Buaus. | CXXII, EUPHORBIACEE (HUTCHINSON). 609 
another ; ovules 2 in each cell, pendulous from the apex but distant 
from the outer angle; raphe dorsal. Capsule ovoid, loculicidal ; valves 
2-horned with the persistent styles ; pericarp woody ; endocarp cartilagi- 
nous. Seeds oblong or ellipsoid, with a small strophiole; testa crus- 
taceous, shining, usually black; albumen rather fleshy; cotyledons 
oblong.—Trees or shrubs, much-branched, usually glabrous. Leaves 
evergreen, opposite, shortly petiolate, penninerved. Racemes or cymes 
axillary, sessile or shortly pedunculate. Bracts resembling the perianth- 
segments. Flowers sessile or shortly pedicellate, the terminal one female, 
the remainder male. 
About 21 species, 6 from temperate and montane regions of the northern hemi- 
sphere, 3 from Tropical Africa, 1 each from Madagascar and South Africa, the 
remainder West Indian. 
Authers sessile ; rudimentary ovary absent from the male 
flowers. 
Leaves rhomboid-oblanceolate to narrowly oblanceo- 
late, rounded at the apex, under 1 in. long and 
about } in. broad . f : ‘ : : . IL. B. benguellensis. 
Leaves lanceolate or almost ovate-lanceolate, gradually 
tapered to an obtuse or subacute apex, 13-23 in. 
long, $-f in. broad. ‘ : : : 
Anthers exserted, borne on filaments about 1} lin, long 
rudimentary ovary present in the male flowers 
2. B. nyasica, 
. 3. B. Hildebrandtii. 
1. B. benguellensis, Gilg in Engl. Jahrb. xxviii. 115. A tree 
or shrub, glabrous in all its parts; branchlets tetragonous, longitudi- 
nally sulcate. Leaves rhomboid-oblanceolate to narrowly oblanceolate, 
gradually narrowed into a very short petiole, obtuse at the apex, less 
than 1 in. long, about } in. broad, subchartaceous to almost coriaceous, 
shining on the upper surface, dull below ; nerves close, parallel, distinct 
above but not below. Flowers not known. 
Lower Guinea. Angola: Huilla, Antunes, 464! 248! 
Var. hirta, Hutchinson in Kew Bulletin, 1912, ined. Branchlets rather densely 
‘nd shortly pubescent ; under surface of the leaves sparingly pubescent. Male flowers 
Solitary in each leaf-axil, subsessile, surrounded by 3 or 4.small scaly bracts. Perianth- 
Segments 4, decussate, ovate-elliptic, obtuse, $ lin. long, } lin. broad, slightly coria- 
eous in the middle, membranous towards the margin, glabrous. Stamens 4; anthers 
sessile, } lin. long, glabrous. Rudimentary ovary absent. 
Lower Guinea. Angola: 10 miles north of the mouth of Lifuni River, 
Gossweiler, 4901 | 
2. B. nyasica, Hutchinson in Kew Bulletin, 1912, ined. Ashrub or 
tree; branches subterete, slightly grooved, glabrous; young branchlets 
Somewhat compressed, glabrous. Leaves lanceolate or subovate-lanceo- 
late, gradually tapered to an obtuse or subacute apex, cuneate at the 
Se, 13-23 in. long, 4-3 in. broad, entire, thinly coriaceous, slightly 
suning above, dull below, glabrous on both surfaces; lateral nerves 
about 15 on each side, spreading from the midrib at an angle of 45°, 
oped and forming an intramarginal nerve about 4 lin. from the 
Margin, visible on both surfaces ; petiole very short. Flowers axillary, 
* male and female in the lower, often only a pair of females in the 
VOL. VI.—sxEcT. 1 2R 
