692 PENIOPHORA 



2339. P. laevis (Fr.) Burt. Laevis, smooth. 

 E. 1-3 cm., white, then cream coloured, broadly effused, not closely 



adnate; margin radiately fibrillose. Hymenium concolorous, more or 

 less cracked when dry. Flesh concolorous, membranaceous, thin. 

 Spores hyaline, elliptical oblong, 4-5-6 x 2-5-3-5^,, 1-guttulate; 

 basidia very variable, 20-36 x 3-6/u, (most frequently 35 x 4-5/u), 

 with 2-4-sterigmata, 4-6 />(, long. Cystidia fusoid, 40-90 x 4-7 /z, with- 

 out incrustation, x 6-llja with incrustation, walls thin or slightly 

 thickened. Hyphae regular with few, or no, clamp connections, thin 

 walled; subhymenial hyphae 3-4 /A in diam.; basal hyphae up to 

 7-8/x, in diam. Birch bark. Nov. Eare. 



2340. P. velutina (DC.) Cke. (= Corticium velutinum (DC.) Fr. ; 

 Peniophora scotica Massee.) Grevillea, vm, t. 125, no. 15. 



Velutina, velvety. 



E. 3-15 cm., white, or whitish, broadly effused, adnate ; margin 

 white, or flesh colour, running out into long, branching strands. Hy- 

 menium concolorous, becoming flesh colour, or reddish when dried, 

 minutely velvety. Flesh concolorous, soft, loose, fairly thick. Spores 

 white, oblong, elliptical, apiculate at the base, 4-8 x 2-5-5 /A; basidia 

 "20-32-50 x 4-7 ju. Cystidia fusiform, 30-140 x 6-9 p, generally 

 thick walled, smooth, or incrusted with oxalate crystals (18/z in 

 diam.), immersed in the tissue, or projecting. Basal hyphae more or 

 less thick walled, 4-lOju, in diam., with few clamp connections; sub- 

 hymenial hyphae thin walled, 3-4 //, in diam., soon collapsing" Bourd. 

 & Galz. Wood, and fallen branches. Jan. Dec. Common, (v.v.) 



2341. P. setigera (Fr.) Bres. (= Kneiffia setigera Fr.) Pat. Essai tax. 

 des Hymen, fig. 45, as Corticium setigerum (Fr.) Karst. 



Setigera, having bristles. 



E. 2-10 cm., white, yellowish when dry, broadly effused, or indeter- 

 minate, closely adnate, incrusting. Hymenium concolorous, papillose, 

 beset with scattered, or fasciculate hyaline bristles, often very much 

 cracked. Flesh concolorous, floccose, loose, thin. Spores white, "sub- 

 cylindrical, slightly curved, 8-11-16 x 3-4-6 /i, contents granular, or 

 1-multi-guttulate; basidia 21-45 x 4-8 /i, with 7-8-sterigmata. Cys- 

 tidia cylindrical, 75-250 x 7-15/x,, septate, with, or without, clamp 

 connections, often incrusted with crystalline granules, immersed, or 

 projecting. Basal hyphae distinct, thin walled, 2-4-8 /x, in diam., with 

 clamp connections, medial and subhymenial hyphae soon collapsing, 

 2-3/t in diam." Bourd. & Galz. Dead wood, and fallen branches. 

 Jan. Dec. Common, (v.v.) 



5. Eeceptacle waxy, very adnate, pubescent, hispid, or guttulate 

 under a lens. Cystidia abundant, strongly incrusted with crystalline 

 granules. 



