Illinois Natural History Survey - University of Illinois

Anthemis cotula
Stinking chamomile, Stinkweed, Mayweed, Dog fennel
Taxonomy

Synonyms:

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

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
0
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:

Origin: Europe

Species Description

General: Dicot-herb, perennial, annual

Roots: primary

Shoots: alternate leaf arrangment; compound, pinnately leaf type; lobed (pinnately), other leaf margin; Pinnate leaf venation; linear, oblong leaf shape

Inflorescence: head

Flowers: perfect; 5 merous; incomplete, not sepals, regular, irregular; white; epigynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Waste ground about dwellings; roads and railroads. Barnyard weed characteristic of soils with high nitrate content.

ILPIN Notes: Decrease in numbers since reduction in farm draft horses. Muenscher, W.C. 1975. Poisonous Plants of the United States. Stephens, H.A. 1980. Poisonous Plants of Central United States. Disk florets perfect and fertile, ray florets sexless (neutral). Causes a contact dermatitis in some people. May also cause hayfever. A distinctive strong or unpleasant odor.

Functional Relationships:

  • Pollinators insects (insect)

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State:
  • Chicago Area:

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