Tripleurospermum Inodorum, Scentless Mayweed
Plants > Wildflowers > Asteraceae > Tripleurospermum Inodorum
Common names:
Scentless mayweed, wild chamomile, scentless chamomile
Family:
Scientific name:
Tripleurospermum inodorum
Synonyms:
Matricaria perforata, tripleurospermum maritimum
Main flower color:
Range:
Scattered areas of most of the western states (not Arizona or Texas). Non native
Height:
Between 12 and 30 inches
Habitat:
Roadsides, fields, disturbed ground, in the montane and subalpine zones
Leaves:
Up to 2.5 inches long, finely divided into narrow, linear, fern-like segments
Season:
June to October
Tripleurospermum inodorum originates in Asia and Europe but has long been introduced to the US, where it is classed as an invasive weed, and grows mostly in disturbed areas, at moderate elevations. The flowers have 15 to 20 oblong ray florets, slightly notched at the tip, surrounding a domed, hemispherical center of numerous disc florets; very similar to another introduced, daisy-like species, leucanthemum vulgare, but easily distinguished by its leaves, which are finely divided 2 or 3 times into very thin, linear lobes. Flowers are nearly 2 inches in diameter. The ray petals angle downwards on mature plants. Phyllaries are green with dark brown edges.
All Contents © Copyright The American Southwest | Comments and Questions | Contribute | Site Map