144 FLOKA ANTARCTICA. [Auckland and 



XXXIV. HEPATICLE, Jms. 



(By Dk. Thomas Taylor* and J. D. Hookek.) 



1. JUXGERMAXNIA, L. 



(1. Gym> t ohiteion, Nees.) 



1 . Juxgermanxia sfj/gia, Hook. fil. et Tayl. ; perpusilla, caule erecto laxe csespitoso ramoso, foliis 

 erectis subinibricatis appressis obovatis obtusis integris v. emarginatis, periclisetiis rotundatis caule duplo 

 latioribus. (Tab. LXII. Fig. IV.) 



Hab. Campbell's Island; on rocks on the lulls, growing amongst other Hepatica and Mosses. 



Caides 2-3 liu. 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, rnargine superiore interdum scariosa. Pericluetia subrotunda, foliis imbri- 

 catis, latiusculis, ad apices albidos plerumque scariosis. 



A very inconspicuous little species, approaching /. 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 perichsetia sessile and round. Its colour is like Ch/mn. adustmn, Nees, a German plant, with short and 

 simpler stems. 



Plate LXII. Fig. IV. — 1, a plant of the natural size; 2, a specimen, magnified; 3, stem and leaves; 4, leaf: 

 both magnified. 



2. Jtj>'gerila>~n t ia acinacifolia, Hook. fil. et Tayl. ; atro-fusca, caulibus erectis csespitosis parce rarnosis, 

 foliis secundis ante imbricatis erectis acinaciformibus integerrirnis apice rotundatis demum scariosis concavis 

 atro-purpureis. (Tab. LXII. Fig. V.) 



* The liberal manner in which the most eminent Naturahsts 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 

 Hepatica and Liehenes. The large amount of Jungermanmia 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 woidd 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 shoidd 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 sbght 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 cither unite these with the plants of other lands, or tend still further to 

 prove them distinct. 



