Jachenes, by Babington $ Mitten.] FLORA OF TASMANIA. 358 
Gen. XVII. ENDOCARPON, Ach. 
1. Endocarpon? fragile (Tayl.!); “thallo cartilagineo lobato rufescente-cinereo subtus pallidiore, 
lobis imbricatis erectiusculis planis oblongis angulatis subforaminulosis gemmis granulatis marginalibus."— 
Tayl.! Lich. Antarct. n. 30; Nyland. Enum. Gen. Lich. p. 185. 
Has. On the ground, among Mosses, Gunn. 
“Patches 1-2 inches wide, scarcely } inch high. The fronds, rising from a narrow base, are crowded, 
plicato-convolute or imbricated, umber-coloured, . . . in the dry state very fragile. Sometimes large openings may 
be observed in the buds, apparently arising from the union of expanding buds.”-—Tayl.! l.c. The plant being 
barren, its genus, as Dr. Nylander justly observes, is doubtful. 
SuBorDErR 111. BYSSACEA. 
Tribe I. COLLEMACEZX. 
Gen. XVIII. PYRENOPSIS, NyZ. 
l. Pyrenopsis Tasmanica (Nyl. in Hb. Hook.; Syn. Lich. p. 97). (Tas. CC. Z.) 
Haz. Granite rocks, St. Patrick's River, Gunn. 
A full description may be seen in the work above cited.—PrATE CC. E. Fig. 1, portion of fertile state; 2, 
section of apothecium :—both magnified. 
Gen. XIX. COLLEMA, Ach. 
1. Collema thysanzeum (Ach. Lich. Univ. p. 653; Moug. et Nestl.! n. 453). 
Has. On bark, Cheshunt, Archer. 
The specimen agrees with Mougeot’s very well. 
2. Collema nigrescens, var. /eucocarpum (Bab. 1. c. p. 308). 
"Has. On bark, Circular Head, Gunn. 
3. Collema flaccidum (Ach.; Bab. l.c. p. 309). 
Has. On bark, Cheshunt, 4rcher. 
Mr. Archer has found at Cheshunt a species of Collema different from any of those described above, but has 
unluckily preserved only one specimen. It is unknown to us, and may be new. The dull-green thallus grows 
among Mosses, has membranous rounded lobes, in a young state resembling O. crispum, Schær.! Exs. n. 425 
(C. cheileum, Ach., according to Nylander, Syn. Lich. p. 111), but afterwards expanding into a larger frond, which 
is much sinuated, and tomentose beneath with rather shaggy down, as in C. saturninum, Auctt. (to which, how- 
ever, this cannot belong, not being a Lepfogium), and then resembling a young frond of Sticta Juliginosa.—Apothecia 
plano-concave, dull-red, fringed with the minute crenated thallod at margin, then convex, emarginate. 
Gen. XX. LEPTOGIUM, Fries. 
l. Leptogium tremelloides (Fries; Bab. l. c. p. 308; Nyl. Syn. Lich. pp. 124, 125). 
Haz. On bark, Chestnut, Archer. 
The specimens belong to the more brightly coloured form, called by authors Zeptogium (or Collema) azureum. 
Trise II. CENOGONIEZ. 
Gen. XXI. C(ENOGONIUM, Zär, 
1. Coenogonium Linkii (Ehr. Bab. l. c. p. 310). 
Has. On bark, in dense forests, Gunn. Cheshunt, Archer. 
VOL. II. Ae 
