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Literature:
 
Page number:592 
Description type:Non-original description 
Description:Sparassis crispa Wulfen: Fr., Syst. Mycol. 1:465. 1821.
Clavaria crispa Wulfen in Jacquin. Misc. Austriaca 2: p. 100. 1781.
Elvella ramosa Schaeffer, Fung. Bavaria et Palatinatu. p. 106. 1772.
Neotype: [GERMANY], Etterzhausen, am Fusse von Pinus silv., 20.9.76., leg. Besl, Nr. 23 (REG).
Macroscopic Characters: Basidiocarp 6-10 cm broad, 6-10 cm tall, composed of several broad flattened layers of tissue extending from just above ground level and forming broad flabellae that are much dissected and contorted, the ends of the flabellae becoming even more dissected, undulating, and contorted, the apices being 0.5-1 cm wide, abhymenial surface pale creamy yellow, hymenial surface brownish yellow, both surfaces with irregularly oriented veins and ridges; epigeous portion borne on a hypogeus radicating base, composed of soil particles and interwoven hyphae.
Microscopic characters: flabellae approximately 1-1.25 mm thick; cutis approximately 20 :m thick with hyphae hyaline, thin-walled, interwoven, 2-4 :m diam, with clamp connections, tips protruding just above the surface; context 800-1,000 :m thick with hyphae extremely variable in shape, (1) hypha-like cells 4-10 :m diam, possessing clamp connections, (2) pseudoparenchymatous cells up to 40 :m diam, both more or less thick-walled; refractive hyphae interspersed among these cells, staining strongly in phloxine and in Melzer's reagent, hyaline, thin-walled, with clamp connections; subhymenium up to 20 :m thick, hyphae densely interwoven, 3-6 :m diam, hyaline, thinwalled, with clamp connections; basidia 50-70 x 5-7 :m, clavate, hyaline, thin-walled, four-sterigmate, with a clamp connection at the base; hyphidia 30-60 x 2-4 :m, apex cylindrical or swollen up to 4 :m diam, hyaline, thinwalled, smooth, clamped at the base; basidiospores broadly ovoid, 5-6(-6.5) x 4-5 :m, hyaline, thin-walled, smooth, not reacting with Melzer's reagent, with a small apiculum.
As indicated by Martin and Gilbertson (1976, p. 637), the fungus called S. radicata in the United States is actually S. crispa. What was known as S. crispa in the southeastern United States is now known to be S. spathulata. Both species cause a brown rot of roots and heartwood of living trees.
 
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