52 Lxx. RUBiACE^ (hiern). [Oldenlandia. 



Seeds nnmerous, small, more or less angular or rarely orbicular, 

 imbedded in the corrugations of, or peltately attached to, the thick 

 placentas ; testa thin, smooth or minutely granulated ; albumen fleshy 

 or horny ; embryo small, clavate. Herbs or shrubs with opposite 

 leaves, acuminate or setose stipules adnate to the petiole or leaf- base, 

 and small or delicate flowers arranged in terminal or axillary panicles 

 or clusters. 



A considerable genus found in the hotter parts of both the Old and New Worlds. 



Calyx-segments 4 or rarely 5, without intervening teeth 



(or occasionally with minute intermediate teeth in 



0. globosa). Capsule dehiscent (or tardily so in 0. 



wauensis). - 



Leaves petiolate. Stigma sub-entire. Capsule septi- 



cidal, dicoccous. Seeds orbicular 1. 0. Peltospermum, 



Leaves sessile or subsessile. Style with two short 

 linear stigmatic branches. Capsule loculicidally 

 dehiscent at or from the apex or indehiseent or 

 tardily dehiscent. Seeds angular. 

 Capsule subglobose, dehiscent. 

 Flowers tetramerous. 



Cymes terminal, densely corymbose or capitate. 



Leaves lanceolate or sub-linear ; stipules 



truncate, terminated by 4 or 5 subulate 



setae. Cjmies densely corymbose ... 2. 0. Bqjeri. 



Leaves elliptical ; stipules ovate, tridentate. 



Cymes globose 3. 0. 



Cymes terminal and lax or elongated or ample, 

 or axillary. 

 Corolla salver-shaped, exceeding the cal^rx. 

 Leaves lanceolate, faintly nerved. Capsule 



toughly coriaceous 4. 0. deciimhens. 



Leaves linear or nearly so, uni-nerved. 

 Capsule sub-membranous. 

 Stipules 3-1 -cuspidate. Flowers |-§ in. 

 long. 

 Corolla-lobes obtuse. 



Calyx pubescent ....... 5. 0. lasiocarpa. 



Calyx puberulous scabrid or glabrous. 

 Branches terete. Leaves fascicu- 

 late below. 

 Smooth, glabrous, glaucescent . 6. 0. rigida. 

 Glandular-scabrid, dull ... 7. 0. Schimperi. 

 Branches quadrangular. Leaves 



not fasciculate 8. 0. ohtusiloba. 



Corolla-lobes acute acuminate. 



Corolla-lobes linear-lanceolate . . 9. 0. senegalensis. 

 Corolla-lobes elliptic-lanceolate ... 10. 0. noctijlora. 

 Corolla-lobes oval, apiculate . . . 11. . grandifiora. 

 Stipules truncate or nearly so, setose- 

 ciliate. Flowers ^-j in. long. 

 Branches of the inflorescence sub- 

 spicate in fruit; flowers not 

 fasciculate. 

 Calyx-teeth linear-subulate, nearly 



equalling the corolla-tube . . . 12. 0. abyssinica. 

 Calyx-teeth lanceolate, short . . 13. 0. strumosa. 



