504 LXXX. SAPOTACRA (BAKER). [ Sideroaylon. 
segments. Filaments subulate, as long as the corolla segments. An- 
thers minute, ovoid ; staminodes linear-subulate, as long as_ the fila- 
ments. Ovary globose, densely pilose; style slender, 3 in. long, 
glabrous in the upper half. 
Upper Guinea. Fernando Po, Mann! 
3. BUTYROSPERMUM, Kotschy ; Benth. et Hook. f. Gen. 
Pl. ii. p. 661. 
Calyx campanulate, with a short tube ; segments in two distinct 
rows, usually 8, sometimes 10. Corolla campanulate, as long as the 
calyx, with the same number of segments, which are entire, oblong and 
much imbricated. Stamens inserted opposite the segments of the 
corolla at their base; filaments subulate, glabrous ; anthers oblong- 
lanceolate ; staminodes one between each filament, large, oblong, peta- 
loid, fimbriate. Ovary globose, silky, 8-10-celled ; style long, subulate. 
Berry ellipsoid, with’a thin firm pericarp. Seed usually by abortion 
solitary, exalbuminous, with very thick amygdaloid cotyledons and a 
short radicle.—Erect trees, with copious milky juice, stipulate petioled 
entire coriaceous leaves usually crowded at the end of the branchlets 
_ flowers in dense umbels from the end of the branchlets, with the 
eaves, 
Endemic, including one certain and one doubtful species. 
Leaf 6-9 in. long, with prominent veins . soe ee we LB. Parkit. 
Leaf 2-3 in. long, with slender veins . . . . 2. . 2 Bi? Kirkii! 
1. B. Parkii, Kotschy in Pl. Knobl. t. 2. A tree reaching 4 
height of 30-40 ft., with a trunk 5-6 ft. in diameter branching like an 
oak, and yielding copious milky juice, which coagulates into a kind of 
caoutchouc. Leaves usually crowded at the tips of stout rugose 
glabrous branchlets, petioled, stipulate; petiole 2-3 in. long, glabres- 
cent, pubescent at first ; stipules lanceolate, subpersistent, about } in. 
long, silky on the back ; blade oblanceolate-oblong, 6-9 in. long, 3-4 
in. broad, broadly cuneate or rounded at the base, subcoriaceous, 
glabrous when mature on the upper surface, thinly pubescent beneath, 
furnished with 20-25 pairs of prominent erecto-patent main veins. 
Flowers in dense umbels from the axils of the leaves at the end of the 
branchlets ; pedicels 4-1 in. or more long, thinly clothed when young 
with ferruginous tomentum. Calyx campanulate, coriaceous, with a 
short tube and usually 8 oblong-lanceolate segments, the outer 4 
especially densely coated with ferruginous tomentum. Corolla as long 
as the calyx, with a short tube and oblong glabrous imbricated seg- 
ments. Stamens as long as the corolla-segments ; anthers oblong- 
lanceolate, % in. long, half as long as the subulate glabrous filaments. 
Staminodes oblong-cuspidate, shorter than the stamens. Ovary globose, 
silky ; style slender, variable in length, sometimes protruded from the 
corolla, Sometimes included. fruit ellipsoid, 14-2 in. long, with a 
thin pericarp and usually a single seed, with very thick cotyledons.— 
Pl. Tinn. 20 t. 8 B. Bassia Parkii, G@. Don ; A. DC. Prodr. viii. 199 
