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"
not tailed +, rounded +  and obtuse +
distinct +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
subequal +
24mm +  and 50mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
flat-topped +  and rounded +
John C. Semple +  and Rachel E. Cook +
Linnaeus +
decurrent +
Aster sect. Ptarmicoidei +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
ovate;obtuse;acute +
reduced +
15mm;17mm +
rugulose +  and muricate +
linear-lanceolate +
Stiff-leaved goldenrod +
not 2-lipped +  and actinomorphic +
yellow +  and white +
ampliate +
0.43 cm4.3 mm <br />0.0043 m <br /> (0.61 cm6.1 mm <br />0.0061 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
strigillose +  and glabrous +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
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. +
resinous +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
obtuse;acute +
2.4 cm24 mm <br />0.024 m <br /> (5 cm50 mm <br />0.05 m <br />) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
glomerulate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.4mm;5.4mm +
1.2mm;1.9mm +
sessile +  and petiolate +
cauline +, proximal +  and basal +
erect;spreading +
triangular +  and narrowly lanceolate +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
obtuse +  and acute +
2.4 cm24 mm <br />0.024 m <br /> (5 cm50 mm <br />0.05 m <br />) +
serrate +  and entire +
80mm;200mm +
undulate +, obtuse +  and acute +
24mm +  and 50mm +
linear-lanceolate +  and oblong or ovate +
unequal +  and rarely subequal +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
strigillose-canescent +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
obtuse +  and oblong +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
1 +  and 10 +
appendaged +  and truncate +
papillate +  and smooth +
Aster rigidus +  and Oligoneuron rigidum +
Solidago rigida +
Solidago sect. Ptarmicoidei +
species +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +