Page:The Botany of the Antarctic Voyage.djvu/178

156 ovato-oblonga v. subquadrata, basi lata decurrente, plerumque rotundata, apicem versus setis duabus subulatis divaricatis aucta, hinc quasi bieaudiculata, non raro autem truncata v. subemarginata, superiora interdum acuta v. apiculata. Stipulæ profunde bifidæ, sæpius in lacinias duas subulatas parallelas v. paulo divergentes partitæ, inconspicuæ.

37. Jungermannia planiuscala, Hook. fil. et Tayl.; laxe cæspitosa, caule procumbente ramoso, foliis membranaccis tenerrimis disticliis laxe imbricatis patentibus ovato-rotundatis basi obliquis latioribus decurrentibus iutegerrimis, stipulis ovatis apice bifidis utrinque unidentatis rariusve integris. (Tab. LXV. Fig. II.)

Hab. Lord Auckland's group; on wet rocks near the sea, in the beds of streams, &c., forming large patches.

Cæspiles majusculi, 3-4 unc. lati, fusco-purpurei, innovationibus pallide olivaceis. Caules nigricantes, sub 2 unc. longi, flaccidi, vage ramosi, procumbentes v. prostrati. Folia magnitudine varia, plerumque majuscula, 1½ lin. longa, laxe cellulosa, tenerrima, pellucida, apicibus rotundatis'sæpe recurvis, marginibus interdum undulatis. Stipulæ bifidæ, segmentis subulatis erectis approximatis.

This exhibits much the habit and mode of growth of the last, but is a widely different and far larger plant; it is very variable in size, some of the shoots on the same branch having leaves not half the length of others.

Plate LXV. Fig. II.—1, specimen of the natural size; 2, branch with stipule and leaf; 3, leaf; 4 and 5, stipules; magnified.

(9. Cheiloscyphus, Corda.)

38. Jtjngebmannia australis, Hook. fil. et Tayl.; cæspitosa, procumbens, caule ramoso, foliis imbricatis suberectis rotundatis basi superne sublobatis inferne decurrentibus, stipulis bipartitis varie sectis segmentis plerumque basi dentatis, fructu in ramis brevibus terminali, calyce oblongo curvato subcompresso bialato bilabiato labiis rotundatis obscure crenatis. (Tab. LXV. Fig. III.)

Hab. Lord Auckland's group and Campbell's Island; moist banks in the woods and on trunks of trees.

Cæspites 2-3 unc. lati. Caules robusti, suberecti v. procumbentes, vage ramosi, nunc inter Hepaticas abas solitarii, sub 1 unc. longi, fusco-brunnei, sæpe per totam longitudinem radicantes. Folia inferiora subpatentia, superiora imbricata, erecta, appressa, oblongo-rotundata, apicibus rotundatis integerrimis, cellulis plerumque majusculis opacis. Stipulæ forma variæ;, plerumque oblongæ et bifidæ, utrinque basi unidentatæ, segmentis divaricatis acuminatis, rarius subquadratæ, quadrifidæ, v. quadridentatæ. Calyx exscrtus, paulo curvatus, oblongus, basi cylindraceus, superne compressus, bialatus, alis subundulatis, ore obliquo bilabiato, labiis divergentibus obscure crenulatis.

The fertile branches of this plant are short, with about five pairs of leaves, of which the upper, or perichætial, are oblong, and the corresponding stipule is the largest and most deeply laciniated. A broken capsule, found within the calyx, contained rounded angular seeds and slender much-twisted spiral filaments, each formed of a double helix. The barren plant strongly resembles some states of J. polyanthos, L., but in the fertile plant the oblong winged calyx, the included calyptra, and the more divided and toothed stipules abundantly distinguish it.

Plate LXV. Fig. III.—1, specimen of the natural size; 2, branch and calyx; 3, leaves and stipule; 4 and 5, stipides: magnified.

39. Jungermannia Billardieri, Schwæg. Musc. Hepat. Prodr. p. 19. Hook. Musc. Exot. t. 61, Cheiloscyphus, Corda, Nees et auctorum.

Hab. Lord Auckland's group and Campbell's Island; abundant in the woods and in marshes on the hills.