AURICULARIA 727 



basidia elongate, cylindrical, wavy, apex frequently incurved, and 

 almost circinate, transversely 4-septate, 40-50 x 4-5 /*. Subhymenial 

 hyphae thin, guttulate, l-2ju, in diam., arising erect and parallel from 

 a compact, pseudoparenchymatous basal stratum of broader hyphae, 

 4-5 /A in diam. Fallen branches. June. Rare. 



Auricularia (Bull.) (= Hirneola Fr. p.p.). 



(Auricula, the ear.) 



Receptacle gelatinous-coriaceous, cartilaginous when dry; dimi- 

 diate, or cup-shaped, substipitate, or sessile; consisting of three 

 layers, the upper layer thin and compact, very rarely glabrous, 

 generally tomentose with thick, cylindrical, simple, erect or decum- 

 bent hairs, the intermediate layer consisting of thin, gelatinous hyphae 

 forming a compact tissue, and the lower layer forming the hymenium. 

 Hymenium smooth, reticulate, or ribbed, fully exposed from the first. 

 Basidia cylindrical, transversely 3-septate, with long, thin sterigmata, 

 and forming a firm, palisade-like layer. Spores white, cylindrical, 

 oblong, or subreniform, producing sporidiola on germination. Grow- 

 ing on wood. 



2480. A. mesenterica (Dicks.) Fr. RoUand, Champ, t. 106, no. 242. 



yu-eo-o?, middle; evrepov, intestine. 



R. 5-30 cm., fuscous cinereous, grey, or tawny, resupinate, often 

 cup-shaped, then confluent and reflexed, imbricate, flexuose, villose, 

 fasciato-zoned. Hymenium pale, or greyish, then fuscous violaceous, 

 costato-plicate, pruinose with the spores. Flesh fuscous, gelatinous, 

 then cartilaginous. Spores white, cylindrical, curved, 17-20 x 6-7 /x, 

 1-3-guttulate. Stumps and felled trunks, especially elm. Jan. Dec. 

 Common, (v.v.) 



var. lobata (Sommerf.) Quel. Berk. Outl. Brit. Fung. t. 18, fig. 1, as 

 Auricularia lobata. Lobata, lobed. 



Differs from the type in the lobed margin of the p. Stumps. Jan. 

 Dec. Not uncommon, (v.v.) 



2481. A. auricula- Judae (Linn.) Schroet. (= Hirneola auricula- Judae 

 (Linn.) Berk.) Berk. Outl. Brit. Fung. t. 18, fig. 7, as Hirneola 

 auricula- Judae. Auricula, ear; Judae, of a Jew. 



R. 2-8 cm., grey, then olivaceous, or brownish, and finally black, 

 cup-shaped, hemispherical, concave, then ear-shaped, flexuose, pli- 

 cate, transparent, tomentose with subbulbous hairs. Hymenium pale, 

 then greyish and finally fuscous, smooth, then venoso-plicate. Flesh 

 whitish, gelatinous, then cartilaginous, tough. Spores white, oblong, 

 or cylindrical, curved, 16-20 x 6-9/A, often 2-guttulate. Edible. 

 Common on old elders, more rarely on beech, elm, oak, walnut, willow, 

 holly and Berber is arcuata. Jan. Dec. Common, (v.v.) 



