Bull. Soc. mycol. Fr. 1: 103. 1885.
Common Name: none
Fruiting body 0.5-3.5 (5.0) cm broad, cupulate, elongate, to variously lobed, sometimes nearly flat in age, sessile to short stipitate; margin incurved, then straight, even to eroded; exterior surface dull yellow to yellowish-orange, bruising bluish-green to olive, especially near the margin; hymenial surface yellow-orange to orange, glabrous.
Spores 5.5-7.5 µm, globose, smooth, hyaline; spores whitish in deposit.
Scattered, gregarious to clustered on needle mats during the spring in the Sierra and higher elevations of the Coast Range; common in most years.
A snowbank fungus, Caloscypha fulgens is distinguished by its yellowish-orange, variously-shaped cups which discolor bluish-green with handling or age. It resembles Aleuria aurantia, the Orange Peel Fungus, but the latter lacks a bluing reaction and typically fruits in the fall. White forms, but still bluing, are occasionally encountered. This is one of a number of Ascomycetes used by morel hunters as an indicator species.
Dennis, R. W. G. (1981). British Ascomycetes. J. Cramer: Vaduz, Liechtenstein. 585 p.
Medardi, G. (2006). Ascomiceti d'Italia. Centro Studi Micologici: Trento. 454 p.
Smith, A.H. (1949). Mushrooms in their Natural Habitats. Sawyer's Inc: Portland, OR. 626 p.
Tylutki, E.E. (1979). Mushrooms of Idaho and the Pacific Northwest: Discomycetes. University of Idaho Press: Moscow, ID. 133 p.