364 NORTH AMERICAN FLORA [VoLuME 22: 
4, Argentina occidentalis Rydberg, sp. nov. 
Potentilla pacifica Howell, Fl. NW. Am. 1: 179, in part. 1898. 
Basal leaves 1-2 dm. long, usually spreading; rachis appressed-pubescent or glabrous; 
larger leaflets 11-19, obovate, rounded at the apex, with broad teeth, glabrous or nearly 
so above, white-tomentose and silky beneath; the upper 1.5-4 cm. long; stolons 1-6 dm. 
long, usually glabrous; peduncles 1-1.5 dm. long, sparingly silky; hypanthium sparingly 
silky or nearly glabrous, about 7 mm. wide; bractlets elliptic or oblong, 4-5 mm. long; 
sepals about 6 mm. long, ovate; petals suborbicular, 10-12 mm. long; achenes 2 mm. 
long, brown, rounded on the back, neither grooved nor corky. 
Type collected at Suisun, Solano County, California, in 1903, C. F. Baker 3217 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION : Alaska to California, near the coast, mostly in salt marshes. 
5. Argentina Babcockiana Rydberg, sp. nov. 
Basal leaves 6-15 cm. long, dark-green and glabrous above, white-silky beneath ; 
rachis appressed-silky ; larger leaflets 15-21, oblanceolate, rounded at the apex, sharply 
serrate with narrowly lanceolate teeth directed forward; the upper 1.5-2.5 cm. long with 
over 20 teeth; stolons 1-9 dm. long, sparingly appressed-silky or glabrous; peduncles. 
4-7 cm. long, slender, appressed-silky; hypanthium acute at the base, 4 mm. wide; bract- 
lets lanceolate, 5-6 mm. long, equaling or slightly exceeding the ovate-lanceolate sepals; 
petals elliptic, 6-7 mm. long; pistils few; achenes neither grooved nor corky. 
Type collected at Westminster Park, New York, in 1900, Miss £. Babcock (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Type locality and shores of Oneida Lake, 
6. Argentina litoralis Rydberg, sp. nov. 
Basal leaves 1-3 dm. long, ascending, dark-green and glabrous above, white-tomen- 
tose and silky beneath ; rachis glabrous or nearly so; larger leaflets oblanceolate, coarsely 
serrate with triangular-lanceolate teeth, usually acute; the upper leaflet 2-3 cm. long; 
stolons slender, 1-6 dm. long, glabrous or nearly so; peduncles 5-20 cm. long, glabrous 
or sparingly silky; hypanthium 6-7 mm. wide, silky, rounded at the base; bractlets and 
sepals subequal, lanceolate or ovate-lanceolate, 5-6 mm. long; petals elliptic to oval, 
8-10 mm. long; achenes 2 mm. long, brown, rounded on the back, neither corky nor 
grooved. 
Type collected near the sea at Yarmouth, Nova Scotia, in 1901, Howe & Lang 1 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION: Along the coast and in salt marshes, from Labrador, Newfoundland, and 
Quebec to Long Island. 
7. Argentina subarctica Rydberg, sp. nov. 
Basal leaves 7-15 cm. long, ascending; rachis silky, with appressed or ascending hairs ; 
Jarger leaflets 15-19, dark-green and sparingly silky above, densely white-silky and tomen- 
tose beneath, deeply serrate with narrowly lanceolate teeth ; the upper leaflet 1.5-2cm. long; 
stolons 1-4dm. long, slender, appressed-silky ; peduncles 5-10 cm. long; hypanthium about 
5 mm. wide, silky and tomentulose, acute at the base; bractlets linear-lanceolate, 3-6 mm. 
long; sepals ovate, 5-6 mm. long; petals oval or suborbicular, about 8mm. long; achenes 
neither grooved nor corky. : 
Type collected on Yukon River, near Palisades, Alaska, in 1903, Arthur Hollick (herb. N. ¥. 
Bot. Gard.) . 
DISTRIBUTION: Alaska and Yukon District; apparently also in the mountains of Idaho and 
Montana. 
8. Argentina Egedii (Wormsk.) Rydb. Mem. Dep. Bot. Columbia 
Univ. 2: 158. 1898. 
Potentilla Egedii Wormsk. Fl. Dan. 927: 5. 1818. 
Potentilla Anserina groenlandica Tratt. Ros. Monog. 4: 13. 1824. 
Potentilla Anserina Egedii T. & G. Fl. N. Am. 1: 444. 1840, 
?Potentilla Anserina concolor Lange, Consp, Fl. Groenl. 234,, 1887. Not P. Axserina concolor 
Seringe. 1825. 
Perennial, with a fascicled root and producing long runners, much smaller in size than 
the other species; leaves 3-5 cm. long, pinnate, with 5-15 leafiets, nearly or perfectly gla- 
