Page:The Botany of the Antarctic Voyage.djvu/480

444 83. Jungermannia parasitica, Hook. fil. et Tayl.; caule subirnplexo procumbente pinnatim ramoso, foliis subapproximatis patentibus valde concavis integerrimis v. obscure dentatis, lobo superiore triangulari-ovato acuto v. acuininato apice subrecurvo, inferiore oblongo acuminata, stipulis parvis obovato-quadratis bilobis lobis rotundatis integerrimis. Nobis in Lond. Jonrn. Bot. vol. iii. p. 477. J. marginalis, nobis, I. c. vol. iv. p. 91. (Tab. CLX. Fig. VI.)

Hab. Hermite Island, Cape Horn ; parasitical on /. uncialis, and amongst lichens on trunks of trees.

Caules gracillimi, minimi, oculo mido invisibles, pallide virides, inter Lichenes aliasque Hepaticas dispersi, unc. ltJngi, subpinnatim ramosi, rainis suberectis. Folia subremota, patentia, basi latiuscula, apicibus acuminatis, incurvis v. recurvis, lobo inferiore margine involuto subundidato.

This has precisely the habit and appearance of the Irish /. ovata, Tayl. MSS., an equally minute parasite, with stipules of the same form. The present differs from that in the shape of the more distant leaves, which are shorter, wider at the base, and more acute above. The whole plant is of a paler colour, and from the smaller size of the cells of the leaves their tissue is more dense. Plate CLX. Fig. VI. — 1, plant of the natural size ; 2, stem, leaves, and stipules ; 3, leaf; 4, stipule : — magnified.

84. Jungermannia rufescens, Lindb., in Gottsche, Lindb. et Nees, St/n. Hep. p. 366.

Hab. Staten Land, Menzies (in Herb. Hook.).

(14. Diplol^na, Nees.)

85. Jungermannia p isicolor, Hook. fil. et Tayl.; fronde laxe caespitosa erecta dicbotome divisa basi in stipitem teretem gradatim attenuate, lobis linearibus obtusis emarginatis uninerviis integerrimis. Nobis in Loncl. Jonrn. Bot, vol. iii. p. 478. (Tab. CLX. Fig. VII.)

Hab. Hermite Island, Cape Horn ; at the bottom of an alpine lake.

Frondes e radice repente clongato erecti, sub 3 unc. lati, pisicolores, demum flavescentes, parte inferiore atra, bis terve dichotome divisi, lobis plerumque madore concavis, e margine proliferi ; juniores basi rotundati, primuni liberi?, demum radices emittentes. Nervus validus, percurrens, siccitate tenuis, albescens, madore ddatatus, fronde concolor, axdbs acutis.

A very distinct and curious plant, allied to the /. tenuinervis, nob., of New Zealand, from which it may be known by its yellow-green colour, greater size, and taller habit, narrower and more elongated lobes, and, above all, by its being erect, differing remarkably in that respect from its northern allies, /. Hibernica, Hook., and /. Lyellii, Hook.

Plate CLX. Fig. VII. — 1, plant of the natural size ; 2, apex of frond : — : (15. Aneura, Nees.)

86. Jungermannia multifield, Linn.; Fl. Antarct. Pt. I. p. 166. Var. 0. submersa ; fronde anguste lineari-elongata pellucida parce ramosa plana, ramis brevibus, perigoniis marginalibus alternis brevissimis, cellulis densis.

Var. y. nana ; parvula, ramosa, cellulis latioribus brevioribusque.

Hab. Hermite Island, Cape Horn; var. a and /3, very abundant ; var. y, in a fresh-water lake amongst the mountains. Falkland Islands ; abundant.

An extremely abundant plant in the southern extra-tropical regions.