Page:The Botany of the Antarctic Voyage.djvu/473

Falklands, etc.] 49. Jungeemannia divaricata, Hook. ill. et Tayl. ; caule implexo procutnbente ramoso, foliis approximatis suberectis secuuclis e basi angusta oblongis convexis bifidis segmentis lanceolatis acuminatis divaricatis subflexuosis, stipulis bifidis segmentis subulatis extus uiiidentatis. Nobis in Bond. Joum. Bot. vol. v. p. 367. (Tab. CLXI. Fig. VIII.)

Hab. Hemiite Island, Cape Horn ; in tufts of mosses, &c.

Caspites pallide flavo-virescentes. Caules 1 unc. longi, basin versus praecipue ramosi. Folia laxe imbricata, grosse reticulata, ad medium in segmenta dua acuminata divaricata fissa, margine dorsali decurrente et reeurvo. Perigo?^ in spicas temiinales disposita ; folioiis arete appressis, basi tumidis, antheriferis, segmentis foliis caulinis brevioribus.

Allied to /. leptantha, but a smaller plant, with leaves of a different shape, being narrower at the base and deeply divided beyond the middle. The stipides are bipartite.

Plate CLXI. Wig. V ill. — 1, plant of the natural size; 2 and 3, branch and leaf; 4, leaf; 5, stipule: — all magnified.

50. Jungermannia sahdetorum, Hook. fil. et Tayl.; minima, caule caespitoso crassiusculo prostrato ramoso, rainis ascendentibus apice recurvis, foliis approximatis subremotisve erecto-patentibus secundis sub-quadratis angulis obtusis integerrimis apice retusis laxe cellulosis, stipulis minutis ovatis lanceolatisve bipar- titis, segmentis subulatis incurvis. Nobis in Loud. Joum. Bot. vol. iii. p. 469. (Tab. CLVIII. Fig. VIII.)

Hab. Falkland Islands ; on wet sand and clay-slate.

Caspites sub 2 unc. lati, pallide flavo-virides. Caules breves vix unc. longi. Rami e caule prostrato erecti, curvati, demiun horizontales. Folia versus apices ramorum laxe imbricata, parva, madore homomalla, apice plerumque retusa v. eniarginata, rarius rotundata, basi late adnata, laxe cellulosa, paria ultima saepissinia appressa, apicibus ramulorum liinc compressis. Stipulce caule subangustiores.

Perhaps the most minute of the Lophocolea, from all the species of which its habit and the form of the leaves amply distinguish it.

Plate CLVIII. Fig. VIII. — 1, plant of the natural size ; 2, portion of branch, leaves, and stipules ; 3, leaf ; 4, stipide : — magnified.

51. Jungermannia rivalis, Hook. fil. et Tayl. ; flaccida, caXile caespitoso ascendenti v. erecto ramoso gracili, foliis disticbis laxe imbricatis approximatisve inferioribus remotis teneribus flaccidis oblongo-quadratis angulis obtusis integerrimis basi late aduatis decurrentibus apice retuso, stipulis ovatis bifidis segmentis integerrimis v. extus uiiidentatis. Nobis in Lond. Joum. Bot. vol. iii. p. 469. (Tab. CLVIII. Fig. VII.)

Hab. Falkland Islands ; on wet rocks, &c, near the sea, abundant. Caspites laxi, basi saepe submersi, atro-fusci, superne pallide olivacei. Caulis 1-2 unc. longus, ramosus, ramis erectis gracilibus, laxe foliosis. Folia tenerrima, membranacea et flaccida, minute areolata, basi lata decurreute, oblongo-rotimdata v. subquadrata, apice plerumque obscure retusa. Stipula caule vix latiores, basi subrotuudatae, v. late ovatse, bifidae ; segmentis integerrimis uni-dentatisve.

AlHed to J.planitiscula (Pt. 1. t. 63. f. 2), which is a larger plant, with differently shaped stipides. Also near the following, which, again, is smaller than either, with leaves of another form. Plate CLVIII. Fig. VII. — 1, plant of the natural size ; 2 and 3, leaves ; 4 and 5, stipules : — magnified.