164 PLOKA OE NEW ZEALAND. [Hepatica. 



Hab. Northern Island : watercourses, Titiokura, Colenso. 



There appears to be little difference between the specimens of this plant from various Antarctic regions (Euegia, 

 the Falkland Islands, and Kerguelen's Land) and those gathered in Brazil by Mr. Gardner, except that the leaves are 

 rather thinner in the latter ; but they are so much altered by drying that none of them revive very perfectly by mace- 

 ration, however long continued. 



Gen. XXIII. PETALOPHYLLUM, Gottscle. 



1. Petalophylkim Preissii, Gottsche; lamellis frondis marginem versus liberis costam versus connatis 

 loculos formantibus, G. L. et iV. Syn. Hep. p. 472. — Eiccia laminifera, Tayl. MSS. in Drummoncl's Swan 

 River Mosses. 



Hab. Northern Island : Pern hills, Hawke's Bay, Colenso. 



The Eiccia? tuherosa, Tayl. (Lond. Journ. Bot. 1846, p. 415), is possibly the male plant of this, or at least 

 of an allied species. The present is a West Australian species. 



Gen. XXIV. ZOOPSIS, Eooh.fil. et Tayl. 



1. Zoopsis argentea, Hook. fil. et Tayl., Flor. Infarct, p. 167. f. 66./. 6. G. L. et N. Syn. Hep. 

 p. 473 et 785. 



Hab. Northern Island : in various places, Colenso. Auckland, Lyall. 



This minute and curious species would appear to be of very frequent occurrence in New Zealand, being com- 

 monly intermixed with other Hepaticm ; and is found as far south as Lord Auckland's Group. The figure quoted 

 above, although giving a good general representation of the plant, does not show its more perfect state. In the 

 latter the margins have not that prominent cluster of cells, but the outer cells stand out like the teeth of a saw, and 

 each of them has at its apex a small tubular ciliiform appendage, which, at its base, is curved, so that these cilia all 

 point towards the apex of the stem. This peculiarity of structure seems analogous to the cilia which fringe the 

 margins of the fronds of Melzgeriafurcata. It is to be regretted that the fructification of this remarkable plant is 

 in too immature a state to afford any decided characters. 



Gen. XXY. PODOMITBPUM, Mitten. 



Involucrum ventrale, brevissime pedicellatmn, basi squamulis paucis cinctum. PeriantUum, tubu- 

 losuni. Anthera in spicis parvis brevipedicellatis congestaj. — Prondes ohlongce, stipitatas. 



1. Podomitrium Phyllanthus, Mitten. — Steetzia Phyllanthus, Nees. G. L. et N. Syn, Hep. p. 478. 

 Diplokena cladorhizans, Eooh.fil. et Tayl. Lond. Journ. Bot. 1844, p. 570. Jungermannia Phyllanthus, 

 Hook. Muse. Escot. t. 95. Flor. Infarct. p. 167. 



Hab. Common throughout the Islands : Bay of Islands, J. I). H, Colenso, Menzies, etc. On tree- 

 ferns, Southern Island, Lyall. 



Pound as far south as Auckland's Island. This genus differs abundantly from Steetzia, to which alone it can 

 be justly compared, in the ventral origin of its perianth and its pedicellate male spikes. In Steetzia the perianth is 

 dorsal, and the anthers are also dorsal and imbedded on each side of the nerve. From Symphjogyna it further differs 

 in the presence of a true perianth. The latter arises from a very short footstalk, which, like that of Sarcomilrium, is 

 surrounded by minute irregular scales, forming a kind of involucre ; in texture and form the perianth closely resembles 

 that of Steetzia Lyallii. The calyptra has a few barren pistils scattered over its upper surface, but is not echinulate. 

 Male spikes one line long, with numerous anthers imbedded in their substance ; they arise not from the central nerve- 

 like line, but towards the middle of the frond near to it, in the same manner that innovations have been observed to 



