3-1-5 



Order XXXIX. OLACINEjE (by Prof. Oliver). 



Flowers regular, hermaphrodite or unisexual. Calyx small, 4-5-toothed 

 -fid or -partite, occasionally nearly entire or obsolete, unchanged or accres- 

 cent in fruit. Petals 4-5, free or connate more or less, usually valvate in 

 "estivation. Stamens 4-10, rarely 12-40, free or united below more or less 

 to the petals, rarely raonadelphous ; anthers 2-celled. Disk cupulifonu 

 entire or lobed, rarely unilateral, or 0. Ovary free or the lower part im- 

 mersed, 1-celled or 3-5-celled, the dissepiments frequently incomplete above 

 (solid in Ptychopetalum). Style simple. Ovules solitary in each division 

 °t the ovary (rarely several in each cell) or geminate in 1-celled ovaries, 

 pendulous. Fruit 1-celled, 1 -seeded, dry or drupaceous, indehiscent. Seed 

 usually with a copious fleshy albumen, rarely exalbuminous ; embryo minute, 

 apical, or shorter than or nearly equalling the albumen, with foliaceous cotyle- 

 dons. Trees or shrubs, erect or scandent. Leaves alternate, entire or nearly 

 so. usually penniveined ; exstipulate. Inflorescence various. Flowers small. 



5>ect. 1. Olacese.— Stamens more numerous than the petals (except in Strombosia). 

 °<"y$-h-cetted, at hast below (solid in Ptychopetalum). Ovules solitary in each dici- 

 ■ °J the wary (except in Rhaptopetalum). 



*.vx accrescent. Stamens twice as many as petals 1. Heisteria. 



«.vx unchanged. Stamens twice as manv as petals 2. Ximknia. 



jjgj obsolete. Stamens 5-8. Ovary solid 3. Ptychopetai.um. 



n P ""changed or accrescent. Stamens 8-9 (3-5 anantherous) . 4. Oi,ax. 



s al yi accrescent. Stamens as many as petals and opposite ... 5. Stkombosia. 



j,wmeDS four times the petals. Ovules solitary 6. Coui.a. 



mens 30-40, monadelplious. Ovules about 6 in each cell . . 7- Rhaptopktali .u. 



ochU' 2 ' ° pilie8e -— Stamens as many as petals and opposite. Ovary 1-celled, 1- 

 * Calyx minute, unchanged. (Racemes at first strobiliform.) 



8. Opilia. 



e ct. 3. Icacinese.— Stamens as many as petals and alternate. Ovary \-celled (in 

 W'can genera). 



tjj fo yfcd- (Flowers capitate in umbellate peduncles) . . . 9. Lasianthera. 



Pew7sj ' (Flowers in elongate spikes) 10. Desmostachys. 



Petal! "it near, y throughout. Filaments adnate 11. Leptaulus. 



p et * s 8] a brous or nearly so, free 12. Apodytes. 



Pttallk ,° US ' connate \~\ from base Stamens free . . . . 13. Alsodeiopsis. 

 "earded. Embryo with foliaceous cotyledons 14. Icacina. 



lW^- f 'i *'- ^Ytocrenese.—Scande/it shrubs. Leaves opposite. Flowers dioecious. 

 ""« ample (in African species) 15. Iodes. 



!• HEISTERIA, Linn. ; Benth. et Hook. f. Gen. PL i. 346. 



p e J Werin ?-Mlyx small, 5-6-toothed or -lobed, in fruit much enlarged. 

 as m S ' valvate i'i activation, more or less hairy within. Stamens twice 

 d at an y as Petals, free or adnate to the petals below ; anthers small rctuu- 

 *olit° r d »dyn»ou8. Ovary fleshy, 3-celled nearly or quite to the apex ; ovules 

 ar J> pendulous. Fruit a globose or oblong drupe. Seed albuminous, 



