American Species of the Genus Anemone. 221 



Clear Water (Spaulding); Mt. Adams (Henderson) ; Siskiyou Mts. 

 (L. W. Lee). California : (Kellogg and Harford, 4) ; Sierra Co. 

 (Lemmon, 992); Upper Sacramento River and Mt. Tamalpais 

 (Greene); Redwoods (Bolander ; San Geronirao Ranch (Bigelow). 

 I am regarding the Californian and Oregon species as the same 

 with some hesitation, but the specimens which I have seen do not 

 afford me sufficient characters for their separation, and have followed 

 Professor Greene (Pittonia, i, 48) in reducing A. Oregana to A. 

 Gy-ayii. 



16. Anemone Lyallii, n. sp. 



Slender, erect, nearly glabrous throughout, 10-40 cm. high, from a short 

 horizontal rootstock. Radical leaves not seen ; leaves of the involucre on very- 

 slender petioles 1.5-3 cm. long, 3-divided, the divisions sessile, ovate, or the 

 terminal one sometimes nearly orbicular, dentate-crenate, or sometimes incised, 

 acute, or obtuse, very thin, more or less ciliate along the margins ; flowers 

 solitary, white, about 1 cm. broad, its peduncle slightly exceeding the petioles 

 of the involucral leaves ; sepals about 5, oval-oblong, obtuse ; young achenia 

 quite densely strigose-pubescent. 



Distrib. Sumass Woods, Lower Frazer River (Lyall) ; Washing- 

 ton (Suksdorf); Cascade Mts. (Howell); Victoria (Jas. Fletcher); 

 Vancouver Island (Macoun); Wallamette Valley (Cusick); near 

 Portland (Henderson) ; Salmon River, B C. (Dawson). 



Lyall's specimens preserved in Herb. Kew represent two quite 

 different forms of leaves, but they evidently belong to the same 

 species. 



f f Plants tall, 2-several-flowered, the lateral peduncles involucellate. 

 X Involucels of the lateral peduncles distant from the main involucre. 



o North American. 



17. Anemone Canadensis, L. 



A. Canadensis, L. Syst., Ed. 12, iii, App. 231 (1768). 



A. Pennsylvanica, L. Mant., ii, 247 (1771). 



A. irregularis, Lam. Encycl., i, 167 (1783), fide S. Watson. 



A. aconitifolia, Michx., Fl. Bor. Am., i, 320 (1803). 



A. Laxmanni, Steud. Nom., Ed. 2, i, 96. 



30-60 cm, high, somewhat hairy, especially on the lower surfaces of the 

 leaves, branching at the involucre. Radical leaves long-petioled, broader 

 than long, 3-5 parted, the divisions broad, oblong, acute, variously cleft and 

 toothed, those of both primary and secondary involucres similar, sessile; 

 sepals white, oblong, obtuse ; flower 2^-3^ cm. broad ; head of fruit globose ; 

 achenia flat, nearly orbicular, pubescent, or nearly glabrous at maturity, tip- 

 ped with the stout, persistent style which is about their own length. 



