474 MEMOIRS OF THE ^'E^V' YORK BOTANICAL GARDEN. 



change. As the following does not agree with any of the species 

 acknowledged by him, it should be inserted before Trollius albiflorus : 



*Caltha uniflora. 



Ahnost acaulescent, bright green, 5—8 cm. high, with a single ter- 

 minal flower; stipules membranous; basal leaves with petioles 

 1-1.5 cm. long, the blade 1.5-2 cm. long, oval, obtuse, moderately 

 thick, indistinctly veined, subentire, cordate at the base, the basal 

 lobes rounded, but with an open sinus, the single stem-leaf similar, 

 but smaller, or none ; sepals about 10, oblong or elliptic, bluish and 

 distinctl}^ veiny beneath, whitish or straw-color above, obtuse, 12-15 

 mm, long; stamens about equalling the pistils; filaments flattened 

 and broadened above, 2-3 times as long as the anthers. 



A delicate plant, evidently nearest related to C. rotundifolia, but 

 distinguished by the single terminal flower, and the small delicate 

 leaves with their open sinuses. In wet places near the snow, at an 

 altitude of 3000-3300 m. 



Montana : Ha3stack Peak, 1899, Peter Koch. 



On page 155, before Delphinium scopulorum, insert: 



* Delphinium Ajacis L. Sp. Pi. 351 [III.FI.2: 59; Syn. Fl. i' : 45]. 

 An introduced species with a solitary pistil and tinelv dissected 



leaves. It is often confused with D. Consolida, from w hich it dif- 

 fers in the pubescent pod. Escaped from cultivation. 



Montana: St. Ignatius Mission, 1899,,/. W. Blaukliiship. 



On page 162, before Ranunculus hyperboreus, insert: 



* Ranunculus limosus Nutt. : Torr. & Gray, Fl. N. Am. i : 20. 



I think that this species is distinct from R. Piirshii\ differing not 

 only in the dense hairiness, which is especially marked when young, 

 but also in the smaller flowers, the small leaves, the short subulate 

 blunt beak of achene, and in rooting more freely and producing 

 plantlets at the nodes. In muddy places. 



Montana: Belt River, 1888, R. S. Williams. 



On page 164, before Ranunculus alpeophilus, insert : 



* Ranunculus eximius Greene, Erythea, 3 : 19. 



Like R. sa.xicola; but the flowers much larger, 2 cm. broad, the 

 very broad petals overlapping each other and forming an almost 

 circular corolla. It grows at an altitude of about 2500 m. 



Montana : Head of Stillwater, 1899, Refer Koc/i. 



On page 168, before Batrachium trichophyllum. insert: 



* Batrachium aquatile (L.) Wimm. Fl. Schles. 8: RaiiKuculiis 



aquatilis L. Sp. PI. 556 [Syn. Fl. i' : 21]. 



