CATALOGUE. 35 



a single locality at 10,000 feet altitude ; May-September. Varying much in 

 size and habit with the locality. (141.) 



Viola canadensis, L. From Hudson's Bay to North Carolina, west to 

 the Rocky Mountains and New Mexico, (Fendler ;) Washington Territory, 

 (Douglas.) Rarely collected westward. Found in the Wahsatch in a single 

 locality ; 7,000 feet altitude ; July. (142.) 



Viola Nuttallii, Pursh. Stem short, erect; leaves ovate-lanceolate, 

 somewhat pubescent or nearly glabrous, nearly entire, attenuated into a long 

 petiole; stipules lanceolate, entire or obscurely ciliate-toothed ; sepals lanceo- 

 late, acuminate ; flowers small, yellow, the spur very short. — Colorado and on 

 the Upper Missouri and Saskatchewan, west to Oregon and California. 

 Found in the East Humboldt Mountains, Nevada, and in the Wahsatch and 

 Uintas ; 6-8,000 feet altitude ; June, July. In all the specimens the stems 

 are very short and mostly decumbent, but a single pedicel equaling the 

 leaves. (143.) 



Var. PR^MOESA. (F. prcemorsa, Dougl.) Hirsute or very pubescent; 

 leaves repandly denticulate ; stipules often laciniately toothed ; petals more 

 or less tinged with brown. On the Pacific Coast from Vancouver to Califor- 

 nia. In the Washoe Mountains near Carson City ; 5-6,000 feet altitude ; 

 April. (144.) 



Var. VENOSA. A small subalpine form ; more or less pubescent ; leaves 

 ovate or sometimes rhomboidal, cordate or truncate at base, conspicuously 

 purple-nerved; flowers purplish-yellow, small. — Low, (2-3' high,) showing 

 the same tendency to the elongation of a single pedicel from each stem. It 

 much resembles V. pedunculata, but the flowers are only a third as large. 

 Frequent in the mountains from the West Humboldt to the Wahsatch, usually 

 near -the snow-line ; 6-9,000 feet altitude ; May- July. (145.) 



Viola Beckwithii, T. & G. Pac. R.R. 8urv., {BeckwitVs Bep.,) 2. 119, 

 1. 1. Subcaulescent ; ascending stems abbreviated ; cauline leaves biternately 

 or pedately parted, decurrent on the margined petiole, the lobes or segments 

 oblong-linear, hirsute-puberulent ; stipules minute, scarious, entire ; sepals 

 linear, obtuse, ciliolate ; lower petal barely saccate at the base, purple, with 

 yellow claws, the two upper shorter and deep violet. — Foliage somewhat like 

 that of V. delphinifolia, but the primary division compoundly divided in a ter- 

 nate or pinnatisect manner ; stem distinct ; leaf-lobes i' or less in length ; 

 stipules very small and inconspicuous, except those of the lowest leaves ; 



