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.

"thick" is not a number.

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 +
18 cm180 mm <br />0.18 m <br /> (27 cm270 mm <br />0.27 m <br />) +
indeterminate +  and determinate +
flat-topped +
6.5cm +  and 18cm +
John C. Semple +  and Rachel E. Cook +
Linnaeus +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0 cm0 mm <br />0 m <br /> (10 cm100 mm <br />0.1 m <br />) +
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 +
not 2-lipped +  and actinomorphic +
yellow +  and white +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
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 +
compressed +, narrowly obconic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
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 +
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 +
Prairies, glades, oak savannas, dry open areas especially on calcareous soils, disturbed grounds (railroads, etc.) +
glomerulate +
20 cm200 mm <br />0.2 m <br /> (34 cm340 mm <br />0.34 m <br />) +
indeterminate +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
heterogamous +  and homogamous +
each +  and sessile +
glabrate +  and puberulent +
oblong +  and slightly spatulate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
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 />) +
hispido-strigose +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Aug–Oct. +
obtuse +  and oblong +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
strigillose +  and glabrous +
8 +  and 10 +
exalbuminous +
1 +  and 10 +
60 cm600 mm <br />0.6 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
appendaged +  and truncate +
papillate +  and smooth +
Oligoneuron grandiflorum +, Solidago grandiflora +, Solidago rigida var. magna +  and Solidago rigida var. microcephala +
Solidago rigida subsp. rigida +
Solidago rigida +
subspecies +
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 />) +