3i; 



Order XXXIX. OLACINEjE (l)y IVuf. DHvit). 



Flowers regnlar, liermaphrodite or unis('xii;il. ("iilyx sinjill, ^-o-toothf-d 

 -fid or -partite, occasionally nearly entire or obsolete, unehari^ed or accre«i- 

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

 sestivation. Stamens 4-10, rarely 12-40, free or united below more or Ifss 

 to the petals, rarely monadelphous ; anthers 2-rt'lled. Oisk cupuliform 

 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 abov.- 

 (solid in Ptychopeinlum). Style simple. Ovules solita'ry in each division 

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

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

 usually with a^ copious fleshy albumen, rarely exalbuminous ; embrj'o minuti-, 

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

 dons. — Trees or shrubs, erect or scandent. Leaves alternate, entire or nearlv 

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



Sect. 1. Olacese. — Stamens more numerous than the petals (except in Strombnttn ). 

 Ovary Z-o-celled, at least below (solid in Fti/chopetalum ). Ovules solitary in each divi- 

 sion of the ovary (except in Rhaptopetalum ). 



Calyx accrescent. Stamens twice as many as petals 1. HtiSTKRU. 



Calyx unchanged. Stamens twice as many as petals 2. Ximknia. 



Calyx obsolete. Stamens 5-8. Ovary solid 3. PrvcMOPF.TALrii. 



Calyx unchanged or accrescent. Stamens 8-9 (3-5 ananfherous) . 4. Oi.ax. 



Calyx accrescent. Stamens as many as petals and opposite ... 5. Stkombosia. 



Stamens four times the petals. Ovules solitary 6. Coui.a. 



Stamens 30-40, monadelphous. Ovules about 6 in each cell . . 7. Rhaptopktam m. 



Sect. 2. Opiliese. — Stamens as many as petals and opposite. Ovary X-celled, I- 

 ovuled. Calyx minute, unchanyed. (Racemes at first strobiliform.) 



8. Opilia. 



Sect. 3. Zcacinese. — Stamens as many as petals and alternate. Ovarii \-celled (in 

 African genera). 



Anthers tufted. (Flowers capitate in umbellate peduncles) ... 9. Lasia.nthera. 



Anthers glabrous. (Flowers in elongate spikes) 10. DKSMosTArHis. 



Petals united nearly throughout. Filaments adimte 11. Lkitaims. 



Petals glabrous or nearly so, free 12. Apodytes. 



Petals glabrous, connate \-\ from base Stamens free . . . .13. .\i,soDKiopsig. 



Petals bearded. Embryo with foliaceous cotyledons 14. Icaclna. 



Sect. 4. Phytocreneae. — Scandent shrubs. Leaves opposite. Plotcer* duecivus. 

 Perianth simple (in African speciesj ". .15. Iodks. 



1. HEISTERIA, Linn.; Benth. et Hook. f. (mu. 1M. i. :ur>. 



Flowerino:-calyx small, 5-6-tootlied or -lobed, in fiuit much eidargfd. 

 Petals 5-6, valvate in aestivation, more or less hairy within. Stamr is tv\i{e 

 as, many as petals, free or adnate to the petals below ; anthers small rctun- 

 date or didymous. Ovary fleshy, 3-celled nearly or quite to the apex ; ovules 

 solitary, pendulous. Fruit a globose or oblong drupe. Seed albuminous, 



