Mgerita.'\ FUNGI. 323 



3. p. 207. — Lycop. equinum, With. v. 4. p. 347. Sow. t. 292. 

 — Lye. gossypinum, Bolt. t. 178. — Fungi parvi glohosi ex ungulo 

 eguino, &)e. Raii Syn. ed. S. p. 13. t. l.f. 3. 



On the hoofs of horses, cows, sheep, &c., also on horns. Occa- 

 sionally. There is a specimen in Hook. Herb, from Dr. Richardson, 

 gathered in the Arctic Regions on the horn of a Buffalo. 



The genus /;<5^?Ytt/e, Fr. which follows in the Syst. Myc. , founded on 

 two productions figured by Sowerby, must now be expunged, as the first, 

 I. acariforme, appears from authentic specimens to be Sphceria fragi- 

 formis, with an obscure Isariae-form parasite springing from its base, 

 resembling somewhat Isaria vmhrina, Pers., but as far as I can see in 

 the original specimens, as well as from others from Mr. Francis in Hook. 

 Herb., and some gathered by myself at Margate, it is altogether des- 

 titute of sporidia ; and the other, I. rudiatum, of which also I have ex- 

 amined authentic specimens, together with one communicated to Dr. 

 Hooker by Mr. Francis, has been proved by Desmazieres to be an 

 early stage of Agaricus radiatus. 



98. Trichoderma. Pers. Trichoderma. 



Peridium more or less rounded, foraned of loosely interwoven 

 branched Jloeci, soon obliterated in the centre. Sporidia dry, 

 collected together in the centre, and forming a sort of disc. — 

 IS^ame, ^^/g, a Aair, and cs^/x;e, ski?i. 



1. T. viride, Pers. {cjreen Trichoderma); peridium villons 

 white, sporidia globose dusky green. Ptrs. Syn. p. 230. Grev. 

 PL Ed. p. 465. Sc. Crypt. Fl. t.21\. Fr. Syst. Myc. v. 3. 

 p. 215. — Pyrenium lignorum, a. Tode, Fung. 3Icck. f. 29. — 

 Mucor lignifragus, Bull. t. 504. /. 6. Soiv. ! t. 378./. 14. 

 Purt. V, 2 4'3. w. 1122. 



On fallen trees, &c. Very common. 



99. Myrothechium. Tode. Myrotbecium. 

 Peridium more or less rounded, floccose, evanescent in the 

 centre. Sporidia minute, at first rather gelatinous, forming a 

 sort of disc. — Name, /j.v^oj, to Jlow, and ^r^y.r^, a receptacle. 



1. M. roridum, Tode, (spangled Jlyrothecium) ; disc turgid, 

 sporidia cylindric. Tode, Fung. Meek. f. 38. Fr. Syst. Myc. 

 V. 3. p. 217. — M. Carjuichaclii, Grev. Sc. Crypt. Fl. t. 140. 



On rotting plants, dried Agarics, &c. Appin. Copt. Carmichael — 

 The specimens on dried Agarics, though agreeing at first sight with 3/. 

 inundaftnn, have cylindric not globose sporidia. This fact was noticed 

 by M. Klotzsch when inspecting Dr. Hooker's Hcrbariuni, and my own 

 observations are in accordance with his. This is one among many in- 

 stances of tlie necessity of always having recourse to the microscoj)C 

 for the correct determination of tlic more minute fungi. The mass of 

 sporidia in the present genus bears a remarkable analogy to that in the 

 genus r/iallus. 



100. /EoERiTA. Pers. iEgerita. 



Peridium spherical, very fugacious. Sporidia farinaceous, 



