PENIOPHORA 695 



var. hydnoidea (Pers.) Bourd. & Galz. (= Radulum laetum Fr.) 



vSvov, the genus Hydnum; elSos, like. 



Differs from the type in its Radulum-like hymenium, and sub- 

 corticolous habit. Dead wood, and branches of hornbeam, more rarely 

 on alder. Oct. March. Not uncommon, (v.v.) 



2348. P. nuda (Fr.) Bres. (= Corticium nudum Fr. ; ? Peniophora 

 ochracea (Fr.) Mass. sec. Wakef. in litt.) Nuda, naked. 



R. -5-6 cm., hyaline livid, then rose colour or pale lilac, effused, con- 

 fluent, adnate; margin similar, or narrow, pruinose. Hymenium con- 

 colorous, becoming paler, pruinose, cracked when dry. Flesh brownish, 

 waxy, then rigid, firm. Spores white, "cylindrical, incurved, 7-12 x 

 3-5 /z; basidia 15-27 x 4-7 ju. Cystidia hyaline, the basal ones oboval, 

 or elliptical, 15-45 x (6-)15-19/i, the others more elongate, 45-50 x 

 6-8/u,, thin walled, contents granular, incrusting the walls, rugose, 

 cracked. Hyphae little distinct, 3-5/u, in diam." Bourd. & Galz. 

 Dead wood, and branches. Nov. April. Not uncommon, (v.v.) 



var. maculaefonnis (Fr.) von Hoehn. & Litsch. (= Corticium maculae- 

 forme Fr.) Macula, a spot;/orma, shape. 

 Differs from the type in commencing as very small spots, 1-2 mm. 

 broad, which become confluent and effused, and in the lilac pruina on 

 the reddish violet hymenium. Dead wood. Uncommon. 



2349. P. violaceo-livida (Sommerf.) Bres. ex Bourd. & Galz. (= Cor- 

 ticium violaceo-lividum (Sommerf.) Fr.) 



Violaceus, violet; lividum, black and blue. 



R. 2-12 cm., violaceous livid, then cinereous lilac, resupinate, round, 

 tubercular, closely adnate. Hymenium concolorous, becoming paler, 

 minutely pruinose, then cracked. Flesh discoloured, waxy, then rigid, 

 fairly thick. Spores white, "cylindrical, slightly incurved, 9-12 x 

 3-4-5/n; basidia 20-26 x 6-8/1. Cystidia ovoid, or broadly fusiform, 

 24-45 x 12-21 p, thin walled, contents vitrified. Hyphae little dis- 

 tinct, 2-t/i in diam." Bourd. & Galz. Dead wood, and plum trees. 

 Jan. April. Uncommon, (v.v.) 



2350. P. caesia (Bres.) Bourd. & Galz. (=Corticium Lycii (Pers.) Cke.) 

 Bres. Fung. Trid. n, t. 145, fig. 2, as Corticium caesium Bres. 



Caesia, bluish grey. 



R. 1-4 cm., bluish grey, greyish lilac, bluish cinereous, becoming 

 paler or hoary, broadly effused, closely adnate; margin similar. Hy- 

 menium concolorous, delicately pruinose, at length cracked. Flesh 

 paler, subgrumous, thin. Spores white, sausage-shaped, or cylindrical 

 and incurved, 8-11 x 3-4-5/u,; "basidia 25-32 x 4-6 p. Cystidia 

 basal ones obovate, or globose, 5-18-32 x 3-14-24/i, hyaline, soon 

 vitrified; the others cylindrical, or fusiform, and produced into a 



