(Scentless Chamomile)

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9390

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9366

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9381

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9371

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9396

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Tripleurospermum inodorum, Silver Shekel, Breckenridge, Summit Co. 9406

Scientific Name Tripleurospermum inodorum (Matricaria perforata) USDA PLANTS Symbol TRIN11
Common Name Scentless Chamomile, False Chamomile, Scentless False Mayweed ITIS Taxonomic Serial No. 522916
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to montane (4600 to 10500 ft.); disturbed areas, roadsides, around buildings.
Plant: Erect annual (usually), single stem, multiple branches; 12 to 24 inches (or more) tall.
Leaves: Stem leaves alternate, 1-1/2 to 3-1/4 inches long, finely dissected into fleshy, narrow linear lobes.
Inflorescence: Many (10 to 200 or more) solitary flower heads about 2 inches across with 10 to 25 white rays and many yellow disk florets in a mound-shaped center; oblong phyllaries dark greenish or brownish, margins colorless to light brown.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, Colorado Department of Agriculture and Flora of North America.
Notes: Native to Eurasia and North Africa, considered an invasive weed in Colorado.
BONAP Distribution Map


Tripleurospermum maritimum ssp. inodorum
Colorado Status:
Introduced
NOXIOUS WEED

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County