56 BOTANY. 



tufted root; petioles 1-4 inches long, leaves 3-5 parted, each segment 

 lanceolate-cuneate and trifid ; involucre sessile, its leaflets 3-5 cleft ; car- 

 pels tailless, compressed, oval, and glabrous. Entire plant more or less 

 densely covered with gray hairs ; flowers white. Found in America most 

 commonly from Canada north, but growing in Colorado on alpine summits, 

 where, according to Mr. J. M. Coulter, it has been found at an elevation of 

 13,500 feet. (102 a.) 



Anemone cylindrica, Gray. — Willow Springs, Ariz. ; rare there and 

 probably by seme accident introduced. (247.) 



Myosurus minimus, L — Colorado; altitude, 8,000 feet and upwards; 

 specimens much dwarfed. (169.) 



Ranunculus aquatilis, L., var. stag-natilis, DC. — Denver. Flowers 

 almost as large as B. Purshii, Richardson, var. trichophyllus, Chaix. Twin 

 Lakes, Colo., at 9,500 feet altitude. (113 and 115.) 



Ranunculus Flammula, L., var. reptans, Gray. — Colorado. (172 

 and 173.) 



Ranunculus hydrocharoides, Gray. (PI. Thurb. p. ^06.) — Glabrous 

 throughout, flowering branches erect, numerous stolons branching off in all 

 directions and rooting; lower leaves heart-shaped, and entire, or nearly so; 

 petioles 2-3' long, expanding and sheathing at the base ; upper leaves 

 lanceolate ; peduncles about as long as the upper leaves, from opposite the 

 axils of which they arise ; sepals round, petals 3", tapering into a claw, 

 which has a conspicuous gland below a small sinus ; stamens about 25 ; 

 carpels 15-20, forming a head 2-3" in diameter. Willow Springs, Ariz., 

 growing in water at a temperature of 50° Fahr. at an elevation of 7,202 

 feet. A most interesting species, which I believe has not hitherto been 

 taken so far north. (217.) 



Ranunculus Cymbalaria, Pursh. — In Colorado grows everywhere in 

 low moist ground, evincing, however, a marked choice for alkaline soils, but 

 still flourishing in the freshest of snow water ; altitude, 5,000 to 10,000 feet. 



From Saguache, in the San Luis Valley, we have a form with an erect, 

 stout scape, bearing three or four flowers, having thicker and larger. leaves, 

 and manifesting little or no tendency to produce stolons. 



At Santa Fc4, N. Mex., I collected it (10) at what I presume is the 



