684 CORTICITTM 



*Spores turning blue with iodine. 



2318. C. (Gloeo.) porosum Berk. & Curt. (= Gloeocystidium stra- 

 mineum Bres.) Tropo?, a pore. 



R. 1-8 cm., white, then cream colour, or straw colour, effused, adnate ; 

 margin white, narrow, pruinose, or reticulately porous. Hymenium 

 concolorous, smooth. Flesh concolorous, subgelatinous, firm, dense. 

 Spores white, elliptical, 4r-7 x 2-4/u,, generally 2-guttulate, the mem- 

 brane turning deep violet blue with iodine ; basidia 12-18-28 x 3 6/u,, 

 with 2-4-sterigmata, 3-4//, long. Gloeocystidia abundant, tapering 

 to an obtuse, narrow apex, 15-150 x 6 14ju,, sometimes bifurcate, 

 contents granular, yellowish, then resinous. Hyphae coherent, T5- 

 3fj, in diam. Fallen branches, and decorticated wood. Jan. Dec. 

 Not uncommon, (v.v.) 



**Spores not turning blue with iodine. 



2319. C. (Gloeo.) polygonium (Pers.) Fr. Trans. Brit. Myc. Soc. iv, 

 t. 3, figs. 21-22. TToXvycoviov, with many angles. 



R. 3-80 mm.., flesh colour, or lilac, erumpent in small cushions, then 

 confluent, and effused, very adnate, pruinose; margin white, or flesh 

 colour, narrow, pruinose. Hymenium concolorous, often reddish when 

 dried, pruinose, soft. Flesh pale, subgrumous, waxy, then hard, and 

 firm. Spores white, cylindrical, slightly curved, with a lateral 

 apiculus, 8-13 x 3-4 /LI; basidia 45-55 x 6-8 fi. Gloeocystidia in- 

 cluded, forming balloon-like, pear-shaped, or subglobose vesicular 

 swellings, 20-30 ju. in diam. Basal hyphae hyaline, rather thick walled, 

 3-6ju, in diam., with clamp connections. Dead branches, especially 

 poplar. Jan. Dec. Not uncommon, (v.v.) 



2320. C. (Gloeo.) roseo-cremeum Bres. 



Roseus, rose colour; cremeum, cream colour. 



R. 3-5 cm., pallid pink, or dull reddish when bruised, effused, waxy; 

 margin white, pruinose, or pubescent. Hymenium concolorous, smooth, 

 or minutely porous, minutely atomate under a lens. Flesh pale, waxy 

 membranaceous, soft. Spores white, cylindrical, straight, the inner 

 side flattened, 8-11 x 3-4/x; basidia 22-45 x 4-7 /i, with 2-4-sterig- 

 mata, 4-7 //, long. Paraphyses long, slender, blunt at the apex, 2-3 /A 

 in diam. Gloeocystidia, when present, completely immersed in the 

 tissue, cylindrical, wavy, 30-90 x 5-9/i, contents pale yellowish. 

 Basal hyphae thin walled, 2-5-7 /x in diam., with occasional clamp 

 connections. Rotten wood. Oct. Dec. Uncommon, (v.v.) 



2321. C. (Gloeo.) praetermissum (Karst.) Bres. (= Peniophora praeter- 

 missa Karst. ; Corticium tenue Pat.) Praetermissum, passed over. 



R. 1-6 cm., pure white, then yellowish, or greenish, widely effused, 

 adnate, smooth; margin very thin, indeterminate, somewhat porous 



