroeineria in leaf and fir., but often climbing. Umbels cymose. 
Bombacaceae. Dicotyledons (Archichl. Malvales). 20 gen. with no 
sp. trop. (chiefly Am.). Trees, often very large, with thick stems, 
sometimes egg-shaped, owing to a great development of water- 
storage tissue (see figs, in Kerner, Nat . Hist, of Pits. 1). Firs. £ , 
usually regular. K(5), valvate, often with epicalyx; C 5, convolute, 
the pets, asymmetric ; A 5 — 00 , free or united into a tube, the pollen 
smooth; G(2 — 5), in the latter case the cpls. opposite the pets., multi- 
loc. ; style simple, lobed or capitate ; ovules 2 — 00 in each loc., erect, 
anatropous. Seeds smooth, but often embedded in hairs springing 
from the capsule wall, with little or no endosperm. The order is 
united to Malvaceae by Eichler (Warming) and Benth.- Hooker. 
Chief genera : Adansonia, Bombax, Eriodendron, Durio. 
Bombax Linn. (excl. Pachira Aubl.). Bombacaceae. 50 sp. trop. 
Bonatea Willd. = Habenaria Willd. 
Bongardia C. A. Mey. Berberidaceae. 1 sp. Greece to Cent. As. 
Bontia Linn. Myoporaceae. 1 sp. W. Ind. 
Boopis Juss. Calyceraceae. 10 sp. S. Am. 
Boraglnaceae. Dicotyledons (Sympet. Tubiflorae). About 85 gen. 
with 1200 sp., trop. and temp., esp. Medit. Most are herbs, perennial 
by fleshy roots, rhizomes, &c. ; a few shrubs and trees. Leaves 
usually alt., exstip., generally, as well as the rest of the plant, covered 
with stout hairs (hence the name Asperifolieae, by which the B. are 
sometimes known). The infl. is a coiled cincinnus, sometimes, double, 
with a marked dorsiventrality. As the firs, open it uncoils, so that the 
newly opened firs, face always in the same direction (the morphology 
of this infl. is very imperfectly understood; “adnation” occurs, and 
dichotomy at the growing apex; see Nat. Pfl. &c.). 
Fir. g , usually regular, hypogynous, and 5-merous. K (5), imbri- 
cate or open, the odd sepal posterior; C (5), funnel-shaped or tubular, 
the limb usually flat; A 5, epipet., alternate to petals, antheis introrse; 
G (2), on hypogynous disc, 4-locular by ‘false’ septum (see Labiatae), 
usually with gynobasic style ; ovules 1 in each loc., erect, anatropous. 
Fruit a drupe or 4 achenes. Seed with straight or curved embryo in 
slight endosperm ; the radicle directed upwards. 
The floral arrangements are interesting. Most B. have a short 
tube, partly concealing the honey; many (esp. IV. 1 and 3) have 
scales projecting inwards from the throat of the corolla, thus fully 
concealing the honey, protecting it from robbery and narrowing the 
entrance, so that visiting insects must take a definite track. “The 
lower forms (e.g. Myosotis) are visited by flies (esp. Syrphidae), bees, 
and Lepidoptera, and are adorned with red, violet and blue colours. 
