Solidago rigida subsp. rigida
Juss. ex DC.]
John C. Semple, Rachel E. Cook in Flora of North America (vol. 20)
(robust) 60-150 cm, coarsely hispid (10-70 hairs/mm
) (hairs stiff).
basal large, to 250 × 100 mm; faces moderately to densely hispid (7-50 hairs/mm
); mid to distal ovate, thick.
usually in loose, open, spreading, flat-topped arrays, 3-20(-34) × (4.5-)6.5-18(-27) cm.
outer hairy; inner oblong to slightly spatulate, 0.8-1.4 mm wide, glabrate to puberulent.
Disc corolla lobes
deep, 1.1-1.6 mm.
= 18, 36. Flowering Aug-Oct. Prairies, glades, oak savannas, dry open areas especially on calcareous soils, disturbed grounds (railroads, etc.); 0-400+ m; Ont.; Ark., Conn., Del., Ill., Ind., Iowa, Kans., Ky., Md., Mass., Mich., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Va., W.Va., Wis.
From Flora of Indiana (1940) by Charles C. Deam
Infrequent in prairie and decadent prairie habitats in northern Indiana and very local in southern Indiana in similar habitats. Now found mostly along roads and railroads.
Indiana Coefficient of Conservatism: C = 7
Wetland Indicator Status: FACU
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