Illinois Natural History Survey - University of Illinois

Bidens aristosa
Swamp marigold, Bearded beggarticks, Long-bracted beggar-ticks, Tickseed sunflower
Taxonomy

Synonyms: Bidens aristosa var. fritcheyi

Subspecific taxa:

Classification:

  • Magnoliophyta

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
0
N
0
D
0

Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:The taxonomy seperating Bidens aristosa and Bidens polyepis differ across authors, and many of the records between these species could be confused.

Origin: Native

Species Description

General: Dicot-herb, biennial, annual

Roots:

Shoots: alternate, opposite leaf arrangment; compound, pinnately leaf type; serrate leaf margin; Pinnate leaf venation; awl-shaped, linear, oblong, cordate leaf shape

Inflorescence: head

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

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Waste ground; along roadsides, railroads.

ILPIN Notes: Occasional in the northern one-third. Typical variety with outer involucral bracts 8-10, entire, merely finely ciliate Disk florets perfect and fertile; ray florets sterile or rarely pistillate.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 1
  • Chicago Area: 3

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