familyAsteraceae
genusSolidago
sectionSolidago sect. Ptarmicoidei
speciesSolidago rigida
subspeciesSolidago rigida subsp. rigida
Solidago rigida subsp. rigida
Endemic
Synonyms: Oligoneuron grandiflorum (Rafinesque) Small Solidago grandiflora Rafinesque Solidago rigida var. magna Clute Solidago rigida var. microcephala de Candolle
Stems (robust) 60–150 cm, coarsely hispid (10–70 hairs/mm2) (hairs stiff). Leaves: basal large, to 250 × 100 mm; faces moderately to densely hispid (7–50 hairs/mm2); mid to distal ovate, thick. Heads usually in loose, open, spreading, flat-topped arrays, 3–20(–34) × (4.5–)6.5–18(–27) cm. Peduncles densely hispido-strigose. Phyllaries: 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. Cypselae glabrous. 2n = 18, 36.
Phenology: Flowering Aug–Oct.
Habitat: Prairies, glades, oak savannas, dry open areas especially on calcareous soils, disturbed grounds (railroads, etc.)
Elevation: 0–400+ m
Distribution
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.
Discussion
Selected References
None.
Lower Taxa
None.