128 LXXXIV. APOCYNACEH (STAPF). | Calocrater. 
20. CALOCRATER, K. Schum. ia Engl. & Prantl, Pflanzenfam. 
iv. ii. 175, fig. 58, S-T. 
Calyx rather small, herbaceous; sepals ovate-lanceolate, acuminate, 
imbricate, with minute glands at the base. Corolla funnel-shaped- 
campanulate; tube cylindric and slender at the base, then widened, 
without appendages in the throat ; lobes short, very broad and oblique, 
overlapping to the left not inflexed in bud. Stamens inserted at the 
constriction of the corolla-tube ; anthers conniving in a cone, subsessile, 
free from the stigma, oblong, acute, shortly 2-lobed at the base; lobes 
subobtuse, empty at the base; filaments reduced to a callous glabrous 
swelling. Disc annular, fleshy, adnate to the ovary. Carpels 2, free 
except at the very base; style filiform; stigma cylindric, slightly 
grooved, viscous, minutely apiculate, without an appendage or rim at 
the base, reaching to the base of the anthers; ovules numerous, plur!- 
seriate. Fruit unknown.—An undershrub, producing erect, sub- 
herbaceous shoots from a creeping rhizome. Leaves opposite, subsessile, 
papery; axillary stipules distinct, obtuse, joining around the stem, 
secreting some resin, without external glands(?). Flowers large, in 
sessile bracteate few-flowered axillary (pseudo-axillary ?) clusters. 
Species 1, endemic. 
1. C. Preussii, X. Schum. in Engl. & Prantl, Pllanzenfam. iv. ii. 175, 
fig. 58, S-T. An undershrub, producing erect shoots, ultimately woody 
at the base and 2-3 ft. high, from a creeping rhizome, glabrous in all parts; 
stems terete with prominent lines on the sides alternating with the leaves. 
Leaves subsessile, oblong to lanceolate-elliptic, acuminate, acute or sub- 
acuminate at the base, 4~7 in. long, 14-2? in. broad, pale green, herba- 
ceous; secondary nerves 8—12 on each side, oblique; veins obscure. Flowers 
in few-flowered dense sessile axillary (pseudo-axillary ?) clusters ; bracts 
ovate, acute to caudate, up to 2 lin. long, herbaceous. Sepals ovate to 
ovate-lanceolate, acuminate, 2-3 lin. long, herbaceous, with several 
minute basal glands within. Corolla white; tube over 2 in. long; 
slender, cylindric up to 8 lin. above the base then funnel-shaped- 
campanulate, about } in. wide at the mouth, quite glabrous except for 
a minute tuft of hairs below each anther ; lobes somewhat asymmetric, 
about 7 lin. long, 8-9 lin. broad. Stamens inserted 7 lin. above the 
base, 2? lin. long. Style 44 lin. long, filiform; stigma cylindric, 2 lin- 
long, minutely apiculate. 
Upper Guinea. Cameroons: Kombu Niugu, Preuss, 74! 
21. CRIOCERAS, Pierre in Bull. Soc. Linn. Paris, 1897, 1311. 
Calyx middle-sized, herbaceous ; sepals 5, free, unequal, ovate- 
lanceolate, acuminate, each with several basal glands within. Corolla- 
tube slender and cylindric to above the middle, then funnel-shaped- 
campanulate or campanulate, without appendages ; lobes broad, ovate: 
oblong, overlapping to the left, not inflexed in bud. Stamens inserté 
