148 FLORA ANTARCTICA. {Auckland and 



12. Jungermajjnia hemicardia, Hook. fil. et Tayl.; caule ascendente subtriangulari simplici v. ramoso, 

 foliis dense arcteque imbricatis erecto-patentibus oblique et late ovatis basi cordatis apicibus rotundatis mar- 

 ginibus integris v. superne denticulatis subconcavis, margine anteriore recurvo posteriore basi in lobulum 

 producto. (Tab. LXIII. Kg. II.) . 



Hab. Campbell's Island ; on exposed rocks, near the summits of the hills. 



Caspites fusco-olivacei, 1-2 unc. lati. Catties una cum foliis triangulares, f— 1 unc. longi, e rhizomate repente 

 ascendentes, simpliciusculi, rigidi, antice plani, profunde caualicidati. Folia arete imbricata, integra v. denticulata, 

 opaca, dense cellulosa, areolis minimis hexagonis. 



The leaves of this species meet back to back and are so closely imbricated that the stems appear triangular, 

 their anterior margins not touching but leaving a space which appears like a groove running down the whole length 

 of the stems, then- recurved margins are rather tumid and decussate on the opposite face. In general habit this 

 resembles the J. punctata, Tayl., a species recently detected both in Ireland and the Canary Islands, froin which the 

 gibbous or oblique leaves will readily distinguish it. 



Plate LXIII. Fig. II. — 1, a specimen of the natural size; 2, astern; 3, portion of a branch; 4 and 5, 

 leaves ; magnified. 



13. Jungermannia circinnalis, Lehm. Pugitt. Plant. IF. p. 64. Lehm. et Lind. Spec. Hep. p. 1 24. 

 t. 27. Gottsche, Lind. et Nees, Sj/nops. Hep. p. 53. 



Hab. Lord Auckland's group ; on rocks and on the lulls, rare. 



This agrees with authentic specimens of Lehmann's plant, except hi the summits of the stems not being so re- 

 markably eircinnate as they are described. Such circinnate summits, however, are truly perigonia, whose leaves are 

 smaller, more ventricose and erect than those of the stem ; and further, some of them contain in their axilla? a single, 

 rather large, peclicellated anther. Our specimens are about half an inch long, stout and curved ; the leaves much 

 more lax than in the former species. 



14. Jungermannia cogmta, Hook. fil. et Tayl.; parvula, fulva, caule erecto csespitoso subsimplici v. 

 rainoso, foliis laxe imbricatis patulis late ovatis v. elliptico-oblongis acuminatis paucidentatis basi attenuatis 

 decurrentibus, margine anteriore vix recurvo, calyce terminali perichaetio aequilongo vix curvato bilabiato 

 labiis ciliato-dentatis. (Tab. LXIII. Fig. III.) 



Hab. Lord Auckland's group; on alpine rocks, growing amongst stunted tufts of Hymenophyllum 

 multifidum. 



Caspites diametro 1-2 unciales, inferne brunnei, superne flavi v. flavo-fusci. Caules erecti, 1 unc. longi, subri- 

 gidi, inferne nudi, parce ramosi, anni prsecedentis ssepius innovati, apicibus subcurvatis. Folia distieha, subpatentia 

 v. divaricata, coriacea, apices versus 3-5 dentata, dente apicali majusculo acuminato, margine anteriore subrecurvo 

 decurrente ; foba pericha;tii erecta, elongata, magis dentata. 



This has much affinity to the /. decipiem, Hook., a very variable species in the form of the leaves, but in which 

 their cellules are much larger and more lax, while in this they are so dense as to be hardly distinguishable. The 

 European plant differs further from the present in a character alluded to by the authors of the ' Synopsis Hepati- 

 carum,' who remark, " J. decipiens ab omnibus congeneribus margine dorsab folii iimexo nee reflexo differt." 



Plate LXIII. Fig. III. — 1, a specimen of the natural size; 2, the same, magnified; 3 and 4, portions of stems 

 and leaves; 5, perichsetium and calyx ; magnified. 



15. Jungermannia ple?irota, Hook. fil. et Tayl.; casspitosa, caule erecto diviso v. parce ramoso, foliis 



