MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 477 



spatulate petals, and red-purple fruit. In woods, up to an altitude of 

 about looo ni. 



Montana: Columbia Falls, 1893, j^. ^. Williams. 



On page 224, before Rosa Sayi, insert: 



Rosa blanda Ait. Hort. Kew. 2: 202 [111. Fl. 2: 229; Man. R. M. 



87]. 



In moist rock}' places, at low altitudes. 



Montana: Columbia Falls, 1895, R. S. Wi/Iiains, pdj. 



On page 226, before Prunus corymbulosa, insert: 



* Prunus emarginata Walp. Rep. 2 : 9 [Bot. Cal. i : 167]. 



The specimens seen from Montana are almost glabrous, with 

 large thin acute leaves, large flowers, and membranous bracts. 

 They may represent a distinct species, but the plant is too little 

 known, and the fruit is lacking. Similar specimens have also been 

 collected in 1896, by Heller, near Lewiston, Idaho (j/oj). 



Montana : Columbia Falls, 1894. R. S. Williams, looj. 



On page 227, before Crataegus rivularis. insert: 



* Sorbus occidentalis (Wats.) Greene, Fl. Fran. 54; Pyrus occiden- 



talis Wats. Proc. Am. Acad. 23: 263; P. sambucifolia Brew. & 



Wats. Bot. Cal. i : 189; not Cham. & Schlecht. 



Distinguished from S. sambucifolia by the smaller inflorescence 

 and the obtuse oblong leaflets. Hillsides and mountains, at an alti- 

 tude of about 2000 m. 



Montana: Essex, 1896, R. S. Williams, io6g. 



On page 243, to the description of Astragalus Macounii, after the 

 words " oval in cross section," add " or somewhat flattened above," 

 and also the following localities : 



Montana : Summit of Great Northern R. R., 1894, and Columbia 

 Falls, 1895, R. S. Williams, 



On page 258, before MALVACEAE, insert : 



* Lathyrus bijugatus White, Bull. Torr. Bot. Club, 21 : 457. 



A species with purple flowers ; leaves with two pairs of thin elliptic 

 to obovate leaflets ; tendrils none or reduced to mere bristles. In 

 meadows, at an altitude of about 1000 m. 



Montana: Columbia Falls, 1895,7?. S. Williams, 10^2. 



After MALVACEAE, insert : 



* Malva parviflora L. Amoen. Acad. 3: 416 [Syn. Fl. i : 298]. 



