336 TREES OF NORTH AMERICA 



XHI. OLACACEJE. 



Trees or shrubs, with watery juices, their stems sometimes twining, and alternate usu- 

 ally entire persistent leaves, without stipules. Flowers perfect or polygamous, in axillary 

 cymes or racemes, rarely solitary; calyx 4 to 6-lobed; petals 4-6, inserted on a hypogy- 

 nous disk, free or united into a campaimlate or tubular corolla; stamens 4-12, inserted 

 on the tube of the corolla; filaments free, rarely united; anthers oblong, introrse, opening 

 longitudinally; ovary superior or partly inferior, free or immersed in the disk, 1-4-celled; 

 styles mostly united; stigmas entire or lobed; ovules 1-3 in each cell of the ovary. Fruit 

 drupaceous, naked or nearly inclosed in the enlarged disk, 1-celled, 1-seeded; seed pendu- 

 lous; embryo minute, erect, in copious fleshly albumen; radicle superior. 



Olacaceae with twenty-five genera and a large number of species is confined to the tropics, 

 and is most abundant in those of the Old World. 



CONSPECTUS OF THE NORTH AMERICAN ARBORESCENT GENERA. 



Corolla-lobes short; stamens as many as its lobes; drupe almost inclosed in the enlarged 

 disk of the flower; branches unarmed. 1. Schoepfia. 



Corolla-lobes elongated; stamens twice as many as its lobes; drupe nearly naked; branch- 

 lets armed. 2. Ximenia. 



1. SCHOEPFIA Schreb. 



Trees or shrubs with slender unarmed branchlets. Leaves entire, subcoriaceous, petio- 

 late. Flowers small, perfect in axillary cymes, rarely solitary; calyx disciform, obscurely 

 4-toothed, or nearly entire, petals 4, 5 or rarely 6, united, their tips free, valvate; stamens 

 opposite the petals, filaments free, anthers attached by the back; ovary partly immersed in 

 the disk, 3-celled; style elongated, stigma 3-lobed; ovules 3 in each cell, pendulous from 

 the free apex of the axile placentas. Fruit nearly inclosed in the enlarged disk of the flower, 

 the stone crustaceous or chartaceous. 



Schoepfia with twelve or fourteen species is distributed in the New World from southern 

 Florida and Lower California to Brazil and Peru, and in the Old World from southern 

 Japan and southern and western China to the East Indies and the eastern Himalayas. 



The generic name is in compliment to Johann David Schoepf, German physician and 

 botanist, and traveler in North America and the West Indies. 



1. Schoepfia chrysophylloides Planch. 

 Schoepfia Schreberi Small, not Gmel. 



Leaves elliptic to oblong-ovate, often slightly falcate, acuminate at apex, cuneate and 

 often unsymmetric at base, light green and lustrous above, paler below, l'-S' long, f- 



Fig. 305 



