Abstract
Dudleya cymosa subsp. costafolia, a new subspecies from the southern Sierra Nevada, Tulare County, California, is described and illustrated. Along with bright yellow flowers, the cespitose plant produces numerous, small rosettes with rib-shaped linear to linear-oblanceolate leaves, which are unique to the subspecies. The authors have searched numerous other rock outcrops, especially limestone, in the general area for additional plants with no success. Dudleya cymosa subsp. costafolia evidently is restricted to a solitary limestone outcrop north of the South Fork of the Middle Fork of the Tule River.
Highlights
The second author, while searching in Tulare County in 1983 for range extensions of uncommon calciphiles
We searched numerous rock outcrops, especially of limestone, in the Tule River area, only D. cymosa subsp. cymosa grew at these sites
D. cymosa subsp. costafolia appears to be restricted to the type locality, a southwest-facing limestone outcrop north ofthe South Fork ofthe Middle Fork ofthe Tule River and west ofPierpoint Springs Resort
Summary
Costafolia (Crassulaceae), A New Subspecies from the Southern Sierra Nevada, Tulare County, California," Aliso: A Journal of Systematic and Evolutionary Botany: Vol 12: Iss. 4, Article 6. COSTAFOLIA (CRASSULACEAE), A NEW SUBSPECIES FROM THE SOUTHERN. Office ofEndangered Species U.S Fish and Wildlife Service 2800 Cottage Way, Sacramento, California 95825-1846
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