134 



FLORA OF NEW ZEALAND. 



[Hepatic®. 



18. Plagiochila Dichoni, Hook. fil. et Tayl. j caule repente, ramis erectis rarnosis flexuosis dendroideis, 

 foliis patentibus ovato-oblongis apice truncato-bi-tridentatis margine dorsali recurvo integernmo ventrah 

 parce dentate, involucralibus latioribus spinoso-dentatis, perianthio obovato compresso labus rotundatis den- 

 ticulatis. (Tab. XCVI. Eg. 3.) 



Hab. Northern and Middle Islands : common, Menzies, Colenso, Stephenson, Lyall, etc. 



Luteo-virens. Rami 2-3-pollicares. Folia subremota, laxe imbricate, margine dorsali arcuato, ventrali sub- 

 recto, 4-5-dentato, apice oblique truncate, bi- vel tridentata. Perianthium elongato-obovatum. Plantm wmoulm 

 ramulis gracilioribus, spicis intermptis. Folia perigonialia imbricata, apice argute bi-tridentata. 



The species here referred to F. Dichoni differs from it apparently only in habit ; in the form of the leaves, den- 

 ticulation, areolation, and direction, they entirely agree.-PiATE XCVI. Kg. 3 :-l, male and female plants, natu- 

 ral size; 2, a portion of the stem with leaves ; 3, a portion of the leaf with cells ; 4, a perianth and mvolucral leal : 

 — all hut fig. 1 magnified. 



19. Plagiochila pleurota, Hook. ill. et Tayl, Fl. Antarct. p. 149. t. 63./. 4. P. cognata, I. c.p. 36. 



t. 62./. 3. 



Hab. Middle Island: Port William, amongst Metzgeria furcata (Nees), Lyall. 



The specific name, pleurota, has been retained because it gives the best idea of the plant. P. pleurota was 

 described from P. cognata with perfect perianths, which are hardly alate, but variously and strongly keeled : these 

 keels I find in the young perianth of P. cognata, whose leaves are a little larger and more distinctly dentate than in 

 P. pleurota. I do not find the smallest difference in the areolation. P. cognata is stated to have much affinity with 

 P decipiens, Hook., but this I do not recognize. P. pleurota is, it appears to me, compared correctly with P. cognata, 

 but not with P. gymnocalycina, Nees et Mont. The closest affinity exists between the present species and P. Dick- 

 soni, as well as P. Mrta, Tayl. MSS.* ; all possess the same yellowish-green colour and nearly correspond in 

 areolation, which, although not remarkably small, has an opaque appearance. 



Gen. III. LEIOSCYPHUS, Mitten. 



Perianthium terminale, teve, compressum, superne dilatatum, ore truncate integro vel dentate. In- 

 volucri folia et amphigastria caulinis similia. Involucra mascula spicffiformia vel e surculo in medio 

 ramo. Folium perigoniale basi saccatim incurvnm.— Caulis prostratus, repens, adscendensve, divergenh- 

 ramosm. Polia succnba,fere horizontal, ut plurimum Integra, rarius bifida, mcculenta, retis macuhs majus- 

 culis intercalaribus smpe valde conspicuis. Amphigastria parva, bi-quadrifida, basi smpe in folia subjecta 

 decurrentia. Plantse concinna, ccespitosm vel inter Muscog repentes, pallida? vel fuscescentes.—Leytoscjvhvs, 

 Mitten in Lond. Joum. Sot. 1851,^. 358. 



1. Leioscyphus repens, Mitten; caule repente vage ramoso, foliis imbricatis ovatis apice sinu parvo 

 obtuso bidentatis, amphigastriis parvis profunde bifidis laciniis subulatis extus unidentatis basi utrinque 



* P. Mrta, Tayl. MSS. ; caule ramisque subfasciculatis setis brevibus dense vestitis, foliis oblongo-ovatis remo- 

 tiusculis apice subbidentatis margine dorsali integerrimo latius recurvo ventrali apicem versus dentibus brnis vel 

 tribus decurvis armato. 



Hab. Falkland Islands ; growing among tufts of Bicranum aciphyllum. Hermite Island, amongst Jungermanma 



' ^mpollicares bipollicaresve, setis brevibus articulatis vestiti. Folia patentia vel erecto-patentia, marginibus 

 decurvis et apicem versus tantum dentata. . . 



A small and slender species, very near, and possibly a state of, P. acanthocaulis, Sulhvant in Lond. Journ. Hot. 

 1850, p. 317 ; yet it differs from the description there given in its leaves not being obovate, and in their margins 

 being entire except at the apex and just below it on the ventral side. 



