* 
HEPATICH NOVA ZELANDLE, &c. 577 
quite the structure of our Hygropila iniqua ; they are very 
thin, pellucid, of a lively green, the older somewhat dusky. 
No midrib is observable, but the rootlets beneath are clust- 
tered along the longitudinal axis of the lobes. The fronds 
are irregularly lobate, but the lobes in our specimens have 
not a sinus at their summits as in the other species of this 
genus, 
Marchantia, L. 
53. M. polymorpha, L, 
Has. New Zealand. 
IV.—SPEciEs TASMANIA. 
JUNGERMANNIA, L. 
(Gottschea, Nees v. Esenbeck.) 
1. J. Hombroniana, Montagne in Annales des Sciences Natu- 
relles, Avril, 1843. 
Has. Van Diemen’s Land. 
(Plagiochila, Nees v. Esenbeck.) 
2. J. abbreviata, nobis ante, p. 374. 
Haz. Van Diemen's Land. 
3. J. opisthotona, n. sp.; caule czespitoso erecto apice recurvato 
ramoso, ramis erectis, foliis arcte imbricatis erectis rotun- 
datis hinc gibbosis illinc margine reflexis dentatis dente 
apicali majore, calyce terminali oblongo compresso trun- 
cato ciliato. 
Has. Van Diemen's Land. : 
Tufts wide, dusky olive-green. Stems about two inches 
high. Leaves clustered into a compressed capitulus at the 
top, which is bent back; each lower leaf is imbricated on at 
least one half of the one immediately above, erect, adpressed 
even in the moistened state, rotundate or very widely ovate, 
obtuse, with a remarkable tooth on the summit, both mar- 
‘gins dentate; perichetial leaves longer and more upright 
than the cauline, closely adpressed to the base of the calyx - 
Which is three tines their length. Perigonia in short slender 
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