Grossera. | CXXII. EUPHORBIACE# (PRAIN). 817 
Lateral nerves 8-10 pairs, leaf-margins entire or slightly 
denticulate ; stamens over 20; buds subglobose . - Ll. G. paniculata. 
Lateral nerves 13-15 pairs, leaf-margins distinctly toothed ; 
stamens under 20; buds distinctly ovoid . : - 2 G. major. 
1. G. paniculata, Pax in Engl. Jahrb. xxxiii. 281. Shrub 
6-12 ft. high; twigs finely adpressed-pubescent. Leaves distinctly 
petioled, firmly membranous or chartaceous, obovate-oblong, shortly 
and abruptly acuminate, narrowed from about the middle to a cuneate 
or rounded base with two prominent glands at the junction with the 
petiole, margin entire or very shortly denticulate, 5-11 in. long, 14-4 in. 
wide, glabrous ; main nerves 8-10 on each side, slightly raised beneath ; 
petiole 3-1} in. long, glabrous, thickened near the apex. Flowers white, 
in terminal panicles 6-12 in. long; branches 1-1} in. apart, 3-6 in. 
long, naked in the lower half, with short ternary branchlets 1—} in. long ; 
bracts and bracteoles minute, ovate, acute, finely puberulous like the 
rhachis and branches; pedicel glabrous, ;!, in. long. Male: Calyx 
globose or subglobose, closed in bud, 7,—;/; in. across, splitting into 2 
or at times 3 valvate segments, glabrous externally, thinly membranous. 
Petals 5, contorted-imbricate, wide-ovate. Stamens 4-seriate, 5 to each 
whorl, on the elongated glabrous receptacle, with 2-3 terminal and 
central; base of the receptacle surrounded by 5 extra-staminal glands 
resembling sessile much-modified anthers, alternate with the filaments 
of the lowest 5 stamens and with the petals. Female panicles like the 
males but with shorter branches and with the tertiary branchlets bearing 
each a solitary flower, its pedicel ultimately } in. long. Calyx-lobes 
Imbricate. Petals narrow oblong, much exceeding the calyx-lobes, white. 
Ovary glabrous; styles at length spreading, 2-partite to the middle. 
ag % in. wide. Seed not seen ripe.—Vourneaua obovata, Pierre 
Upper Guinea. Cameroons: Bipinde, Zenker, 1741! 1760! 2070! 23761 
3050 ! 3088! 3125! 3372! 3460! 3532! 
Lower Guinea, Gaboon: near Libreville, Klaine, 1927! 3106! Munda, 
Sibange Farm, Soyaux, 82! Angom, 70 miles east of Gaboon, Bates, 557! Ufoa, 
85 miles east of Gaboon, Bates, 539! and without precise locality, Spire, 73! 146 
2. G. major, Pax in Engl. Jahrb. xxxiii. 282. Shrub; twigs 
glabrous. Leaves distinctly petioled, firmly membranous or chartaceous, 
obovate-oblong, stoutly and abruptly acuminate, narrowed from above 
the middle to a cuneate base, with two prominent glands at the junction 
with the petiole, margin distinctly denticulate, 10-12 in. long, 34-43 in. 
wide, glabrous; main nerves 13-15 on each side, distinctly raised 
neath; petiole 14-24 in. long, glabrous, thickened near the apex. 
Owers white, in terminal panicles, 9-18 in. long; branches 1-1} in. 
*part, 3-6 in. long, naked in the lower half, with ternary branchlets 
$ in. long; bracts and bracteoles minute, lanceolate, glabrous like 
the rhachis and branches; pedicels glabrous, 4-} in. long. Male: 
Calyx ovoid, subacute, closed in bud, } in. across, } in. long, splitting 
ito 2-3 valvate segments, glabrous, thinly membranous. Petals 5, 
VOL. VI.—skcrT. 1 36 
