CROWFOOT FAMILY 



197 



6. Myosurus cupulatus S. Wats. Arizona Mouse-tail. Fig. 1821. 



Myosurus cupulatus S. Wats. Proc. Amer. Acad. 17: 362. 1882. 



Leaves narrowly linear; scapes slender, often 6-8 cm. long; fruiting spikes slender, up to 

 5 cm. long; achenes rounded, the thickened portion forming a dorsal cup-like depression around 

 the base of the slightly spreading much flattened subulate beak. 



Hills and mountains, Sonoran and Transition Zones; Arizona and New Mexico, also locally in the Provi- 

 dence and Little San Bernardino Mountains, southern California. Type locality: "hills between the Gila and 

 San Francisco Mountains" and "on the Santa Catalina Mountains, at 8,000 feet altitude." March-April. 



15. *RANUNCULUS L. Sp. PI. 548. 1753. 



Glabrous or hairy annual or perennial herbs with fibrous, fascicled roots. Stems pro- 

 cumbent and rooting at the nodes or erect, 0.5-12 dm. long, branching or simple, obscurely 

 or obviously fistulous. Basal leaves entire or 3-lobed, -parted, or -divided, or pinnately 

 compound, the petioles dilated at the base; cauline leaves alternate or rarely opposite. 

 Flowers from terminal buds. Sepals 5, deciduous, or rarely marcescent-persistent, 2-20 

 mm. long. Petals yellow or sometimes white or rarely red, often fading to white in age, 



1814 



1815 



1816 



1814. Clematis pauciflora 



1815. Clematis columbiana 



1816. Myosurus minimus 



1817. Myosurus lepturus 



Text of the genus Ranunculus contributed by Lyman Benson. 



