scentless mayweed (South Georgia Flora)

scentless mayweed

Tripleurospermum inodorum

Summary ²

Tripleurospermum inodorum, common names scentless false mayweed, scentless mayweed, scentless chamomile, wild chamomile, mayweed, false chamomile, and Baldr's brow, is the type species of Tripleurospermum. This plant is native to Eurasia and North Africa and is considered an invasive weed in North America.

Scentless mayweed is an erect or sprawling annual herb growing up to 50 cm tall; stems highly branched. Leaf blades arranged alternately; hairless, 2-3 times subdivided into narrow thread-like segments. Flower heads are compound (daisy-like) flowers 2-4.5 cm across, with leaf-like bracts at their base; outer circle of white florets and inner cluster of yellow florets. Each fruit is dry, flattened, thin-walled, containing a single seed; without pappus; dispersed by wind, people, animals; may be viable in the soil 5 years or more.

Distribution ³

Known from Grytviken

Comments ⁴

Unlikely to be mistaken for any other species on South Georgia. Related to chamomile, leaves odourless when crushed.

Sources and Credits

(c) Radio Tonreg, some rights reserved (CC BY), http://www.flickr.com/photos/tonreg/8236698861/
Adapted by stuwhiterod from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Tripleurospermum_inodorum
(c) Kelvin Floyd, some rights reserved (CC BY-SA)
(c) stuwhiterod, some rights reserved (CC BY-SA)

More Info

iNat Map

Group	Forb
Category	Non Native

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