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FNA | Family List | FNA Vol. 20 | Asteraceae | Erigeron

29a. Erigeron pumilus Nuttall var. intermedius Cronquist, Brittonia. 6: 180. 1947.

Erigeron pumilus subsp. intermedius Cronquist; E. pumilus var. gracilior Cronquist

Ray corollas usually pink, sometimes white. Disc corollas: indurate portions relatively dull, glabrous or slightly puberulent. Pappi: outer of coarse bristles or setiform scales, inner of 12–16(–20) bristles. 2n = 18, 36.

Flowering May–Aug. Moist or dry soil, meadows or sagebrush; 1200–2300(–2800) m; B.C.; Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Variety gracilior was described by A. Cronquist (1947) as "plants slender, the larger stems either not more than 1.5 mm thick near the base or bearing fewer than 5 heads." Such plants occur mostly in the southern part of the variety’s range (mostly Idaho and Oregon, some in Washington); while the gracile tendency seems real, many arbitrary identifications must be made if two taxa are recognized.


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