REVISIONS OF CEYLON FUNGI. iW 



Dematiacece. This probably explains why they did not refer 

 their fungus to Pithomyces. In their Hst of the Fungi of Ceylon , 

 Berkeley and Broome place Pithomyces between Zygosporium 

 and Graphium, evidently in Detnatiacece. The lax arrange- 

 ment of the conidiophores precludes its inclusion in Tubercu- 

 lariacece. 



Pithomyces Berk. & Br. (Char, emend). Hyphae steriles 

 repentes ; hyphse fertiles laxe caespitosse, simpHces v. ramosse, 

 Isete coloratse, basim versus conidiiferge, supra steriles, inter- 

 textse. Conidia nigricantia, elhptica vel eUiptico-oblonga, 

 septata, pediciUis brevibus, lateraha. 



Pithomyces flavus Berk. & Br. EfEusa, velutina, superficialis, 

 tenuissima, flava, flavo-aurantia, flavo-viridis, vel flavo- 

 ohvacea, intus ob conidia nigra, liinc bicolor : hyp his sterihbus 

 repentibus, septatis, scabris, flavo-fuhgineis, 3-4 /* diam. ; 

 hyphis fertihbus suberectis, simphcibus v. saepe furcatis, 

 cylindraceis, 2-3 /^ diam., flexuosis, minute scabris, septatis, 

 flavidis, supra sterihbus intertextis ; conidiis ellipsoideis v. 

 eUipsoideo-oblongis, utrinque rotundatis, crasse scabris, 3-5 

 septatis. ad septa constrictis, 22-47 X 18-25 /u, fuligineis, 

 coacervatis nigricantibus. 



70. — Sclerocystis coremioides B. & Br. 



Sclerocystis coremioides B. & Br., Fungi of Ceylon, No. 1183, 

 Joum. Linn. Soc, XIV., p. 137. 



Tuber zeylanicum B. & Br., Fungi of Ceylon, No. 975, 

 Joui-n. Linn. Soc, XIV., p. 110. 



In the Annals of Botany, Vol. XXII., pp. 116-117, it was 

 stated that the genus Sclerocystis was founded on a sclerotium, 

 and that Tuber zeylanicum was another larger sclerotium, 

 which when planted in damp sand produced small sclerotia 

 resembling those of Sclerocystis coremioides. The two species 

 have since been found developing together from the same 

 mycehum, and there is no doubt that they are identical. It 

 has not yet been possible to ascertain to what group it belongs, 

 but evidently both names should be discarded. Sclerocystis 

 might be revived if it is subsequently found that the complete 

 fungus does not fall into any existing genus. 



