

LX. OLACINE^E. 337 



PERIANTH l single. SEPALS 4-5 (rarely 6), distinct, or coherent in a campanulate or 

 tubular calyx, valvate in aestivation. STAMENS 4-10 (rarely 12), often adnate to the 

 sepals, all antheriferous, or rarely some sterile (Olax, Liriosma} ; filaments free, or 

 very rarely monadelphous (Aptandra) ; anthers erect, versatile or rarely adnate (Cathe- 

 dra, Lasianthera, &c.). DISK very various, free, or adnate to the calycule or ovary, 

 sometimes or inconspicuous. OVARY free, or the base partially sunk in the disk, 1- 

 celled, or falsely 3-5-celled by imperfect septa, or very rarely truly 3-celled (Emmotum); 

 ovules anatropous, without coats and reduced to the nucleus, sometimes 2-3 (rarely 

 4-5), collaterally pendulous, either from the top of a central placenta, or from the 

 top of the ovarian cavity, and excentric (in consequence of the lateral union of the 

 placenta with the wall), rarely solitary and similarly pendulous (Opilia, Pennantia), 

 very rarely nearly erect and basilar (perhaps owing to the suppression of the placenta) 

 (Cansjera, Agonandra) . FRUIT mostly a drupe, 1-celled, 1-seeded, superior, or be- 

 coming inferior by the accrescence and adherence of the calycule. SEED with 

 fleshy copious albumen, which is entire or sometimes ruminate, lobed, or partite 

 ('Aptandra, Gomphandra, &c.). EMBRYO small, at the top of the albumen, or nearly 

 as long as the albumen, and straight ; radicle cylindric, superior ; cotyledons small, or 

 large and foliaceous, entire or cut. 



TRIBE I. OLACE^. 



Stamens unequal in number with the sepals (Olax) or double (Ximenia, Heisteria, 

 &c.), or equal an*J opposite (Erythropalum, Anacolosa, Strombosia, &c.). Ovary 1- 

 celled (Erythropalum, Olax, Ptychopetalum, &c.), or with 3-5 incomplete 1-ovuled 

 cells (Ximenia Heisteria, Liriosma, Schcepfia, Anacolosa, Aptandra). Ovules pendu- 

 lous from the top of a central placenta. 



PRINCIPAL GENEEA. 



Aptandra. Heisteria. Xirnema. Olax. Liriosma. 



Erythropalum. Strombosia. Cathedra. Anacolosa. Schcepfia. 



TRIBE II. OPILIE^E. 



Flowers isostemonous. Stamens opposite to the sepals. Ovary 1-celled, 1- 

 ovuled. Ovule basal, nearly erect. 



PRINCIPAL GENERA. 

 Cansjera. Agonandra. Lepionurus. Opilfcl. 



TRIBE III. ICACINE^. 



Flowers isostemonous. Stamens alternate with the sepals. Ovary 1-celled, 

 with 1-2 ovules pendulous from the top of the cell, very rarely with 3 perfect 1-2 

 ovuled cells. 



PRINCIPAL GENERA. 



Lasianthera. Gomphandra. Desmostachya. Apodytes. Mappia. Emmotum. 

 Pennantia. Poraqueiba. Icacina. Platea. Villaresia. 



Most authors regard the receptacular cup here alluded to as a calyx, and the calyx as a corolla. ED. 



Z 



