Abstract
Abstract. Carex orestera Zika (Cyperaceae) is described from western North America and is endemic to five counties in central and southern California in the Sierra Nevada range and the adjacent White Mountains. The taxon is separable from C. albonigra Mack. in its more lanceolate to oblong scales with a conspicuous pale midvein and relatively narrower perigynia. The new species is assigned to Carex L. sect. Racemosae G. Don, and a sectional key is provided for these sedges in California.
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