294 Small: Shrubs and Trees 



6. Ptelea rhombifolia Heller* 



A shrub 2-2.5 m. tall, branching above, the foliage densely 

 pubescent. Leaflets 3 ; blades rhombic-ovate to rhombic-orbicu- 

 lar, 2.5-5 cm. long, blunt, crenate, dull green above, the terminal 

 one but little longer than broad : petals pubescent without, about 

 4 mm. long : filaments slightly pubescent near the base : samaras 

 nearly orbicular, 1.5—2.5 cm. broad. 



In open woods, southern Texas. Spring. 



7. Ptelea Toxicodendron sp. nov. 



A branching shrub 1-2 m. tall, with glabrous foliage. Leaflets 

 3 ; blades oval or rarely oval-ovate, 1.5-6 cm. long, rounded or 

 blunt at the apex, crenate or somewhat crenate-lobed, dark green 

 and lustrous above, slightly paler .beneath : panicles few-flowered : 

 petals about 5 mm. long, glabrous : filaments densely pubescent 

 below : mature fruit not seen. 



In gravelly soil, near Kerrville, Texas, Spring. 



A species most closely related to Ptelea rhombifolia, but easily 

 distinguished by its glabrous or nearly glabrous leaflets whose 

 blades are lustrous above, the filaments which are densely pubescent 

 below and the apiculate anthers. 



The original specimens were collected by Mr. A. A. Heller at 

 Kerrville, Texas, and distributed in his Plants of Southern Texas, 

 under no. 1690. Type in the herbarium of Columbia University. 



