HepaticcB?^ 



FLORA OP NEW ZEALAND. 



131 



4. Plagiochila/*^, Hook. Muse. Exot. t. 89. G. L. et N. Syn. Hep. p. 649. Aulicularia occlusa, 

 Flor. Antarct.p. 146. t. 62./. 8. 



Hab. Northern and Middle Islands : Dusky Bay, Menzies. Tararua mountains, and summit of 

 Oparapara, Colenso. Port Preservation, Lyall. Also found in Campbell's Island. 



A species in its larger forms nearly allied to P. conjugata, in its smaller to P. ansata. The small form named 

 by Dr. Taylor Aulicularia occlusa is very different in appearance, but clearly connected by intermediate forms. The 

 areolation is very unlike that of the Aulicularia, and resembles /. compressa only in size. No fructification has yet 

 been observed; that figured in the < Musci Exotici' has been pointed out by Dr. Taylor to belong to some Aneura 

 accidentally mixed with the specimens. 



5. Plagiocliila ansata, Hook. fil. et Tayl., Flor. Antarct.p. 425. t. 156./. 6. 



Hab. Middle Island : Port William, growing amongst Mastigobryum Novce-Hollandia (Nees), Lyall. 

 A native of the Falkland Islands.— It is stated in Flor. Antarct. that J. colorata differs from P. ansata (which 

 it much resembles) in having its leaves "united into opposite pairs at their bases;" but as this has not been noticed 

 by other authors, nor been observed in any of the many Antarctic specimens, it is evident that some other species 

 was intended. Plants with perianths have been picked out of Dicranum aciplylluwi, Hook. fil. et Wils., from Hermite 

 Island; they are shorter than that figured in Flor. Antarct., and the perianths are obovate, compressed, the mouth 

 truncate, denticulate. Involucral leaves somewhat ovate, dorsal margins entire, apex obliquely truncate, and having 

 thus two obtuse angles, the ventral margin with four or five small teeth towards the base. The areolation of this 

 species has a peculiar appearance, from the cells being interrupted with thick dark interstices; in this respect it 

 differs from all its near allies, and approaches nearer to P. circinalis, Lehm. et Ldbg. (P. hemicardia, Flor. Antarct. 

 p. 36, tab. lxiii. fig. 2, where however the magnified stem is represented too tall). The perianths in Lord Auck- 

 land's Island specimens are obconic, compressed, a little undulated above, the mouth entire, or, like the leaves, with 

 here and there a small short tooth. Involucral leaves like the cauline, but larger and covering the perianth. 



6. Plagiochila microdictyon, Mitten ; caule repente, ramis erectis elongatis fiexuosis prolifero-ramosis 



parce stolomferis, foliis patentibus imbricatis deltoideo-ovalibus margine dorsali integemmo recurvo in 



caulem longe decurrente, ventrali parce dentato vel integerrimo, involucralibus apice margineque ventrali 



breviuscule dentatis, perianthio oblongo compresso ore labiis apiculatis denticulatis. (Tab. XCIY. Eg. 6.) 



Hab. Northern Island : Bay of Islands, with P.prolifera, amongst Sendtnera attenuata, J. D. H. 



Rami bi-tripollicares. Folia e cellulis minutissimis viridibus subopacis areolata. 



More nearly allied to P. deltoidea, Ldbg., than to any other, with however but little external resemblance ; it 

 is perhaps nearer to P. retrospectant, Nees. The form of its leaves is very nearly that of P. deltoidea and of several 

 other species which, like P. cristata, Ldbg., have their leaves produced 'behind, giving the branches a triquetrous 

 appearance. The cells of the leaves are very minute.— Plate XCIT. Fig. 6 :— 1, a plant, natural size; 2, a portion 

 of the stem with leaves ; 3, a leaf as seen at the side of the stem ; 4, a perianth and involucral leaf :— all magnified. 



7. Plagiochila deltoidea, Ldbg., Sp. Hep. p. 132. t. 27 ; Syn. Hep. p. 55. P. gregaria, Hook. fil. et 

 Tayl. Lond. Joum. Sot. 1844, p. 564. Syn. Hep. p. 654. 



Hab. Northern and Middle Islands: Dusky Bay [Herb. Lind.]. Thomson's Sound, Lyall. On 

 beech, Tararua and Euahine mountains, Colenso. Bay of Islands, J. D. H. 



Very variable in size, appearance, and in the direction and curvature of its leaves. Tall specimens (Dr. Lyall's) 

 resemble P. macrostacliya, Ldbg., others (from Colenso) are much more slender than the form figured in Sp. Hep. P. 

 gregaria, Hook. fil. et Tayl., differs in appearance only; the form of the leaves and perianth is the same as usual. 



8. Plagiochila annotina, Ldbg., Sp. Hep. p. 150. t. 32. P. adiantoides, Hook. Muse. Exot. t. 90. 

 Hab. Northern and Middle Islands : Dusky Bay, Menzies. On Weinmannia and Vagus bark, etc., 



Tarawera, Colenso. Port Nicholson, Southern Island, Lyall. 



