CORTICIUM 673 



I. Hymenium homogeneous, regular, consisting only of basidia. 

 Hyphae distinct, or indistinct, with or without clamp connections 

 at the septa, but never having abnormally large clamp connections, 

 or becoming tuber osely swollen at the septa. 



1. Receptacle membranaceous ; trama fibrillose, or tomentose, 

 hyphae always distinct; hymenium fairly thick. 



2282. C. caeruleum (Schrad.) Fr. Sow. Eng. Fung. t. 350, as Auricu- 

 laria phosphorea Sow. Trans. Brit. Myc. Soc. rv, t. 3, fig. 26. 



Caeruleum, dark blue. 



R. 2-15 cm., beautiful azure blue, somewhat round, broadly effused, 

 adnate, at first tomentose; margin whitish, or azure blue, byssoid. 

 Hymenium concolorous, paler when dry, papillose. Flesh bluish under 

 the hymenium, waxy, floccose, loose. Spores white, ovate-elliptical, 

 7-9 x 4-6 yu; "basidia 30-48 x 6-7-5/n, with 2-4-sterigmata. Hyphae 

 thin-, or slightly thick- walled, 3-4-5/A in diam., with clamp connections, 

 loose, blue in the subhymenial layer" Bourd. & Galz. Dead wood, 

 branches, sticks, and twigs, in woods, and hedgerows. Jan. Dec. 

 Common, (v.v.) 



2283. C. laeve (Pers.) Quel. (= Corticium evolvens Fr.) Fr. Icon. t. 

 198, fig. 1, as Corticium radiosum~Fi. Trans. Brit. Myc. Soc. iv, 

 t. 3, figs. 23-24. Laeve, smooth. 



R. 2-20 cm., white, cream colour, flesh colour, or tan, effused, en- 

 tirely adnate, or forming distinct, reflexed, strigose pileoli; margin 

 white, silky, radiating, or becoming obtuse, reflexed. Hymenium 

 cream colour, then pinkish ochre, or livid to brownish when old ; pale 

 buff with a pinkish tinge or lilac tinge when dry, smooth, waxy, more 

 or less undulate, sometimes coarsely tuberculate, and rarely Radulum- 

 like, usually much cracked in an areolate manner when dry. Flesh 

 pale, floccose, loose. Spores white, pyriform, or pip-shaped, usually 

 slightly incurved at the base, 9-12 x 6-7-5 jit, often slightly punctate; 

 "basidia 25-40-90 x 5-5-9 /u, with 2-4-sterigmata. Hyphae thin 

 walled, hyaline, 2-3-6/u. in diam., with clamp connections, parallel at 

 the base, then ascending in a loose trama" Bourd. & Galz. Trunks, 

 logs, and fallen branches. Jan. Dec. Common, (v.v.) 



2284. C. roseum (Pers.) Fr. (= Corticium roseolum Massee sec. Wakef . 

 in litt.) Roseum, rose-coloured. 



R. 2-12 cm., rose colour, effused, adnate; margin white, byssoid, 

 fringed. Hymenium rose pink, becoming pallid, or pale ochraceous 

 with a pink tinge when dry, pruinose, at length rimosely cracked. 

 Flesh pale, floccose, loose. Spores "white, sometimes tinged rosy, 

 oboval, 8-12-16-5 x 6-9-10/z; basidia at first bladder-shaped, sunk 

 in the simple, or branched paraphysoid hyphae, then normal, 28- 

 45 x 6-10/Lt, with 2-4 curved sterigmata, 6-8/1, long. Hyphae with 



K. B. B. 43 



