l68 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Ranunculus orthorhynchus Hook. Fl. Bor. Am. i: 21 [Svn. Fl. 



I': 38]. 



A tall plant somewhat resembling R. macranthiis, but with smaller 

 flowers and a slender straight beak as long as the achene. A rare 

 plant. 



Yellowstone Park : 1885, Tzi'eedy. 



Batrachium trichophyllum (Chaix) Bossch. Prod. Fl. Bat. 5 [111. 



Fl. 2: 84]; Ranimciilus trichophylliis Chaix; Vill. Hist. PI. 



Daupli. I : 335 : Raminculus aqtiatiUs tn'chophyllus Gray, Man. 



Ed. 5, 40 [Syn. Fl. i' : 21 : Man. R. M. 6, in part; Bot. Cal. i : 



5] ; var. stag-natilis Coulter, Man. R. M. 6. 



In Coulter's manual the leaves are said to collapse when withdrawn 

 from the water, which is seldom the case. B. tn'chophylhiiii seems 

 to be described under the var. stagnaiilis, w^hile the next species is 

 characterized as var. trichofhyllus. Ramincuhis aqtiatilis stagnatilis 

 DC. {R. circinatits Sibth., R, divari'catiis Schrank) has sessile 

 leaves and large flowers and is, as far as I know, not found in Mon- 

 tana. B. trichofhylhim grows in streams, up to an altitude of 

 2500 m. 



Montana: Cliff Lake, Madison Co., July 27, iSg^], Rydbcrg- d- 

 Besscy, ^ijj ; Bozeman, 1896, Flodman, 4S1; Deer Lodge, J//55 

 Emma Ware: Helena, 1892, F. D. Kchcy ; Sun River, 1883, 

 Scribucr, 2: Little Belt Mts., 1882, Canby. 



Batrachium flaccidum (Pers.) Rupr. Fl. Cauc.15; Ranuncuhts 



liaccidiis Pers. ; Usteri, Ann. Bot. 5'^ : 38 ; Ranunctdiis aquatilis 



jlaccidiis Gray, Syn. Fl. i' : 21 : var. trichophylliis Coulter, Man. 



R. M. 6. 



In streams, up to an altitude of 2500 m. The stem is genertilly 



thicker than in the preceding, somewhat fleshy, and the divisions of 



the leaves very long and flabby. 



Montana: Jack Creek, July 15, 1:897, Rydbcrg & Bcsscy, 4133. 

 Yellowstone Park : 1885, Tzvcedy, po6 : Mammoth Hot Springs, 



1889, R. W. Dew art. 



* Batrachium confervoides Fries, Bot. Not. 1845: 121 ; Ranunculus 

 confcrvoidcs Fries, Sum. Veg. Scand. I : 139: Ranunculus aqua- 

 tilis confcrvotdcs Gray, S}^!. Fl. i': 21. 

 The whole plant more delicate than the preceding ; flowers very 



small, about 10 mm. in diameter, with few stamens; leaves filiform 



