64. Jungermannia clavigera, Hook., Muse. Exot. t. 70.
Hab. Campbell's Island ; on rocks, and on the trunks of trees.
These specimens vary much in colour, in general they are of a richer brown, and less olivaceous than in the figure quoted, at other times they are nearly black.
65. Jungermannia ptycliant/ia. Frullania ptychantha, Mont, hi Toy. au Pole Slid Bot. Crypt. 1. 19. f. 3. et in Ann. So. Nat. 1843. p. 257. J. Myosota, nobis in Bond. Journ. of Bot. v. 3. p. 393.
Hab. Lord Auckland's group and Campbell's Island; on tlie trunks of trees, and on rocks on the lulls, abundant.
The periehaetial leaves in this species are three, closely embracing the base of the calyx ; the two lateral entire, obovate, having a strap-shaped acute curved inner lobe with reflexed sides ; the third or stipular lobe is oblong, deeply divided into recurved linear segments, whose margins are uneven but not toothed. Calyx cybndrical and smooth for way up, then ovate-rotundate, exserted, laciniated ; in the young state it appears terminated by a short tube.
This species may be known from all others by the minute, divergent auricles below the leaves, and more particularly by the plicate calyx. Montague compares it with F. gracilis, nodulosa and integristipula, and adds that besides the difference in the calyx, the first of these has the involucral leaves serrated, and in the two others the stipules are entire.
66. Jungermannia attophylla, Hook. fil. et Tayl. ; cauhbus laxe dispersis flaccidis graeilibus flexuosis subramosis, foliis distantibus erecto-patentibus patulisve late ovatis obtusis acutisve mtegriusculis laxe reticulatis, auriculis anguste oblongo-pyriforrnibus clavatisve incurvis a folio divergentibus, stipulis minutis bihdis segmentis lanceolatis saepius clavatis. (Tab. LXVI. Fig. I.)
Hab. Campbell's Island ; on the hills, rare, growing with other Jungermannia.
Caules 2-3 lin. lougi, parce ramosi; rami alterni, siccitate subatri, madore lsete sanguineo-purpurei. Folia forma sat varia, inferiora longiora, late ovata v. elliptica, obtusa v. rarius acuminata, integerrima v. bi-tridentata, cellulis pro planta maximis, auriculis pedicellatis majusculis erectis interdmn deflexis.
A beautiful little species and one of the smallest that is known of this subgenus ; as in /. clavigera the lobes of the stipides are often replaced by club-shaped amides.
Plate LXVI. Fig. I. — 1, a specimen of the natural size ; 2 and 3, front and back view of leaves ; magnified.
67. Jungermannia rostrata, Hook. fil. et Tayl.; caule exiguo repente subpinnathn ramoso, foliis subapproximatis patcntibus rotundatis subapiculatis integerrhnis lobo inferiore oblongo-lanceolato appenchculato, stipulis minutis rotundatis bifidis integerrhnis, perigoniis obovatis rotundatis, periclnetiis oblongo-rotundatis, calyce obovato apice tubuloso basi angusto lineari.
Hab. Lord Auckland's group ; on Parmelia enteromorpha, Ach.
Caspites 1-2 unc. lati, rufo-brunnei. Caules minuti, graciles. Folia rotundata, lobulo inferiore magnitutUne superioris ; perichatialia oblonga, apiculata, incurva, marginibus lobuh inferioris refiexis. Calyx perichaetio bis longior.
The present species bears much general resemblance to J. lobulata, Hook., differing from it in the smaller size, the narrow base of the calyx, which is of a different and less trigonous form, being wider above, and in the acute or apiculate leaves of the perichcetium. It is as small as the previous species.
68. Jungermannia reticulata, Hook. fil. et Tayl. ; cauhbus implexis prostratis subpinnatim ramosis,
