MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 109 



94. Potentilla Richardii Lehm. 



Potentilla Rlchardll Lehm. Iiui. Sem. Ilort. Bot. Hamb. 1849 : 6. 1849. 



Lehm. Stirp. Pug. 9:1; Eev. Pot. 26 ; Hemsley, Biol. Cent. Am. 1 : 376 ; Walp. Ann. 2 : 471. 



Potentilla ancistifolia Galeotti, Coll. PI. Mex. No. 3078, fide Lehmann, I. c. 



Illustration : Lehm. Eev. Pot. pi. 5, f. 1. 



Stems short, ascending or erect, few-flowered, hirsute, with spreading hairs. Basal leaves pin- 

 nate ; leaflets about 3 pairs, hairy, with few spreading hairs, cuneate-flabelliform, incised or deeply 

 5-7-toothed at the end with broadly oblong teeth. Petals yellow, obcordate, nearly twice as long as 

 the sepals. 



Central Mexico : *J. Linden, No. 661 (Orizaba); *H. Galeotti, No. 3078. 



95. Potentilla Cascadensis. 



Stem erect or ascending from a perennial rootstock, simple, with 2-3 small leaves, 

 slightly strigose or glabrate, strict. Stipules very large, broadly ovate, 10-15 mm. long, 

 the lower ones brown and scarious and covering the ascending rootstock. Basal leaves 

 pinnate; leaflets 3-6 pairs, slightly silky-strigose or in age glabrate, 1-2 cm. long, 

 broadly cuneate to nearly orbicular in outline, deeply incised with ovate teeth at the 

 apex. Stem leaves small, with 1-2 pairs of leaflets. Hypanthium silky-hirsute or strigose, 

 in fruit about 1 cm. in diameter ; bractlets oblong to oval, two-thirds the length of the 

 broadly lanceolate acute sepals. Petals yellow, obcordate, about a fourth exceeding the 

 sepals. 



I have had much doubt as to whether this plant is or is not a valid species. It is 

 intermediate between 7-" Plattenxis, Dr^immondii, multijuga and Breiveri. In leaf form 

 and general habit it is nearest to F. Breweri, from which it differs in the kind of pubes- 

 cence, viz., in P. Cascaden.'^iv silky and mostly appressed, in P. Breweri woolly. It difibrs 

 from P. Plattends in the broader and less lobed leaflets, the more upright and less leafly 

 stem and larger flowers. It differs from P. multijuga in the small number of leaflets 

 and the larger flowers ; from P. Drummondii in the smaller size of the leaflets. The 

 specimens examined are : 



Washington: Suksdorf, No. 2165, 1892 (type; Chiquash Mts. of the Cascades). 



Culiforriia: J. G. Lemmon, No. 84, 1875, and Nos. 966 and 969, 1875 (Lassen's Peak). 



British djlumhia: Macoun, No. 7310, 1889. 



96. Potentilla Drummondii Lehm. 



Potentilla Drummondii Lehm. Stirp. Pug. 2 : 9. 1830. 



Eat. Man. Ed. 7: 458; Torr. & Gray, Fl. N. Am. 1: 439; Eat. & Wright, N. Am. 

 Bot. 374. 



