730 TREMELLA 



or pyriform; smooth, or punctate; producing sporidiola on germina- 

 tion, or tufts of conidia, that bud in a yeast-like manner. Hyphae 

 filamentous, thin, gelatinous, sometimes inclosing mineral concretions, 

 which form an irregular central nucleus. Growing on wood, rarely on 

 the ground. 



I. Foliaceous, divided up into lobes, and variously twisted. 



2486. T. fimbriata (Pers.) Fr. Bull. Hist. Champ. Fr. t. 272, as Tre- 

 mella verticalis. Fimbriata, fringed. 



R. 5-7'5 cm. high and broad, olivaceous, inclining to black, erect, 

 corrugated; lobes flaccid, incised at the margin, undulato-fimbriate. 

 Flesh gelatinous, very soft. Spores white, " subpyrif orm " Massee, 

 "5-7 /x long" Moll. Caespitose. Darkening water when soaked in it, 

 and staining the fingers black. Dead branches, especially alder. Nov. 

 Feb. Rare. 



2487. T. frondosa Fr. Bull. Hist. Champ. Fr. t. 499, fig. T, as Tre- 

 mella quercina. Frondosa, leafy. 



R. 10-12 cm., yellow inclining to pale, or pale pinkish yellow, spathu- 

 late, or tongue-shaped, large, even, plicate at the base; lobes gyroso- 

 undulated. Flesh concolorous, gelatinous, thin, except at the base. 

 Spores white, subglobose, apiculate at the base, 8-10/z, 1-2-guttu- 

 late. Caespitose. Stumps, and fallen branches, especially oak. July 

 Dec. Not uncommon, (v.v.) 



2488. T. foliacea (Pers.) Fr. non Bref. Bres. Fung. Trid. n, t. 209, 

 fig. 1. Foliacea, leafy. 



R. 3-10 cm., cinnamon flesh colour, rarely deep brown, or tinged 

 umber violaceous, very much lobed and waved, segments thin, springing 

 from a plicate base. Flesh paler, gelatinous, subdiaphanous. Spores 

 white, minutely punctate, globose, 5-7 /LI; basidia 15-16 x 10-14/A. 

 Hyphae 1-4/x in diam. Caespitose. Coniferous stumps, and branches, 

 more rarely on deciduous trees. July Nov. Not uncommon, (v.v.) 



2489. T. lutescens Pers. Pers. Icon, et Descr. t. 8, fig. 9. 



Lutescens, becoming yellow. 



R. 13 cm., yellowish, tubercular, then undulato-gyrose, lobes entire, 

 naked. Flesh yellowish, gelatinous, subdeliquescent, pellucid. Spores 

 white, "oval elliptic, 10-16 x 7-10/u, 1-pluri-guttulate ; basidia ovoid, 

 19-25 x 17-18/i. Hyphae 1-3/x in diam." Bourd. & Galz. Stumps, 

 and fallen branches. Aug. May. Common, (v.v.) 



II. Brain-like, with obtuse, and twisted veins. 



2490. T. mesenterica (Retz.) Fr. Rolland, Champ, t. 105, no. 237. 



/ie<ro9, middle; evrepov, intestine. 

 R. 1-8 cm., orange,, variously contorted, brain-like, plicato-undu- 



