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Common name: Water Buttons
Cotula coronopifolia L. APNI*
Synonyms: Cotula integrifolia Hook.f. APNI*
Cotula integrifolia Hook.f. APNI*
Description: Erect to spreading annual, usually c. 20 cm high, glabrous, somewhat fleshy.
Leaves linear to oblong, c. 2 cm long, entire or with few remote teeth or lobes; upper leaves smaller, entire.
Heads 5–12 mm diam.; peduncles exceeding leaves; involucral bracts ovate to lanceolate, obtuse. Outer florets 1-seriate, lacking corollas. Inner florets yellow.
Achenes 1.5–2 mm long; outer strongly flattened, densely glandular-hairy, winged; inner ± flattened, sparsely glandular, with narrow marginal ridges.
Flowering: mainly winter to late spring.
Distribution and occurrence: Grows in damp, often saline disturbed communities; widespread. Native of S Afr.
NSW subdivisions: *NC, *CC, *SC, *ST, *NWS, *CWS, *SWS, *SWP, *SFWP
Other Australian states: *Qld *Vic. *Tas. *W.A. *S.A.
Text by E. A. Brown
Taxon concept: Flora of NSW 3 (1992)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.