Plant Image
Flower heads


Yavapai County Native & Naturalized Plants

Anthemis cotula - stinking chamomile

Synonyms: Anthemis foetida, Chamaemelum cotula, C. foetidum, Maruta cotula
Other Common Names: dog fennel, mayweed, mayweed chamomile, stinkweed, dog's chamomile
Plant Form: Forb or Subshrub

Family: Asteraceae


   
 
line decor
  Home   Plant Communities Plant List Search Forbs and Subshrubs Search Grasses Search Woody Plants Additional Resources About this Website
line decor
 

Click on Any Image for a Larger View

Leaves
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Plant
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Phyllaries
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Introduced   Life Cycle: Annual   Similar Species: Anthemis arvensis
General Desc: Bushy, taprooted annual, foul odor; upright and branching green stems, sometimes red-tinged; stems topped by a single large daisy-like flower head having an outer ring of white petals (ray flower) enclosing a yellow center; thin leaves are deeply divided.
Identification notes: Annual weed with a rank odor; stems branched throughout or at tips; leaves finely dissected and alternate; flower heads of ray and disc flowers, solitary at the tips of the numerous and leafless branches; single-seeded fruit furrowed, gland dotted.
Height: 4 inches to almost 2 feet


Habitat

Habitat Description: Disturbed sites, roadsides, streams, ditches, fields, waste places, barnyards.
Plant Communities: Riparian, Disturbed Areas
Elevation: 2500 - 8000 feet


Flower Characteristics

Color: White, yellow     Shape: Daisy or dandelion-like not in clusters     Tubular: N     Flowering Period: Apr - Jul
Description: Flower head to 1-1/4 inches wide with an outer ring of 10 to 15 white petals enclosing a center of hundreds of tiny yellow flowers (disc florets) that form a small round center dome. Hairy modified leaves surround the base of the flower head.


Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Compound     Leaf Shape: Pinnatifid     Leaf Margin: Lobed     Leaf Attachment: Alternate     Leaves Clasp: N
Hairs: Leaves and stems     Spines: N
Leaf Description: Stems smooth or have a sparse covering of hairs; leaves grow to 2-1/2 inches long and 1 inch wide, are deeply divided into narrow, pointed, very thin lobes, covered with long, soft, woolly hairs and dotted with glands; can cause a skin rash if touched.


Fruit and Seed Characteristics

Fruit Color: Light yellow to brown   
Fruit Type: Achene
Fruit Notes: Fruit is 1/16 inch, dry and single-seeded with a bumpy surface. Its shape is narrowly cylindric with 10 grooved, gland-dotted, lengthwise ribs; doesn't split to release seeds when ripe and lacks tufts of hair at its top to aid seed dipersal by wind.
Seed Notes: Seeds have a smooth surface and are dispersed by wind shaking the stem and by water as they are light enough to float easily. Each plant can produce thousands of seeds (up to 960,000 on large plants) which remain viable in the soil for several years.



  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
http://cales.arizona.edu/yavapaiplants/SpeciesDetailForb.php  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
Legal Disclaimer