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Layia discoidea
Also called Rayless Layia
Layia discoidea is a rare species of flowering plant in the family Asteraceae known by the common name rayless tidytips, or rayless layia.
Layia discoidea is a local serpentine endemic where it is known only from the Diablo Range in southern San Benito County and far western Fresno County. The known distribution of the species is the New Idria serpentine mass (BLM Clear Creek Management Area) and nearby Laguna Mountain, Hepsedam Peak, and Panther Peak serpentine masses. Layia discoidea is regarded as a strict serpentine endemic with several populations known (as of 2017) to occur on greywacke and chert outcrop and talus at the edge of the New Idria Serpentine Mass near Condon Peak, Sampson Peak, and Idria Reservoir. Typical habitat of the species is serpentine rock outcrop, serpentine talus, and serpentine stream terraces where it grows in full sun with little to no competition from other plant species. The shale and chert outcrop habitat that a few populations of Layia discoidea grows on has similar (analogous) physical and microclimate conditions as the serpentine habitat that the species is primarily found growing.
Beach tidytips · Smooth tidytips · Tidy Tips · Fremont's tidytips · Woodland tidytips · Whitedaisy tidytips · Paleyellow tidytips · Tall tidytips · Jones' tidytips · Comanche Point tidytips · Munz's tidytips · Sierra tidytips
Text excerpted from the Wikipedia article Layia discoidea by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
