288 FETCH : 



Hydnum nigrescens n. sp. 



Dimidiate, or resupinate with scattered dimidiate pilei. 

 Pilei convex, up to 4 X 3 cm., orbicular, often laterally fused, 

 stout, densely fasciculato-strigose, brownish-white, becoming 

 brown or purple-brown ; spines up to 8 mm. long, terete, acute, 

 rigid, cartilaginous, 0-4 mm, diameter, tapering regularly to 

 the apex, cinereous, or purple-gray, becoming black when dry. 

 In the resupinate patches the spines arise from a rather thick, 

 spongy, strigose subiculum, which is at first brownish-white, 

 then brown, 



Hakgala, on decaying logs, fairly common ; type, 

 No. 5110, Hakgala, April, 1917. 



Thelephoracese. 



Corticium hypochroum n. sp. 



Effused, indeterminate, in oval patches about 3 X l'5cm,, 

 ashy with a purple tinge, in some states yellowish-green : 

 sterile margin orange-red, with a narrow yellow edge. Surface 

 even, compact, not waxy ; margin fimbriate. Total thick- 

 ness up to 0*4 mm, ; basal layer half the total thickness, a 

 loosely interwoven net of straight hyaline hypha;!, 2-4 ^ 

 diameter, with a few adherent crystals ; upper layer compact, 

 densely filled at the base with red granules, Basidia clavate, 

 20-25 X 6-8 ix ; spores hyaline, broadly oval, 6-8 X 4-5 JA. 

 Cystidia (gleocystidia) subcylindric, thin-walled, apex obtuse, 

 7 [JL diameter, projecting 60 [h. 



On the dead stem of some climbing plant, Hakgala, 

 December, 1917 ; No 5525 in Herb, Peradeniya. 



Corticium vagans B. & C. 



On stems of Solarium tuberosum L,, Diyanilla, April, 1918 , 

 No. 5675 in Herb. Peradeniya. 



Kordyana Commelinae n. sp, 



Hypophyllous ; stromata minute, white, erumpent, about 

 0-1 mm. diameter, gregarious on pale green or white patches. 

 Basidia clavate, 20 X 6 l^, two-spored ; spores clavate, 

 hyahne, 7-8 X 3-4 [f-. Conidiophores narrow-clavate, 50 V- 

 long, 4 [>. diameter above, 1 • 5 t^ diameter below ; conidia 

 (immature) globose, 2 t^ diameter. 



