82 CRYPTOGAMIA ANTARCTICA. [Auckland and 
XXXVI. LICHENES,* Z. 
(By Dr. Tuomas TAYLOR and J. D. Hooker,) 
1. USNEA, ۰ 
1. Uswza plicata, Ach., Syn, Lich. p. 305. Engl. Bot. t.257. Scherer Lich. Helv. no. 401. | 
Var. 8, hirta, Ach. l.e. Scherer, no. 399. 
Has. Lord Auckland’s group and Campbell’s Island ; both varieties, abundant. | 
The variety 8, in Lord Auckland’s group, is evidently the original plant, from which the U. hirta varies, and 
both are undoubtedly forms of U. florida ; the latter, in its ordinary fruiting state, does not attain a high northern or 
southern latitude, being replaced by the U. melawantha, which almost reaches the limits of Antarctic vegetation. 
We have little hesitation in affirming (with the author of the British Flora) that not only all the English species 
of Usnea are different aspects of one plant; but also that it is the only individual of the genus which we know to 
inhabit the temperate and warm parts of the globe. 
2. UsneaA barbata, Ach., Syn. Lich. p. 306. 
Var. 8, sulphurea ; pallide straminea v. sulphurea. 
Has. Lord Auckland’s group and Campbell’s Island; the var. 8 only, but abundant. 
This differs from the European plant in no respect but its pale sulphur or lemon colour; it is plentiful through- | 
out Tasmania, Fuegia, and the Falkland Islands, and is decidedly a state of U. hirta B, hardly distinguishable from i 
U. hirta itself, as the most casual observation in these islands will prove. It is often detached from its original place | 
of growth, and, being carried by the winds over the barren hills, is found in great abundance, sticking to low 1 
bushes and even to the rigid shrubby thallus of U. melawantha, in Fuegia and the Falklands. Some of the slenderest ۱ 
states are with difficulty to be discriminated from the genus Cornicularia, the filaments being brittle and the central 
thread not very apparent. | 
2. RAMALINA, Ach. 
1. Ramazixa inflata, Hook. fil. et Tayl.; thallo in ceespitem orbicularem congesto pallide flavo v. albido 
dichotome ramoso fistuloso turgido submembranaceo intus vacuo, lobis fistulosis intus stuppeis nunc fora- 
minulosis ultimis acuminatis, apotheeiis substipitatis concavis, disco eoncolore pruinoso, margine inflexo | 
integerrimo. Cetraria inflata, nobis, in Hook. Lond. Journ. of Bot. vol. iii. p. 646. (Tas. LXXIX. Fig. I.) 1 
Has. Lord Auckland’s group; on rocks near the sea. 1 
Planta cespitosa, albida, siccitate rigidiuscula, madore flaccida, membranacea, pellucida, brunneo picta. Phallus 
e basi subscutata ramosissima, 1-2-uncialis, cavus, inflatus, paulo compressus ; ramis erectis, sub 3-4 lin. latis, fistu- 
losis, sublacunosis, raro pertusis, intus vacuis v. parce stuppeis, extus lzevibus, ramulis alternis angustatis. Apothecia 
lateralia v. terminalia, oblique inserta, stipite brevi; disco planiusculo, sub 3 lin. lato, concolori v. fusco-pruinoso ; 
* [n arranging these species of a most variable Order of plants, the Synopsis of Acharius is followed, because it 
appears to us the more natural. "That the precise plant referred to, under his name, may be the better understood, 
we have cited two works, which seem particularly worthy of attention, from the discrimination which the authors 
have shewn in selecting a variety of forms; these are the ‘Lichenes Helveticee’ of M. Scherer, and the ‘ Stirpes 
Cryptogamicee Voges. Rhenan.’ of Mougeot and Nestler. 
