Erigeron strigosus - (image 1 of 3)
Taxonomy
Family: Asteraceae
Habitat
Meadows, fields, disturbed areas.
Associates
Distribution
Most of the U.S. and southern Canada.
Morphology
Annual or sometimes biennial; stems mostly 30-70 cm, sparsely leafy, usually hairy with hairs ascending or appressed; basal leaves mostly oblanceolate to elliptic, entire or toothed, up to 15 cm long including the petiole; cauline leaves linear to lanceolate, mostly entire; heads several to many; involucre 2-5 mm, obscurely glandular and short-hairy; disk 5-12 mm wide; rays 50-100, white or sometimes pinkish or bluish, to 6 mm long and 0.4-1.0 mm wide, sometimes much reduced; disk corollas 1.5-2.5 mm; pappus of disk flowers double, with 10-15 bristles and several very short, slender scales; pappus of ray flowers of short scales only, under 1 mm.
Notes
Flowers June to July, sometimes later
Wetland indicator: FACU
These plants were found growing in a sand prairie in Ohio. This species is similar to E. annuus but usually shorter and with fewer leaves that tend to be more narrow especially on the upper part of the stem. There are several named varieties, some of which are not recognized by all authors.
References
Gleason, Henry A.
and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States
and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
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Michael Hough © 2018 |