1902] ROCKY MOUNTAIN PLANTS 25 



ell, Bull. Torr. Bot. Club 27:87. M. coccinenm dissccUmi Gray, 

 PI. Fendl. 24 ; and PI. Wright. 1:17. 



Malvastrum elatum. — M, coccineum elatiim E. G. Baker, Jour. 

 Bot. 29: 171. — This plant, originally published as a variety, is so 

 different from the true M. cocci7ieum that it is less confusing to 

 consider it a species. It is not only much larger, with broader 

 leaf-segments, but its more erect habit and tendency to panicu- 

 late branching give it the aspect of a Sphaeralcea, Its pubes- 

 cence is less conspicuous, and the carpels not so evidently retic- 

 ulate-veined, and the sepals shorter and more abruptly acute. 

 It occurs very sparingly. I have twice collected it, both times 

 at Evanstbn, Wyoming. 



Cerasus demissa melanocarpa, n, var. — Varying from a 



small shrub to a tree-like one, 4-5 "" high: leaves smooth or 

 nearly so on both sides, the teeth of the fine serration incurved 

 or appressed ; petioles not glandular : raceme of white flowers 

 compact, erect or ascending : fruit when fully mature black. 



The Rocky mountain form of Cerasus demissa is clearly, at least varietally, 

 distinct from the original Nuttallian specimens. NuttalFs specimens from 

 " The plains of the Oregon towards the sea, and at the mouth of the Wahla- 

 met/' differ from the more eastern form in the pubescent leaves which are 

 serrate with straight teeth and with glandular petioles ; more evidently yet in 

 the red fruits which are sweeter and less astringent than the black ones. 



The variety proposed is in many respects intermediate between typical 

 Cerasus virginiana of the eastern states and typical C. demissa of the far 

 west. All the Rocky mountain specimens sttn by me are of this variety. 



Gentiana bracteosa Greene. — In publishing this species 

 (Pitt. 4:180) Professor Greene lays stress upon the narrowness 

 of the leaves, but I am satisfied that this character will not dis- 

 tinguish it from G, Parryi. Some fine specimens collected 

 by Mr, H. N. Wheeler, Camp Albion, Colorado, Aug. 30, 1901, 

 have the floral characters of G, bracteosa, but typical leaves of 

 G. Parryi. Furthermore, in some specimens of G. Parryi the 

 stems in the same clump vary as to the leaves from narrowly 

 oblong to broadly ovate. The species I think will stand, how- 

 ever, on the bract characters, and a peculiarity of the spathace- 

 ous cleft calyx not pointed out by Dr. Greene. The calyx-tube 



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