WOOTON AND STANDLEY— FLORA OF NEW MEXICO. 429 



KEY TO THE GENERA. 



Sepals auriciilate at the base; flowera mostly large and 



showy; lower petal spurred 1. Viola (p. 429). 



Sepals not auriciilate; flowers small, greenish; upper and 



lateral petals markedly unequal - 2. Calceolaria (p. 431). 



1. VIOLA L. Violet. 



Low perennial herbs, acaulescent or with short stems, with alternate stipulate 

 leaves of various shapes; flowera solitary, scapose, on axillary peduncles, often of 

 two kinds, the later ones cleistogamous ; petals irregular, the lowermost spurred or 

 saccate at the base; capsules elastically dehiscent. 



The writers wish to acknowledge their appreciation of the assistance of Dr. Ezra 

 Brainerd in the preparation of the account of this genus. 



KEY TO THE SPECIES. 



Plants acaulescent. 

 Leaf blades lobed. 



Lobes of leaves linear or nearly so, numerous, extending 



nearly to the base 1. V. pedatifida. 



Lobes oblong, few, separate only about half way to the 



base 2. V. wilmattae. 



Leaf blades not lobed. 



Flowera white 3. V. pallens. 



Flowers blue. 



Leaves broadly ovate, obtuse; capsules 5 to 10 mm. 



long 4. V. nephrophylla. 



Leaves deltoid, acutish; capsules 10 to 15 mm. long. . 5. V. missounensis. 

 Plants caulescent. 



Flowers yellow or brownish 6. V. pinetorum. 



Flowers blue or white. 

 Flowers blue. 



Leaves deeply cordate; stems much elongated, 



slender, not cespitose 7. V. montanensis. 



Leaves rounded to acutish at the base; stems stout, 

 thick, cespitose. 



Leaves glabrous or nearly so 8. V. adunca. 



Leaves puberuleut 9. V. puberula. 



Flowers white or nearly so. 



Stipules fimbriate 10. V. reptans. 



Stipules entire. 



Leaves nearly glabrous beneath; petals not 



retuse 11. V. canadensis. 



Leaves muriculate-scabrous on both surfaces; 



petals retuse 12. V. muriculata. 



1. Viola pedatifida Don, Hist. Dichl. Pi. 1: 320. 1831. 

 Type locality: North America. 



Range: Colorado and New Mexico to Saskatchewan and IlUnoia. 

 New Mexico: Sierra Grande; between Park View and Tierra Amarilla. Plains 

 and low hills, in the Upper Sonoran Zone. 



2. Viola wilmattae Pollard & Cockerell, Proc. Biol. Soc. Washington 15: 18. 



1902. 

 Type locality: Sapello Canyon, Beulah, New Mexico. Type collected by Mra. 

 W. P. Cockerell in 1901. 



