Largeleaf Avens

Geum perincisum Rydberg, sp. nov
Perennial, with a short rootstock; stem strict, 4—6 dm. high, conspicuously hirsute with divaricate hairs; basal leaves interruptedly pinnate; principal leaflets 5-11, 1-6 cm. long, obovate or rhombic-obovate, or the terminal one ovate or cordate and then deeply 3-cleft, all more or less cleft and incised with lanceolate teeth, densely hirsute beneath, less densely so above; stipules of the stem-leaves ovate, incised, rather large; upper stem-leaves short-petioled or subsessile, 3-foliolate; leaflets oblanceolate, deeply incised or laciniate; inflorescence open, the bracts linear or with linear lobes; bractlets linear, about 1 mm. long or less; sepals ovatetriangular, 3 mm. long, soon reflexed; petals paleyellow, oval or obovate, about 5 mm. long; receptacle densely short-hairy; lower internode of the style about 4 mm. long, glandularpruinose; upper internode somewhat more than 1 mm. long, sparingly hispidulous below; body of the achenes pubescent and hispid above.
Type collected by the roadside, Cave Avenue, Banff, Alberta, W. C. McCalla 2074 (herb. N. Y.
Bot. Gard.).
Distribution: Yukon Territory and the Mackenzie River to Alberta and Michigan.

Geum oregonense (Scheutz) Rydb. Bull. Torrey
Club 25: 56. 1898.
Geum urbanum oregonense Scheutz, Nova Acta Soc. Sci. Upsal. III. 7 fl : 26. 1870.
Perennial, with a short rootstock; stem 4-7 dm. high, densely hirsute with yellowish hairs; basal leaves interruptedly lyrate-pinnate; rachis densely hirsute; principal leaflets 5-9; 405
terminal leaflet reniform or rounded, 5-10 cm. broad, doubly dentate; lateral leaflets obovate or cuneate, 1-5 cm. long, more or less hirsute on both sides; upper stem-leaves small, usually ternate or 3-cleft with obovate or oblanceolate divisions, or those of the open inflorescence simple; bractlets linear, one-fourth to onethird as long as the ovatetriangular sepals, which are 3-4 mm. long; petals paleyellow, 4-5 mm. long, obovate; fruiting head about 15 mm. in diameter; receptacle short-hair}'-; body of the achenes appressed-pubescent, yellowish-hirsute above; lower internode of the style 6 mm. long, glandular-granuliferous; upper internode a little more than 1 mm. long, sparingly short-hairy below.
Type locality: Oregon region of North America.
Distribution: Meadows, especially in the mountains, from the Mackenzie River to Minnesota, Colorado, California, and British Columbia.
Geum macrophyllum X oregonense. With the more numerous and smaller flowers of G. oregonense and the long yellow pubescence characteristic of that species, but the stem more leafy and the upper stem-leaves with the broad lobes characteristic of G. macrophyllum. Scaget Valley, British Columbia, June 25, 1905, J, M. Macoun 69914 (labeled G. oregonense). Distribution: Yellowstone Park, Montana, and British Columbia.
Geum oregonense X strictum. Resembling G. oregonense in habit, leaf -form, long yellow pubescence, and structure of the styles, but more robust and with the broad, large, rounded petals of G. strictum. Logan, Utah, May 23, 1910, George L. Zundel 206 (in part). Distribution: Utah and Montana.