Eriophyllum tridactylum

Eriophyllum tridactylum Rydberg, sp. nov
A low shrub, about 3 dm. high, with numerous erect stout white-tomentose branches; leaves 1-3 cm. long, cuneate or oblanceolate in outline, cleft into 3 lanceolate divisions above the middle, white-tomentose on both sides but somewhat greener above, the middle division sometimes 3-lobed; heads in small corymbs at the ends of the branches; involucre about 4 mm. high and 3 mm. broad; bracts about 5, densely tomentose, oval; ray-flowers about as many; ligules 3.5-4 mm. long, nearly 3 mm. wide; disk-corollas about 3 mm. long; tube glandular-hispid, much shorter than the slightly puberulent throat; achenes 2 mm. long, sparingly hispidulous; squamellae 6-8, oblong, nearly 1 mm. long.
Type collected in the Yosemite Valley, California, July 1871, Harry Edwards (herb. N. Y. Bot. Gard.).
Distribution: Central and southern California.