696 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



2. Leaf blades narrowly linear to broadly lanceolate, acuminate at apex, acute 



and entire to pronouncedly hastate at base; flowers yellowish or purplish; 



pods barely 1 cm. wide where widest, not noticeably ridged, pubescent 



or glabrous (3). 



3. Herbage and pods canescent-pilose with short, spreading hairs; corolla 3 to 



4 mm. long, greenish yellow, the segments of the inner crown longer 



than wide, joined to the outer crown; pods acutish at base; leaf blades 



narrowly linear, not at all hastate or auriculate at base. 



3. F. HIRTELLUM. 



3. Herbage glabrous or sparsely puberulent with subappressed hairs (rarely 

 sparsely pilose) ; corolla 5 to 6 mm. long, purplish, the segments of the 

 inner crown subglobose, free from the outer crown; pods short-attenu- 

 ate at base; leaf blades narrowly linear to lanceolate, the base acute 

 and entire, angled, or auriculate, up to 2 cm. wide but usually much 

 narrower 4. F. heterophyllum. 



1. Funastrum crispum (Benth.) Schlechter, Repert. Spec. Novarum 



Regni Veg. 13: 284. 1914. 



Sarcostemma crispum Benth., PI. Hartw. 291. 1841. 



Greenlee, Gila, Pinal, Cochise, and Santa Cruz Counties, 4,000 to 

 6,000 feet, canyons among shrubs, summer. Western Texas to 

 southern Aiizona and Mexico. 



2. Funastrum cynanchoides (Decne.) Schlechter, Repert. Spec. 



Novarum Regni Veg. 13: 284. 1914. 



Sarcostemma cynanchoides Decne. in DC, Prodr. 8: 540. 1844. 



Greenlee County to Maricopa, Cochise, and Pima Counties, 1,500 

 to 4,500 feet, along streams and washes, climbing over bushes, 

 May to September. Western Texas to southern Arizona and north- 

 ern Mexico. 



The var. subtruncatum (Robinson and Fernald) Macbride, with leaf 

 blades truncate or subcordate at base and attenuate at apex (these 

 deeply cordate at base and apieulate or short-acuminate at apex in 

 the typical form), is occasional in Arizona. 



3. Funastrum hirtellum (A. Gray) Schlechter, Repert. Spec. Novarum 



Regni Veg. 13: 286. 1914. 



Sarcostemma heterophyllum var. hirtellum A. Gray, Bot. Calif. 1: 

 478. 1876. 



Black Mountains and near Boulder Dam, western Mohave County 

 (Epling and Robinson in 1935, Peebles 14785), Colorado River Valley, 

 Yuma(?) County (Palmer in 1876). Southern Nevada, western 

 Arizona, and southeastern California. 



4. Funastrum heterophyllum (Engelm.) Standi., Contrib. U. S. Natl. 



Herbarium 23: 1170. 1924. 



Sarcostemma heterophyllum Engelm. in Torr., U. S. Rpt. 

 Expl. Miss. Pacif. 5: 362. 1876. 



Grand Canyon (Coconino County) to Yucca (Mohave County), 

 south to Gila, Pinal, Pima, and Yuma Counties, 5,000 feet or lower, 

 common along washes, etc., climbing over small trees and shrubs, 

 April to September. Western Texas to southeastern California and 

 Mexico. 



9. MELLICHAMPIA 



Stems twining, retrorsely short-pilose in a definite line ; leaves long- 

 petioled, the blades triangular-ovate, cordate; inflorescences short- 



