Illinois Natural History Survey - University of Illinois

Solidago rigida
Stiff goldenrod, Hard-leaf flat-top-goldenrod, Rigid goldenrod
Taxonomy

Synonyms: Solidago rigida ssp. humilis, Oligoneuron canescens, Oligoneuron rigidum, Aster rigidus, Solidago rigida ssp. rigida, Solidago rigida ssp. glabrata, Oligoneuron rigidum var. rigidum

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
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Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

J
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F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
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N
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D
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Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:Subspecies humilis (aka Solidago canescens) appears to be introduced into Illinois according to the Flora of North America

Origin: Native

Species Description

General: Dicot-herb, perennial

Roots: adventitious, fibrous

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Pinnate leaf venation; linear, oblong, ovate, oblanceolate, obovate leaf shape

Inflorescence: corymb, head

Flowers: perfect, unisexual, monoecious; complete, incomplete, regular, irregular; yellow; epigynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is distributed in rocky open ground and woods, borders of wet meadows, prairie remnants and disturbed prairies.

ILPIN Notes: Seed company numbers: 2, 5, 6, 61 Disk florets are perfect; ray florets are pistillate, and both fertile. Plant has a stout, branched caudex. Pammel, Louis, H. 1911. A Manual of Poisonous Plants. Torch Press. Cedar Rapids, Iowa. 977 pp. Muenscher, W.C.L. 1939. Poisonous Plants of the United States. The Macmillan Co. New York, N.Y. 266 pp. Stephens, H.A. 1980. Poisonous Plants of the Central United States. Regent Press of Kansas. Lawrence, KA. 165 pp. Species is uncommon in extreme southern tip of Illinois. This pertains to terrestrial furbears who eat as food the foliage, plants. Regarding aquatic species food value, this pertains to aquatic furbearers. This is a characteristic prairie species. The heads and involucres are larger than many Illinois species and showy. Lower leaves are persistent, petiolate; upper leaves are gradually reduced, becoming sessile, bases clasping - stem and leaves are densely pubescent.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers: high

Wildlife and Livestock Information:

  • Food Value: deer: good; upland game birds: good; small non-game bird: good; small mammals: good; aquatic species: good
  • Cover Value:

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 4
  • Chicago Area: 4

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