Illinois Natural History Survey - University of Illinois

Helianthus strumosus
Pale-leaf woodland sunflower, Swollen sunflower
Taxonomy

Synonyms:

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI

Species Distribution
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More about map & occurrence records

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: FLNA;  USDA Plants;  BONAP;  BISON

Collections, Observations & Flowering by Month [?]

J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Collections & Observations by Decade [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Dicot-herb, perennial

Roots: adventitious, fibrous, rhizomes, tubers

Shoots: alternate, opposite leaf arrangment; simple leaf type; entire, serrate leaf margin; Pinnate leaf venation; oblong, lanceolate leaf shape

Inflorescence: head

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

Fruit: achene

Physiology: autotrophic

Reproduction: sexual, vegetative

Ecology & Natural History

Habitat: Species is distributed in open woods, wet meadows, along roadsides and railroads.

ILPIN Notes: Rodgers, C.E., T.E. Thompson, and G.J. Seiler. 1982. Sunflower species of the United States. National Sunflower Association, Bismark, N.D. 75 pp. Disk florets are perfect; ray florets are sterile. Species may possibly be used as: bread stuff; oil; soup; coffee substitute. Species is very diverse in appearance. It is called the "wastebasket" species by some.

Functional Relationships:

  • Pollinators:
  • Dispersal:
  • Mycorrhizae:
  • N2 fixation:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 3
  • Chicago Area: 5

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