162 LXX. RUBIACEZ (HIERN). [ Craterispermum. 
the calyx, ciliolate, clasping. Calyx-limb longer than the ovary, with 
5 depresso-deltoidteeth. Corolla-tube subcylindrical ; lobes linear-oblong 
nearly as long as the tube. Anthers partly included ; filaments very 
short. Style bidentate. Berry black-purple, ovoid, 3 in. long. Seed 
solitary, deeply excavated on the face. 
Nile Land. Niamniam-land, by streams, Boddo, Schweinfurth ! 
5. ©. montanum, Hiern. A small tree, 20 feet high. Leaves 
elliptic-oblong, narrowed at both ends, thinly coriaceous, green on 
both sides when dry, net-veined, 2~6 by $-12 in.; lateral veins 
about 6-9 pairs, slender, not conspicuous; petiole 4-4 in.; stipules 
broadly ovate, apiculate, connate below, shorter than the petiole. 
Flowers few together, subsessile, in small rather supra-axillary pedun- 
culate heads; common peduncle solitary, {~3 in. long; bracteoles 
broadly ovate, mucronulate, clasping, glabrous. Calyx-limb longer 
than the ovary, with 5 short broad mucronulate glabrous teeth. 
Corolla unknown. 
Upper Guinea. Summit of the Peak of St. Thomas, Mann! Mucumbrara, St. 
Thomas, Welwitsch ! (leaves yellowish green). 
55. IXORA, Linn.; Benth. et Hook. f. Gen. PI. ii. p. 113. 
Calyx-tube ovoid, often bracteolate at the base ; limb short, 4- or 
rarely 5-toothed or shortly lobed or truncate and entire, persistent. 
Corolla salver-shaped or shortly so; tube cylindrical, usually slender ; 
throat naked or somewhat bearded; limb spreading, 4- or rarely 
5-partite, lobes shorter than or equalling the tube, dextrorsely con- 
torted in the bud (as seen from inside). Stamens 4 or rarely 5, in- 
serted on the throat or at the mouth of the corolla, more or less 
exserted, glabrous; filaments short; anthers linear, usually apiculate, 
spreading or’ erect, fixed by the back near the base. Disk fleshy, 
glabrous. Ovary 2-celled ; style filiform, glabrous, equalling or shortly 
exceeding the tube of the corolla, with two short spreading or recurve 
rarely erect or connate branches ; ovules solitary, peltately inserted at 
the middle of the septum, amphitropous; micropyle inferior. Berry 
pisiform, subdidymous or subglobose or oblique, coriaceous or fleshy, 
2-1-celled ; pyrenes 2-1. Seeds convex on the back, concave on the 
face; umbilicus ventral; testa membranous; albumen cartilaginous; 
embryo dorsal, curved, cotyledons foliaceous, radicle terete, inferior. 
—Glabrous or glabrescent shrubs or small trees, with opposite ever 
green leaves, and white or red flowers often elongated, arranged ™ 
terminal or rarely lateral bracteolate cymes. 
A large genus occurring throughout the tropics, especially in the East Indies. 
Inflorescence trichotomously branched. Flowers }-3 in. 
long. 
Flowers 2-3 in. long. Inflorescence pedunculate, 
Leaves all subsessile. Bracteoles ovate . . . . 1. ZL radiata 
Leaves petiolate except the uppermost ones. Bracteoles 
subulate . . . 2. I, odvurata. 
