218 American Species of the Genus Anemone. 



Rocky Mts. (Drummond) ; Kicking Horse Lake, Lake Agnes, 

 National Park, Mt. Queest, Kootanie Lake, and Selkirk Mts. 

 (Macoun); Cascade Mts. (Lyell); near Lytton (Dieck, according to 

 Freyn) ; Goose Creek Mts. (Bowman) ; Kootanie Pass (Dawson). 

 Type of Anemone occidentalis, S. Wats, in Herb. Gray. 



2. ANEMONE, L. Gen. PL, 163 (1737). 



* Aclienia woolly-pubescent, numerous, densely capitate. 



f Plants slender, usually low, 1-2-flowered. 



% Stems mostly single from a tuberous root. 



o Flowers always solitary. 



-f- Radical leaves or some of them simply ternate. 



1. Anemone decapetala, Aid. 



A. decapetala, Ard.. Spec. Bot., ii, xxvii, t. 12 (1764). 

 A. trilobata, Juss., Ann. Mus., iii, 247, t. 21, f. 3 (1804). 

 A. heterophylla, Nutt. in T. & GL PI. N. A., i, 12 (1838). 

 A. Berlandieri, Pritz., Linnsea, 1841, 628. 



A. Caroliniana, var. heterophylla, T. & G-. Fl. N. A., i, 12 (1838). 

 A. decapetala, var. heterophylla, Brit. & Rusby, Trans. N. Y. Ac. Sci., vii, 7 

 (1887). 



Appressed pubescent or glabrate, 10-30 cm. high. Stems single or very 

 rarely two together from a globose or cylindric tuber ; radical leaves slender- 

 petioled, ternate, the divisions broad, ovate, oval or obovate, stalked or rarely 

 sessile, thick, creuate or incised-obtuse, 1^-2 cm. long ; or some of them 

 divided into linear-oblong segments ; leaves of the involucre on short, broad 

 petioles, cleft into linear or oblong-linear lobes ; flower blue, 2-3 cm. broad 

 sepals usually 10-20, linear-oblong, obtuse, glabrous ; peduncle much elongated 

 in fruit ; head of fruit cylindric, ^—2 cm. long ; style subulate, about 1 mm. 

 long. 



Distrib. Southern Brazil, Uruguay, the Argentine Republic, 

 Mexico, and the southern United States. Brazil: (Arduino in 

 Herb. Linn.); Minas-Geraes (Regnell); Rio Grande do Sul (St 

 Hilaire). Uruguay: Montevideo (Courbon, 119). Argentine: La 

 Plata (Commerson); Buenos Ayres (Tweedie). Mexico: Chihua- 

 hua (Torrey fide Hemsley). United States: Arkansas (Nuttall); 

 Texas (Berlandier, 193, 1453, 1891; Reverchon, 4; Wright; Miss 

 Croft; Merrill); American Plains (Hall and Harbour, 6; Buckley; 

 Trecul, 1493); Louisiana (Hale); Alabama (Buckley). 



The species shares with a considerable number of other plants the 

 peculiarity of inhabiting the southern United States and Mexico, 

 and extra-tropical eastern South America. 



