Flora of North America species comparison

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Solidago rigida subsp. rigida
Photo is of parent taxon
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.
Peduncles

densely hispido-strigose.
Disc corolla

lobes deep, 1.1–1.6 mm.
Phyllaries

outer hairy;

inner oblong to slightly spatulate, 0.8–1.4 mm wide, glabrate to puberulent.
Heads

usually in loose, open, spreading, flat-topped arrays, 3–20(–34) × (4.5–)6.5–18(–27) cm.
Cypselae

glabrous.
2n

= 18, 36.

Solidago rigida subsp. rigida
Phenology Flowering Aug–Oct.
Habitat Prairies, glades, oak savannas, dry open areas especially on calcareous soils, disturbed grounds (railroads, etc.)
Elevation 0–400+ m (0–1300+ ft)
Distribution
from FNA
AR; CT; DE; IA; IL; IN; KS; KY; MA; MD; MI; MO; NC; NE; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; WI; WV; ON
[BONAP county map]
Source FNA vol. 20, p. 163.
Parent taxa Asteraceae > tribe Astereae > Solidago > sect. Ptarmicoidei > Solidago rigida
Sibling taxa
S. rigida subsp. glabrata, S. rigida subsp. humilis
Synonyms Oligoneuron grandiflorum, S. grandiflora, S. rigida var. magna, S. rigida var. microcephala
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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