Solidago rigida subsp. rigida

Endemic
Synonyms: Oligoneuron grandiflorum (Rafinesque) Small Solidago grandiflora Rafinesque Solidago rigida var. magna Clute Solidago rigida var. microcephala de Candolle
Treatment appears in FNA Volume 20. Treatment on page 163. Mentioned on page 164.

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

V20-356-distribution-map.gif

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.
John C. Semple +  and Rachel E. Cook +
Linnaeus +
Aster sect. Ptarmicoidei +
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. +  and Wis. +
0–400+ m +
Prairies, glades, oak savannas, dry open areas especially on calcareous soils, disturbed grounds (railroads, etc.) +
Flowering Aug–Oct. +
Oligoneuron grandiflorum +, Solidago grandiflora +, Solidago rigida var. magna +  and Solidago rigida var. microcephala +
Solidago rigida subsp. rigida +
Solidago rigida +
subspecies +