Pl, cell. aph. 3. HOMOTHALAMEZ. 85. Leptog. 401 
Lichen tremelloides, Lin. Supp/. Pl. 450. 
Parmelia tremelloides, Achar. Bicth. Lich. 224. 
Collema plicatum, Hoffm. Pl. Lich. 2,41. 
Collema tremelloides, Achar. Lich. Univ. 655. 
Ox trunks of trees and among mosses. 
2. Leptogium marginellum. Edged leptogium. 
Thailus ‘jeaflike, ‘membranaceous, nearly transparent, 
slightly wrinkled, sea-green; /oles rather long; edges wavey, 
pleated, crisp; apothecia minute, marginal, iron-brown 3 
edge pale. 
Lichen marginellus, Bern.in Schrad. J. Bot. 1799, 21. 
Parmelia margine!lla, Achar. Weth. Lich. 225. 
Collema marginale, Hoffm. Pl. Lich. 2,47. 
Collema marginellum, Achar. Lich. Univ. 696. 
Upon mosses. 
3. Leptogium lacerum. Torn leptogium. 
Thallus \eaflike, membranaceous, nearly transparent, 
slightly wrinkled in network, sea-green; loles small, rather 
tiledlike, irregularly jagged, toothed, fringed ; apothecia 
scattered, slightly concave, red, edge pale. 
Lichenoides saxatile tenue rufescens, Dillen in Rati Syn. 77, 89. 
Tremella lichenoides, Lin. S. P. 1625. 
Lichen tremelloides, Huds. Fl. Angl. 537, 
Lichen Tremella, Roth FI. Germ. 503. 
Lichen iacer, Engl. Bot. 1982; Achar. Prod. 135. 
Parmelia laciniata, Achar. Meth. Lich. 225. 
Collema lacerum, Achar. Lich. Univ. 637. 
On the ground among mosses. 
VII. 86. POLYCHIDIUM. Acharius. Polychide. 
Thallus very finely jagged and branched. 
1. Polychidium subtile. Fine polychide. 
Thallus slightly starlike, jaggs very narrow, linear, 
pressed close, ‘<ubdivided, blunt, “radiating, edge smooth; 
apothecia central, rather flat, colour of ‘the thallus, edge 
thin, not cut. 
Lichen subtilis, Schrad. Spic.95; Dicks. Crupt. 4,25; Engl. Bot. 1008. 
Parmelia subtilis, Achar. Meth. Lich. 243. 
Collema subtile, Achar. Lich. Univ. 659. 
On clay and limestone. 
Scarcely visible to the naked eye, but grows in patches. 
2. Polychidium éenuissimum. Thinnest polychide. 
Thallus rather tiledlike: ;aggs minute, linear, many-cut, 
unequal, granular, rather pointed, very crowded; apothecia 
scattered, “rather flat, reddish, edged. 
VOL. I. 2D 
