Resupinate Hymenomycetes. Wakefield & Pearson. 139 



Hymenium when perfect waxy, at first white then deep cream 

 or pale aUitaceous, pulverulent under the len^, Basidia cylin- 

 drical to clavate, with four sterig- 

 mata. Spores hyaline, smooth, ellip- 

 tical or ovate, somewhat irregular, 

 9-12 X 6-8/u., guttulate. Hypliae 

 rather thick-walled, branched, fre- 

 quently septate, with clamp-connec- 

 tions, 4-6|U, in diameter. 



On living pollarded willow, St. 

 George's College, Weybridge, Nov. 

 1918, A. A. P. and Rev. P. Alexander ; 

 on heads of willow, near Worcester, 

 Nov. 1918, C. Rea; on a stump (not x55o 



named), Marston Green, near Bir- Cnrticium bombycinum. 

 mingham, Nov. 1918, W. B. Grove. 



This species would appear to have a preference for living 

 trees, as it is recorded 'oy Bourdot also on living trunks of 

 various trees. There is however at present no evidence that it 

 is a parasite. Raduloid forms occur frequently intermixed with 

 the typical Corticium form. The soft, thick texture and large, 

 somewhat irregular spores are characteristic of the species. 



Coyticiuni Samhuci Fr., vellerciim Ell. & Cragin, ccJiinospornm 

 Ellis (yellow form), confine Bourd. & Galz. 



Corticium atro-virois Fr., Epicr. p. 562. 



The spores of this specimen are regularly globose, 5/x in 

 diameter, hence slightly larger than those described by Bourdot 

 (3-4 X 3-3"5/^) and figured by Rea (Trans. Brit. Myc. Soc. Ill, 

 Plate 16). Hyphae, basidia and spores are all pale grey-blue 

 by transmitted light. The colour of the fungus when fresh 

 is in Ridgway's nomenclature "Deep bluish gray-green" to 

 "Russian green." 



On dead leaves and twigs lying on the ground, Weybridge, 

 Nov. 1918, A.A.P. cS: E.M.W. In habit suggesting a Hypho- 

 mycete. 



Corticium (Glococystidium) coroniferum von Hoehn. et Litsch. in 

 Sitzungsber. K. Akad. Wiss. Wien, CXVI, 1907, p. 825. 

 Effused, pure white then cream, very thin, following the 

 inequalities of the matrix, fragile and pulverulent, easily 

 separable as a delicate pellicle; margin indeterminate, gradually 

 thinning out to a cobweb-like film. Gloeocystidia rare, some- 

 times lacking, cylindrical, obtuse, very thin-walled, 45-50 

 X 5-6 /A, contents more or less yellowish. Basidia cylindric- 



