(Cotylidia diaphana)
Conservation • Description • Habitat • Ecology • Distribution • Taxonomy
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Description |
Cotylidia diaphana is a pale, easily overlooked, medium-sized, terrestrial fungus. It occurs in North America and Central America. It has been reported in South America, but due to a previous confusion with Cotylidia aurantiaca, those records are unverified. There are also a handful of widely scattered records, and many citizen science observations, in Asia. In the United States it occurs in the northeast, in the Upper Midwest, and on the West Coast. Cotylidia diaphana is found in summer and fall, in moist deciduous woodlands, usually alone but sometimes in groups. It grows on the ground among humus and woody debris or on the wood of hardwood trees. The fruiting body consists of a cap and a well-developed stalk, which differentiates it from fungi in the genus Stereum. It is erect, thin, leathery, and tough. The cap is ⅝″ to 1 9⁄16″ (15 to 40 mm) long and 5⁄16″ to 1 3⁄16″ (8 to 30 mm) wide. It is almost always vase shaped, funnel shaped, or cone shaped, rarely spatula shaped. It is sometimes deeply split into petal-like lobes that fuse together. When in groups, it may fuse to adjacent fruiting bodies. It is white to pale cream colored when fresh. As it ages, it becomes straw-colored, sometimes with obscure, concentric, darker zones. The upper surface is dry and either smooth or with fine, radiating fibers (fibrils). The margin is thin and may be smooth or roughly toothed (lacerate). The lower, spore-bearing surface is white to pale yellowish brown when fresh, sometimes becoming pale reddish brown with age. The spore surface usually continues down the stalk. The stalk is white, slender, cylindric, 5⁄16″ to ¾″ (8 to 20 mm) long, and 1⁄32″ to ⅛″ (1 to 4 mm) thick. It is covered toward the base with white, velvety, downy, or woolly hairs that bind to the soil creating a ball. The flesh is small, thin, and insubstantial. The spore print is whitish. |
Similar Species |
Habitat and Hosts |
Deciduous woodlands |
Ecology |
Season |
Summer and fall |
Distribution |
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Sources |
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12/17/2024 | ||
Occurrence |
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Taxonomy |
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Kingdom |
Fungi (fungi) |
Subkingdom |
Dikarya |
Phylum |
Basidiomycota (club fungi) |
Subphylum |
Agaricomycotina (jelly fungi, yeasts, and mushrooms) |
Class |
Agaricomycetes (mushrooms, bracket fungi, puffballs, and allies) |
Order |
Hymenochaetales |
Family |
Rickenellaceae |
Genus |
Cotylidia |
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Subordinate Taxa |
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Synonyms |
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Podoscypha diaphana Stereum diaphanum Stereum willeyi Thelephora diaphana Thelephora sullivantii Thelephora willeyi |
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Common Names |
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This species was formerly classified as Stereum diaphanum and was known by the common name “Stalked Stereum.” It was later moved to the genus Cotylidia, and the former common name is no longer appropriate. It now has no common name. |
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Greg Watson |
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Cotylidia diaphana I took the attached pictures of Cotylidia diaphana on the trail up to Sugar Loaf in Winona on October 1st. |
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About
Dec 5, 2020 ilk defa karşılaştığım nadir bir tür sanırım. Google Translate: I think this is a rare species that I have encountered for the first time. |
Created: 12/17/2024 Last Updated: © MinnesotaSeasons.com. All rights reserved. |