374 NORTH AMERICAN FLORA [VoLumE 22 
19. Drymocallis incisa (Lindl.) Rydberg, sp. nov. 
Poteniilla giandulosa incisa Lindl. Bot. Reg. 23: Al. 1973. 1837. 
Drymocallis glandulosa wncisa Rydb. Mem. Dep. Bot. Columbia Univ. 2: 199. 1898. 
Cespitose ; stems 3-5 dm. high, finely pubescent or almost glabrous, mostly straw- 
colored ; basal leaves about 1 dm. long, with 7-9 leaflets; petioles with fine soft spread- 
ing hairs; terminal leaflet rhombic-obovate, about 3 cm. long and 2cm. wide, usually 
acute, sparingly pubescent or glabrate above, softly pubescent beneath, only sparingly 
glandular, deeply doubly serrate or incised, with lanceolate teeth; lower leaflets more 
obovate and smaller; upper stem-leaves reduced, often 3-foliolate; inflorescence open ; 
bractlets linear-lanceolate, 3-4 mm. long; sepals lanceolate, acuminate, 5-6 mm. long, in 
fruit 8-9 mm. long; petals rounded-obovate, often pale-yellow, about 6 mm. long; stamens 
about 25; pistils numerous; styles fusiform. 
TYPE LOCALITY: California. 
DISTRIBUTION : Meadows, from Washington and Idaho to California and Nevada. 
ILLUSTRATION : Lindl. Bot. Reg. 23: pl. 1977. 
20. Drymocallis Wrangelliana (Fisch. & Avé-Lall.) Rydb. Mem. Dep. 
Bot. Columbia Univ. 2: 201. 1898. 
Potentilla Wrangelliana Fisch. & Avé-Lall. Ind. Sem. Hort. Petrop. 7: 54. 1840. 
Stem tall, 4-8 dm. high, striate, leafy, usually dichotomously branched, densely 
glandular- or viscid-villous with long hairs; lower stipules ovate-lanceolate, the upper 
ovate, small, 3-10 mm. long, usually entire; basal leaves with long-hairy petioles 2-10 
cm. long, pinnate; leaflets 7-9, obovate or nearly orbicular, the upper often 5-6 cm. 
long, all more or less doubly serrate with ovate-mucronate teeth, sparingly hairy on 
both sides; stem-leaves short-petioled and with fewer leaflets, which, however, are not 
much reduced in size, the upper ones only trifoliolate and often opposite; cyme open, 
usually dichotomously branched with a short-pedicelled or subsessile flower in the angle ; 
pedicels always short, or scarcely any; hypanthium glandular-hirsute, enlarged in fruit, 
8-9 mm. broad; bractlets linear-oblong, acute, 4-5 mm. long, shorter than the sepals; 
sepals about 5-6 mm. long in flower and 8-10 mm. in fruit, oval, abruptly contracted into 
a mucronate tip, more reticulate-veiny and thinner than in D. glandulosa; petals ochro- 
Jeucous, broadly oval, about the length of the calyx; stamens about 25; pistils many ; styles 
fusiform. 
TYPE LOCALITY: Russian Settlement, California. 
DISTRIBUTION : Coast ranges of California, mostly in the chapparal. 
ILLUSTRATIONS: Lehm. Rev. Potent. #/. 19; Mem. Dep. Bot. Columbia Univ. 2: pl. 108. 
21. Drymocallis oregana (Nutt.) Rydberg, sp. nov. 
Potentilla oregana Nutt.; T. & G. Fl. N, Am, 1: 446, asasynonym. 1840. 
Stem 6-7 dm. high, usually densely viscid-villous with long yellowish hairs, simple 
below; basal leaves 1.5-2 dm. long, with about 9 leaflets; petioles and rachis long- 
villous with yellowish hairs ; terminal leaflets rounded-obovate with cuneate base, 3-4 cm. 
long, 2-3 cm. wide, rather densely pubescent on both sides, doubly serrate with ovate teeth ; 
the lateral leaflets somewhat smaller and more rounded ; lower stem-leaves similar ; upper 
ones reduced and with 3 oblanceolate leaflets; bractlets oblong-lanceolate, 4-5 mm. long; 
sepals ovate, mucronate, 5-6 mm. long, in fruit 8-10 mm.; petals yellow, 5-7 mm. long, 
broadly oval; stamens about 25; pistils many; styles fusiform. 
Type collected on the Columbia River, Nuiall (herb. Columbia Univ.). 
DISTRIBUTION : Dry copses and sand bars, from the Mackenzie and British Columbia to Oregon 
and Idaho. 
22. Drymocallis laxiflora Rydberg, sp. nov. 
. Potentilla reflexa Rydb. Bull. Torrey Club 23: 247. _ 1896. Not P. reflexa Greene. 1896. 
Drymocallis reflexa Rydb. Mem. Dep. Bot. Columbia Univ. 2: 203, in part. 1898. 
Stems slender, branched, more or less tinged with purple, 3-4 dm. high, minutely 
viscid-villous ; stipules ovate, entire or toothed; basal leaves several, rather short-petioled, 
