220 FUNGI. [Pyrenium. 



On trunks of "pear and apple trees." Fr. Cambridgeshire, Relhan. 



'* Erumpent, gregarious, 3 — 4 lines long, 1 line thick, black when 



dry." Fr. I. c. " Very much like the tartar of port-wine." Helh. I, c. 



3. D. stilldtusy Nees, {common Daa^ymyces) ; roundish con- 

 vex at length plicate yellow then orange. Fr. Syst, Myc, v. 

 2. p. 230. Scler. Suec, ! n. 296. Grev. Sc. Crypt. Fl. t. 139. 

 —Tr. deliquescens, Bull. t. 455./. 3. WM. v. 5. p. 69. Purt. 

 V. 3. n. 1423. Grev. Fl. Ed. p. 427. — T. lacrymalis, Pers. 

 Syn. p. 628. 



On wood, especially of fir. Frequent.— Consisting of suberect, rather 

 thick, irregular, branched filaments, articulated above ; among which, 

 everywhere the sporidia are dispersed. It appears from the account 

 of Fries in the Elenchus, v. 2, that Nees,/ 90, had principally in view 

 Dacr. tortus, Wdld. ; his figure consequently differs somewhat from the 

 very accurate one of Dr. Greville. The comparatively large, obtuse, 

 jointed threads, will at once distinguish this from small specimens of 

 Tr. mesenterica, not to mention the soft and pulpy consistence, 



41. Agyrium. Fr. Agyrium. 



Peceptacle convex or spherical, even, compact, wax-like, 

 when moist gelatinous, at length breaking up into sporidia. — 

 Named from «, without^ and yvoa;^ a ivrinkle, 



1. A. rufum, Pers. (red Agyrium) ; gregarious convex or 

 spherical compact, M'hen moist flesh-coloured, Avhen dry red- 

 brown. Fr. Syst. Myc. v. 2. p. 232. Scler. Stiec. ! n. 280. 

 Grev. Sc. Crypt. Fl. t. 2S'2.— Stictis rvfa, Pers. 06s. 2. t. 6.f. 

 6. (fde Fr.) Tremella stictis, Pers. Syn. p. 028. 



On old dry wood, especially of fir. Appin, Capt. Carmichael. — 

 About ^ of a line broad, often seated on a whitish spot. 



42. Hymenula. Fr. Hymenula. 



Beceptacle scarcely distinguishable from the hymerdum^ flat, 

 adnate, even, of a soft coriaceous consistence very thin persis- 

 tent. — Name, •j,a?ji', a membrane. 



1. H. vulgaris^ Fr. (common Hymenula) ; elongated varia- 

 ble even pallid brown when dry, circumference adnate. Fr. 

 Syst. Myc. v. 2. p. 234. Loud. Hort. Brit. p. 486. 



On nettle stems. Introduced on the authority of Hort. Brit. 



VI. ScLEROTiACEi.* (From Sclerotium.) Peceptacle various 

 more or less compactly fleshy. Sporidia free, subemergent. 



43. Pyrenium. Tode. Pyrenium. 



More or less globose, rootless ; outer coat even of a fila- 



* I am inclined to think that the correct «* ideal notion" (see Fr. Syst. Myc. 

 V. 2. p. 269.) of Sclerotiacei is not that of concrete Coniomycetes, but rather of 

 Hyphomycetes. Several species of Sclerotium, not to mention Pyrenium, have 

 beyond all doubt a distinctly filamentous structure, and Sclerotium varium 



