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Pl.cell.aph. y. HOMOTHALAME-E. 85. Leptog. 401
Liclien tremelloide?, Lin. Suppi. PI. 430.
Parmelia tremelloides, .dehor, Mtth. Lich. 224.
Collemaplicaturo, Hoffm. PL Lich. 2,41.
CoUema tremelloides, Achar.Lich. Univ. 655.
On trunks of trees and among mosses.
2. Leptogimn marginellum. Edged lepiog'ium,
Thallus leaflike, membranaceous, nearly transparent,
sliorhtlv wrinkled, sea-o-reen : loles rather long: edsres wavev,
pleated, crisp ; apcthecia minute, marginal, iron-brown
edge pale.
Lichen tnarginellu?, Bern, in Schrad.J. Bot. 1799,21.
Partaelia marginella, Achar. Meth. Lich. 225.
Collema marginile, Hoffm. PI. Lich. 2,47.
CoUema marginelluin, Achar, Lich. Univ. 696,
Upon mosses.
3. Leptos'mm lacerum. Torn leptoglum.
Thallus leaflike, membranaceous, nearly transparent,
loLes small, rather
slightly wrinkled in network, sea-green ;
tiledlike, irregularly jagged, toothed, fringed ; apolhecia
scattered, slightly concave, red, edge pale.
Lichenoides sasaiile terne rufercen?. DilUn in Rati Syn. 77, S9.
Tremella lichenoides, Lin. S. P. 1625.
Lichen trenselloides, Hnds. Fl.Angl. 537.
Lichen Tremella, Roth FI. Germ. 503.
Lichen iacer, Engl, Bot. 19s2; Achar. Prod. 135.
Parmelia laciniata, Achar. Meth. Lich. 225.
Collema lacerurc, Achar. Lich. Univ. 657.
On the ground among mosses.
VII. 86. POLYCHIDIUM. Acharius. Polych'tde.
Thallus very finely jagged and branched.
1. Polychid'ium snltile. Fine poly chide.
Thallus slightly starlike, jaggs very narrow, linear,
pressed close, subdivided, blunt, radiating, edge smooth;
apothecia central, rather flat, colour of the thallus, edge
thin, not cut.
Lichen sublilis, Schrad. Spic. 95 : I>icl:s, Cript, 4, 55 ; Engl. Bot, lOOS.
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 tenuisiimum. Thinnest po-ychide,
Thallus rather tiledlike: 'agcrs minute, linear, many-cut,
unequal, granular, rather pointed, very crowded : apothecia
scattered, rather flat, reddish, edged.
TOL. I. 2d