32 CRYPTOGAMIA ANTARCTICA. [Auckland and 
XXXIV. HEPATICA, Juss. 
(By Dr. Tomas Tavron* and J. D. HOOKER.) 
1, JUNGERMANNIA, Z. 
(1. GYMNOMITRION, Nees.) 
1. JUNGERMANNIA stygia, Hook. fil. et Tayl.; perpusilla, caule erecto laxe ceespitoso ramoso, foliis 
erectis subimbricatis appressis obovatis obtusis integris v. emarginatis, perichetiis rotundatis caule duplo 
latioribus. (Tas. LXII. Fig. IV.) 
Has. Campbell’s Island; on rocks on the hills, growing amongst other Hepatice and Mosses. 
Caules 2-3 Yin. longi, crassiusculi, superne fusco- v. atro-purpurei, inferne fusco-olivacei vage ramosi; ramis 
divaricatis. Folia minima, subsecunda, alterna, vix imbricata, obovata v. oblonga, apices versus obtusos late emar- 
ginata, segmentis obtusis, rarius integra, margine superiore interdum scariosa. Perichetia subrotunda, foliis imbri- 
catis, latiusculis, ad apices albidos plerumque scariosis. 
A very inconspicuous little species, approaching J. concinnata (Lightf.), of which. it is probably the repre- 
sentative in these islands. The leaves are, however, more distant, never bifid at the apex, the stems slenderer and 
the perichetia sessile and round. Its colour is like Gymn. adustum, Nees, a German plant, with short and 
simpler stems. 
Prate LXII. Fig. IV.—1, a plant of the natural size; 2, a specimen, magnified; 3, stem and leaves ; 4, leaf: 
both magnified. 
2. JUNGERMANNIA acinacifolia, Hook. fil. et Tayl. ; atro-fusca, caulibus erectis ceespitosis parce ramosis, 
foliis secundis ante imbricatis erectis acinaciformibus integerrimis apice rotundatis demum scariosis concavis 
atro-purpureis. (Tas. LXII. Fig. V.) 
* The liberal manner in which the most eminent Naturalists in each department of Cryptogamic Botany have 
afforded their cooperation, has removed the diffidence I should otherwise have felt in publishing this difficult portion 
of the Antarctic Flora. To Dr. Taylor’s extensive knowledge and keen discrimination I owe the diagnoses of the 
Hepatice and Lichenes. The large amount of Jungermannia which were collected, and the entangled manner in 
which they delight to grow, rendered their separation a task demanding no ordinary patience and skill. Further, 
the microscopic investigation of eighty different species and a much greater number of specimens, entailed upon that 
gentleman and myself an amount of labour which we would fain hope has resulted in the correct determination of a 
collection so unexpectedly novel and interesting. After a thorough examination by Dr. Taylor, the specimens have 
passed twice under my own eyes, preparatory to the completion of the descriptions and the drawings, which latter 
have been further revised by Mr. Fitch when transferring them to the stone ; this severe scrutiny will, it is to be 
trusted, reduce the errors into which I should otherwise personally have fallen, to a very small number. 
Amidst so many new species it is not to be wondered that some are advanced with hesitation. In a tribe of 
plants so minute, a casual resemblance or a slight variation may often lead (without reference to the microscope) on 
the one hand to a union of what are not the same, and on the other to a multiplication of species. The difficulty of 
holding a middle course between these extremes is acknowledged. Our plan, when investigating the plants of new 
countries, so remote from any whose productions are explored, has been, to consider tangible characters, though 
often slight, as specific differences ; at the same time stating the amount of difference, and hoping that future ob- 
servers may obtain such materials as will either unite these with the plants of other lands, or tend still further to 
prove them distinct. 
Campie 
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J. periods, 
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might easly 
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