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Page number:141 
Description type:Non-original description 
Description:Aleurodiscus oakesii (Berkeley & Curtis) Höhnel & Litschauer, Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Kl., Abt. 1. 116:802. 1907.
Basionym: Corticium oakesii Berkeley & Curtis, Grevillea 1:166. 1873.
Basidiomata annual; disc-shaped or effuso-reflexed; soft-coriaceous; usually discrete, sometimes confluent. Upper surface tomentose to villose; white. Hymenial surface even; finely pruinose; yellow to gray; margin white. Hyphal system dimitic. Generative hyphae without clamps; smooth or lightly encrusted, scattered crystals throughout tissues; 3-3.5 µm diam. Skeletal hyphae hyaline; 3-4.5 µm diam. Monilioid hyphidia 4-8 µm diam. Acanthohyphidia present; thin- to slightly thick-walled; 4-6 µm diam. Basidia clavate; (2-) 4-sterigmate; basal clamp absent; 75-125 x 10-17 µm. Basidiospores ovoid-ellipsoid; hyaline; echinulate; thin- to slightly thick-walled; amyloid; 17-25 (-28) x 12-15 µm.
Distribution: According to Lemke (1964a) widespread in North America, also known from Great Britain, China and Japan.
Discussion: This species tends to become more effused and confluent than A. amorphus. Aleurodiscus oakesii is readily distinguished from the A. amorphus by its yellow basidiomata, habitation of hardwoods, and by the presence of acanthohyphidia. In the field this species may be confused with the stereoid form of Cylindrobasidium laeve; and when on Carpinus caroliniana, may be confused with Stereum striatum because of its whitish upper surface.
Descriptions and illustrations: Burt, 1918a; Killermann, 1943; Lemke, 1964b; Lincoff, 1981.
Resupinate species:
The following resupinate species occur on conifers in the Northeast (see Lemke, 1964a): A. penicillatus Burt, and A. tsugae Yasuda in Lloyd.
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