126 Bulletin of the University of Texas 



armed branches, thin light gray bark which bears numerous 

 conic cork based prickles. Leaves deciduous, alternate, un- 

 equally pinnate, leaflets 7-19, taper pointed and shallowly 

 toothed. Flowers in terminal panicles, dioecious. Fruit 

 globose capsules borne in dense clusters. 



Virginia to Florida and extending along the coast to Texas, 

 and north to Arkansas. 



2. Fagara Fagara (L.) Small. Wild Lime. A shrub or 

 small evergreen tree 25-30 high, with thin gray cork ridged 

 bark, and thorny branches. Leaves evergreen, unequally pin- 

 nate; leaflets 5-11, sessile with axis between the leaflets 

 winged. Flowers yellowish in axillary cymes. Fruit an ovoid, 

 rough capsule. 



A tropical species found in our area from Matagorda Bay 

 to the Rio Grande River. 



HELIETTA. Tulasne. 



1. Helietta parviflora Bentham. A shrub or small tree 

 20-25 high with erect slender trunk, ascending branches, 

 and thin brown bark. Leaves evergreen, small, trifoliate; 

 leaflets sessile, leathery, obovate. Flowers in axillary cymes. 

 Fruit a samara, with wing divided into 3-4 parts. 



A Mexican species extending into our area at Rio Grande 

 City. 



PTELEA L. Hop Tree. 



1. Ptelea trifoliata L. Hop Tree. Wafer Ash. A shrub 

 or sometimes a small round topped tree 20 high with smooth, 

 gray, bitter bark. Leaves deciduous, alternate, trifoliate; 

 leaflets sessile, taper pointed, strong scented when bruised. 

 Flowers greenish white in terminal cymes. Fruit a 2-seeded 

 broad winged samara. 



Ontario to Florida, Minnesota, Texas, New Mexico, Colo- 

 rado and northern Mexico. There is a wide range of varia- 

 bility in the shape and size of the leaves of the species. Fre- 

 quently cultivated for ornament. 



