Page:The Botany of the Antarctic Voyage.djvu/186

164 ramis brevibus, foliis distichis imbricatis patentibus concavis late rotuiidatis apice recurvis superioribus late ovatis grosse dentatis, aurieulis interdurn nullis superioribus nunc bifidis seginento exteriore clavato interiore subulato, stipulis bi-quadripartitis. (Tab. LXVI. Tig. II.)

Hab. Lord Auckland's group ; rocks on the mountains.

Ceespites 2-3 unc. lati, planiusculi, rupibus appressi, intertexti, nigrescentes, nunc pallidiores, innovationibus laete purpureis. Canles sub 2 unc. longi, interdurn elongati, ramis plerumque brevibus. Folia tenerrima, valde pellucida, areolis majusculis, inferiora integerrima, ssepe lobulo intus aucta. Stipula concavse, profunde partitas, non-nullis v. omnibus clavatis.

This is a very beautiful microscopic object, and though allied to /. clavigera is very distinct from it. The lower leaves are sometimes nearly reniform, with no auricle whatever, but the most remarkable differential character lies in the very lax reticulation of its cells

Plate LXVI. Fig. II. — 1, a specimen of the natural size; 2 and 3, leaves; 4, 5 and 6, stipules; magnified.

69. Jungermannia aterrima, Hook. fil. et Tayl.j pusilla, caule implexo procumbente vage ramoso, foliis imbricatis patentibus convexis rotundato-oblongis integerrirnis marginibus recurvis, aurieulis late oblongo-pyriforrnibus inflatis, stipulis minutis ovatis bipartitis segmeutis lanceolatis basi extus unidentatis, perigoniis rotundatis, foliis perichsetialibus integerrirnis incurvis. (Tab. LXVI. Tig. III.)

Hab. Lord Auckland's group ; on alpine rocks, mixed with Andrecea and other mosses.

Ceespites nigri, apicibus nitidis rarius purpurascentibus ; ramis subsolitariis. Folia rotundata v. late et oblique ovata. Stipula bipartite, integrae v. utrinque dente majusculo extus aucto et hinc quadrifidfe. Planta plerumque monoica. Perigonia breviter pedunculata, arete imbricata, rotundata, superne longitudinaliter sidcata, marginibus foliorum valde incurvis. Periclicetii foKia tria, secunda, valde concava, corpora tria rotundata referentes. This has some points of affinity with the /. fragilifoUa, Tayl., a species lately observed in Ireland and Switzerland, which is equally minute but not so uniformly black and sliining, and has the leaves less densely cellular, and the perichfetial ones dentate.

Plate LXVI. Fig. III. — 1, a specimen of the natural size; 2, 3 and 4, leaves; 5 and 6, stipules; 7, perichsetial leaf; magnified.

70. Jtjxgermannia congesta, Hook. fil. et Tayl.; csespitosa, caule procumbente ramoso, foliis imbricatis patentibus hitegerrimis late ovatis rotmidatisve subapiculatis, auricula inflata oblongo-pyriformi, stipulis minutis ovato-rotundatis bifidis integerrirnis, foliis perichaetialibus oblongis apiculatis integerrirnis albidis. Hab. Lord Auckland's group ; on rocks and on the bark of trees.

CcBspites extensi, sub 2 unc. lati, pahide flavo-brunnei. Caules gracdes, sub 2 unciales, pinnatim ramosi; ramis erecto-patentibus, ssepe ascendentibus v. sursum curvatis. Folia valde convexa, plerumque apiculata, 'auricula caule remota infra marginem foKi extensa. Stipula integerrirnae, caule vix latiores, apicem versus bifida, segmentis acutis. Folia perichcetialia erecta, integerrima, acuminata, duobus lateralibus oblongis lobulo inferiore margine inflexo, stipulari in segmenta duo lanceolata apiculata integerrima fissa.

Very similar to the /. ptgehantha, Mont., but the whole plant much smaller, the auricles occupy a different position, and the perichfetial leaves are of a different form. The barren perichaetia which have roimded summits, are probably modified in the perfect plant. Prom J. aterrima, to which it is in some respects allied, it may be known by the larger size, pale colour, acute perichaetial leaves, and, above all, by the entire stipules.