Solidago rigida

Linnaeus

Sp. Pl. 2: 880. 1753.

Common names: Stiff-leaved goldenrod
Endemic
Synonyms: Aster rigidus (Linnaeus) Kuntze Oligoneuron rigidum (Linnaeus) Small
Treatment appears in FNA Volume 20. Treatment on page 163. Mentioned on page 162, 164, 165.

Plants 30–150 cm; caudices branching, woody. Stems 1–10+, erect, stout, hairy. Leaves: basal and proximal cauline usually present at flowering, abruptly narrowed to long petioles, blades ovate to rhombic, 80–200 × 24–50 mm, firm, flat, margins entire to crenate, sometimes undulate, apices obtuse to acute, faces densely hairy; mid to distal cauline sessile, blades ovate, 30–50 × 15–17 mm, stiff, greatly reduced distally, margins entire or finely serrate, sometimes undulate, apices acute to obtuse. Heads 9–190, in corymbiform arrays, compact or branches long and spreading, densely hairy throughout. Peduncles 3–15 mm, strigillose-canescent, bracteoles 1–3, linear-lanceolate. Involucres campanulate, 6–8 mm. Phyllaries in 3–4 series, unequal, oblong, conspicuously striate (3–5 pronounced nerves), obtuse. Ray florets 6–13; laminae 1.4–5.4 × 1.2–1.9 mm. Disc florets 14–35; corollas 4.3–6.1 mm, lobes 0.6–1.1 mm. Cypselae (obconic) 0.8–1.7 mm (ribbed), glabrous or strigillose apically; pappi 3–4 mm.

Distribution

V20-355-distribution-map.gif

Alta., Man., Ont., Sask., Ala., Ark., Colo., Conn., Del., Ga., Ill., Ind., Iowa, Kans., Ky., La., Mass., Md., Mich., Miss., Mo., Mont., N.C., N.Dak., N.J., N.Mex., N.Y., Nebr., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Va., W.Va., Wis., Wyo.

Discussion

Subspecies 3 (3 in the flora).

Solidago rigida is divided into three subspecies with distinct morphologies and partially overlapping ranges. Intermediates occur between the subspecies in areas of sympatry.

Selected References

None.

Key

1 Outer phyllaries glabrous; leaves and stems glabrous or ± hispid Solidago rigida subsp. glabrata
1 Outer phyllaries strigillose; leaves and stems moderately to densely hispid or strigose > 2
2 Inner phyllaries glabrate to sparsely strigillose, oblong and rounded; plants robust (60–150 cm); arrays loose, open; leaves and stems coarsely hispid (fewer than 50 hairs/mm 2) Solidago rigida subsp. rigida
2 Inner phyllaries conspicuously strigillose, often linear; plants usually short (30–70 cm), sometimes taller; arrays compact; leaves and stems finely and densely hispido-strigose (more than 50 hairs/mm 2) Solidago rigida subsp. humilis
... more about "Solidago rigida"
John C. Semple +  and Rachel E. Cook +
Linnaeus +
Aster sect. Ptarmicoidei +
Stiff-leaved goldenrod +
Alta. +, Man. +, Ont. +, Sask. +, Ala. +, Ark. +, Colo. +, Conn. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mass. +, Md. +, Mich. +, Miss. +, Mo. +, Mont. +, N.C. +, N.Dak. +, N.J. +, N.Mex. +, N.Y. +, Nebr. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Va. +, W.Va. +, Wis. +  and Wyo. +
Aster rigidus +  and Oligoneuron rigidum +
Solidago rigida +
Solidago sect. Ptarmicoidei +
species +