344 FLORA OF TASMANIA. [.Zichenes, by Babington & Mitten. 
All the European forms occur in Tokmania, as well as a modification marked Usnea scabrida, Tayl., in Jas. 
Drumm. Swan Riv. Crypt., by Dr. Taylor. It is only a very fibrillated form of U. florida, Ach., not much different 
from U, strigosa. Mr. Lawrence has collected barren, sorediated forms, with a black base and blackish extremities, 
without fibrille, which are not very unlike U. melaxantha, at an altitude of 3,500 feet, on the bighest parts of the 
western range of mountains. 
2. Usnea angulata (Ach. Syn. Lich. p. 307; Bab. l.c. p. 269). 
Has. Various parts of the island, Gunn, Hooker, Lawrence; but all the specimens are barren. 
Mr. Gunn's specimens are above two feet long. 
3. Usnea melaxantha (Ach. Syn. Lich. p. 303; Bab. l.c. p. 269). 
Han. Arthur's Lakes, Gunn. On rocks, near the springs, Mount Wellington, Hooker, Mossman. 
Barren and sorediated, and very sparingly collected. 
Gen. II. EVERNIA, Ach. 
1. Evernia furfuracea? (Mann; Fries, Lich. Eur. p. 26). 
Has. Cheshunt, Archer, fertile. 
An aged, unsatisfactory specimen, black beneath, but above more resembling E. prunastri, Ach.; upper surface 
much corrugated. Possibly something different from E. furfuracea or E. prunastri. I have not seen a description 
of Evernia mundata, Nyl., from New Holland. 
Gen. III. RAMALINA, Ach. 
1. Ramalina calicaris (Fries, Lich. Eur. p. 30).—Approaching var. geniculata, Bab. 1. c. 
Haz. Esk, Launceston, completely investing shrubs of Hymenanthera angustifolia, Gunn. 
The specimens agree substantially with R. fastigiata, Ach., but still more with the form called R. geniculata 
by Dr. Taylor. 
B. ovalis, Bab.; thallo ovali plano tenuiore, apotheciis minutis, confertis.—R. ovalis, Zayl. ! MSS. 
Has. Tasmania, Gunn. 
Apothecia minute, scattered over the surface of the somewhat membranaceous, oval frond, which is 1-2 
inches long. One of the many modifications of the form called R. frazinea, Ach.—Laurer's var. membranacea, Bab. 
l. c., has the fronds narrower and longer, and the apothecia marginal; but it is perhaps N worth while to dwell 
on minute differences in this most variable genus. 
2. Ramalina pusilla (Fries, Lich. Eur. p. 29; Nyl. Enum. p. 99). 
Has. Macquarrie Plains, on decayed wood, Oldfield. Recherche Bay, dead twigs, Lake St. Clair, St. 
Patrick's River, Gunz. Cheshunt, on live bark and dead twigs, Archer. 
I have already, in the * Flora of New Zealand,’ expressed an opinion that this is not distinct from the foregoing. 
Gen. IV. PELTIGERA, Hofm., Fries. 
1. Peltigera polydactyla (Fries, Lich. Eur. p. 46; Bab. l.c. 271). 
Has. Cheshunt, Archer. Collected also in Tam by Lawrence, Gunn, Stuart, and Hooker. 
Various specimens differ amongst each other in the consistency of the thallus ; some of Mr. Archer's specimens 
are coriaceous, others quite membranaceous. 
2. Peltigera horizontalis (Fries, Lich. Eur, p. 47). 
Has. Cheshunt, Archer. 
