CATALOGUE. 239 



moist slopes. In the mountains from Idaho to Colorado and Utah. Fre- 

 quent in the Washoe, Trinity and East and West Humboldt Mountains, 

 Nevada ; 6-9,000 feet altitude ; April- July. (840.) 



Var. Somewhat taller, 10-12' high, with the flowers more loosely pani- 

 cled; but for the obtuse leaves, approaching the smaller forms of ilf. Sibirica. 

 East Humboldt Mountains, Nevada ; 7,000 feet altitude; July. (841.) 



Mertensia Sibieica, Don. Gray, I. c, 340. Usually tall, 1-5° high, 

 glaucescent, glabrous or subpubescent ; cauline leaves ovate or ovate-lanceo- 

 late or often oblong-lanceolate, acute or acuminate ; calyx 5-parted, the lobes 

 oblong or oblong-linear, obtuse, ciliate, 2-4-times shorter than the tube of 

 the corolla, which is sparingly pilose or almost glabrous within ; limb of the 

 corolla 5-cleft, more than half longer than the tube; filaments dilated, shorter 

 than the anthers. — Mostly confined to the banks of mountain-streams, and 

 quite variable ; the taller specimens have often the leaves 6' or more in 

 length and 2-3' broad, more or less petioled ; in the lower ones they are 

 more usually oblong-lanceolate and mostly sessile ; panicles loose ; pubescence 

 as in the last ; corolla 4-6" in length. Rocky Mountains of Colorado and 

 Wyoming, and probably northward. In the East and West Humboldt Moun- 

 tains, Nevada, and in the Wahsatch and Uintas; 6-9,000 feet altitude; 

 June-August. (842.) 



Meetensia paniculata, Don. Identical in foliage and habit with the 

 last, but distinguished by its general roughness (varying in degree,) and by 

 its lanceolate acute calyx-segments. — The extreme forms of the two species 

 are sufficiently distinct, but numerous intermediate states can be referred as 

 well to one as the other. All the specimens of the collection with elongated 

 and acute calyx-lobes are placed here, whatever the degree of pubescence. 

 Shore of Lake Superior, Rocky Mountains of Colorado and Wyoming, and 

 northward ; Behring Strait. Battle and Toyabe Mountains, Nevada, and 

 in the Wahsatch and Uintas ; 5-7,000 feet altitude ; May-August. (843.) 



Var. NIVALIS. A reduced alpine form, 3-6' high ; hirsutely pubescent 

 throughout, especially so upon the oblong-lanceolate calyx-lobes ; leaves 

 oblong, acute, the lowest petioled, the uppermost ovate and clasping. Uinta 

 Mountains ; 10-12,000 feet altitude ; August. (844.) 



Meetensia bketistyla. Low (4-10',) pubescent with short appressed 

 rigid hairs, the lower surface of the leaves excepted ; leaves oblong or oblong- 

 lanceolate or oblanceolate, very obtuse ; flowers in a loose panicle ; calyx 



