144- STERCULIACEAE — I45. SCYTOPETALACEAE 357 



22. Staminodes wanting. Ovules 2 in each ovary-cel). Shrubs or trees, . 23 

 Staminodes 2—8, usually 5 24 



23. Ovary-cells and styles 5. Anthers 20. Fruit with loculicidal dehiscence. — 



Species i. Island of Mauritius Astiria Lindl. 



Ovary-cells and styles 10. Anthers 20^30, associated in 5 bundles. 

 Fruit with loculicidal and septicidal dehiscence. — Species i. Island of 

 Reunion Ruizia Cav. 



24. Fertile stamens 5. Ovary 5-celled. Bracteoles 3, persistent. Herbs, 



undershrubs, or low shrubs. — Species 30. Tropical and South Africa. 



Melhania Forsk. 

 Fertile stamens 10 or more. Bracteoles deciduous or wanting. ... 25 



25. 0\'arv almost completely ■vceUed with i ovule in each cell. Petals slightly 



oblique, deciduous. Bracteoles remote from the flower. U:idershrnbs. 



-■ Species 3. Ea>t Africa Harmsia K. Schum. 



Ovary 3 — 10-, usually 5-celled, with 2 or more ovules in each cell. Trees 

 or shrubs 26 



26. Ovules 2 in each ovary-cell. — Species 120. Tropical and South Africa. 



Some species yield timber, fibres, and medicaments, or serve as orna- 

 mental plants. (Including Assonia Cav. and Xeropctalitin Del.) (Plate 



g^.) Dombeya Cav. 



Ovules 3 or more in each ovary-cell. Style simple 27 



27. Bracteoles palmately cut. Petals falHng off together with the staminal 



tube. Leaves linear. — Species i. Madagascar and Mascarenes. 



Cheirolaena Benth. 



Bracteoles entire or wanting. Petals persistent. — vSpecies 8. Madagascar 



and Mascarenes Trochetia DC. 



SUBORDER SCYTOPETALINEAE 



FAMILY 145. SCYTOPETALACEAE 



Trees or shrubs. Leaves alternate, undivided. Flowers in fascicles, racemes. 



or panicles. Calyx entire or lobed. Petals 3 — 16, free or almost free, valvate 



in bud, more rarely wholly united. Stamens numerous, slightly perigynous. 



Anthers attached by the base. Ovary superior, rarely half-inferior, completely 



or almost completely 3 — 8-celled. Ovules 2 or more in each cell, pendulous, 



inverted, with dorsal raphe. Style simple. Seeds albuminous. — Genera 5, 



species 40. West Africa. (RHAPTOPETALACEAE, under OLAC IX E A E.) 



(Plate 95.) 



T. Ovules 2 in each ovary-cell. Anthers usually opening by longitudinal 



slits. Corolla furrowed in the bud, subsequently separating into 5 



or more petals. Fruit one-seeded. Seeds usually without a crown of 



hairs. Flowers in axillary or terminal racemes or panicles. [Tribe 



OUBANGUIEAE.] 2 



Ovules 6 or more in each ovaiy-cell. Anthers usually opening by apical 

 pores. Corolla not furrowed in the bud, sometimes subsequently 



