Difference between revisions of "Solidago rigida subsp. humilis"
Canad. J. Bot. 66: 1805. 1988.
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Revision as of 18:42, 24 September 2019
Stems 40–70(–90) cm, densely (less coarsely) hispid (30–70 hairs/mm2). Leaves: basal (often numerous), small, rarely exceeding 120 × 50 mm; faces densely (less coarsely) hispid (20–60 hairs/mm2); mid to distal lanceolate to ovate. Heads in tightly clumped, usually rounded arrays, 3–13(–23.5) × (3.5–)6–13(–18) cm. Peduncles densely hispido-strigose. Phyllaries: outer densely strigillose; inner often more nearly linear, 0.7–1.2 mm wide, conspicuously strigillose. Disc corolla lobes shallow, 0.9–1.2(–1.3) mm. Cypselae usually strigillose distally. 2n = 18.
Phenology: Flowering Aug–Oct.
Habitat: Dry to mesic, often sandy or eroded, soils, prairies and open meadows, open grassy clearings in woods
Elevation: 200–1900+ m
Distribution
Alta., Man., Ont., Sask., Colo., Ill., Ind., Iowa, Kans., Mich., Mo., Mont., Nebr., N.Mex., N.Dak., Okla., S.Dak., Tex., Wis., Wyo.
Discussion
Subspecies humilis is introduced in Illinois, Indiana, Michigan, and Ontario. The involucres are slightly smaller than those of typical variety.
Selected References
None.