Stems: short, densely leafy. Leaves: fan-shaped in outline, parted into linear spatulate lobes on long petioles; herbage hirsute and rather viscidulous. Flowers: rays forty to sixty, white; disk-flowers yellow.
This Fleabane is very like a large common daisy, for it has many white rays and a big yellow centre. Most of its leaves grow out from the base, and are much cut and quite fern-like. It is found at an altitude of 7000 feet, and especially along the edge of glacial streams, though it grows also on the lower alpine meadows.
The most conspicuous difference between Asters and Fleabanes is that the latter have very numerous narrow rays, while the rays of the former are slightly broader and much fewer in number.
Erigeron multifidus, or Daisy Fleabane, has numerous slender hairy stems and leaves crowded on the crowns of the caudex, twice-ternately parted into narrow lobes. The flowers are solitary at the ends of the nearly leafless stems; they are usually white, but occasionally violet.
Erigeron melanocephalns, or Black-woolly Fleabane, has stems covered with purplish-black hairs. The lower leaves are numerous elliptic and nearly smooth, while the stem leaves are very hairy. The involucre is thickly covered with purplish-black wool and the fifty to sixty rays are white or pinkish.
Erigeron caespitosns, or Tufted Fleabane, has very tufted white-haired stems growing from a deep root. The leaves are also white-hairy narrow and have even margins, the involucre is hemispheric, its bracts narrow pointed and white-hairy, and the forty to sixty rays are white or pinkish.