86 LXX. RUBIACEE (HIERN). [ Dictyandra. 
ovate, contorted dextrorsely (as seen from inside), persistent. Corolla 
silky outside; tube funnel-shaped; throat glabrous or somewhat 
hairy ; lobes 5, ovate or oblong-lanceolate, longer than the tube, imbri- 
cated dextrorsely in bud. Stamens 5, inserted on the throat of the 
corolla ; anthers sessile, linear-tapering, exserted, glabrous ; connective 
mucronate ; cells mtrorse, divided into small compartments by longi- 
tudinal and many transverse septa. Disk columnar, truncate. Ovary 
2-celled ; style stout or filiform, tomentose or glabrous, with 2 spread- 
ing or erect linear or subulate branches ; ovules numerous, inserted in 
many rows on the placentas. Berry subglobose, fleshy, 2-celled, many- 
seeded. Seeds not very small, somewhat compressed and obtusely 
angular; testa dark, shining; albumen horny, oily, &c.—Trees or 
shrubs with opposite petiolate glossy, submembranons leaves, wide 
rounded or acuminate or cuspidate persistent stipules, and rather large 
flowers in terminal cymes which often terminate shortaxillary branches. 
An endemic genus. 
Cymes pedunculate. Flower 14-1} in. long. Calyx-lobes 
broadly ovate. Style exserted, tomentose . . . . . 1. D. arborescens, 
Cymes sessile. Flowers 3-4 in. long. Calyx-lobes ovate or 
lanceolate. Style included, glabrous . . . 2... 2. Dz involucrata. 
1. D. arborescens, Welw. mss. ex Benth. et Hook. f. Gen. Pl. ii. p. 
85. An arborescent or stout shrub, 8-25 ft. high, nearly glabrous. 
Branches opposite, spreading, elongated, leafy, obtusely and unequally 
4-sided or nearly terete below. Leaves oval, shortly acuminate, wedge- 
shaped at the base, firmly chartaceous, 5-10 by 2-4 in., dark green on 
both sides, persistent ; lateral veins about 7—9 on each side of the mid- 
rib, slender ; petiole }—1 in.; stipules ovate, apiculate, }—4 in. long, cili- 
olate, erect. Flowers yellow-greenish, 14-14 in. long, coriaceously 
rigid, sessile or shortly pedicellate, in trichotomous corymbose cymes. 
Calyx herbaceous, $—? in. long; tube shortly pubescent ; lobes broadly 
ovate, ciliolate or glabrate, longer than the tube. Corolla silvery out- 
side; lobes acute or apiculate, 3-4 in. long. Anthers nearly 4 in. long: 
Style exserted, tomentose-pubescent. Berry 3 in. diam. or more. 
Seeds quite black, glistening. 
Upper Guinea. Old Calabar, Rev. W. C. Thomson! 
Lower Guinea. Angola, Golungo Alto, 2500-2800 ft. alt., in wooded slopes 
of Serra de Alto Queta, Welwitsch ! 
2. D. involucrata, Hiern. A nearly glabrous shrub, 15—-20ft. high; 
branchlets obtusely quadrangular. Leaves elliptic-obovate, acutely 
acuminate, wedge-shaped at the base, 4-10 by 2-5 in.; margins flat ; 
lateral veins 9-12 on each side of the midrib; petiole 4-1 in. ; stipules 
rotund, reflexed, concave, 4-2 in. diam. Flowers 3-4 in. long, 00 short 
pedicels little narrower than the calyx, clustered in sessile cymes 
terminal and terminating short axillary branches; bracteoles oblong 
or linear, fugacious. Calyx 3-2 in. long, puberulous, obscurely ribbed ; 
lobes lanceolate, subfoliaceous, }-4 in. long, subacute. Corolla-lobes 
ovate or lanceolate, subobtuse, -1 in. long. Anthers half exserted. 
Style glabrous, half as long as the corolla-tube.—Leptactina involucrats, 
Hook. f. Ic. Pl. sub. t. 1092. 
Upper Guinea. Ambuas Bay, 1° N. lat. Mann! 
