94 HEPATICÆ ANTARCTIC. 
tenerrima pellucida uninervia margine dentata calyptra- 
que lineari longissima rosaceis, capsula lineari-oblonga. 
Has. Van Diemen’s Land. (Dr. Lyail.) 
Fronds two or three lines long, much shorter than the 
calyptre. Involucral scales around the base of the calyptra 
four or five-toothed, setaceous above, erect. Capsule often 
emitting the seeds and spiral filaments from one lateral 
opening, but the pieces into which it dehisces are various in 
number and size, the top of the capsule remaining entire. 
There is no green colour in any part of the plant. 
34. J. convoluta, n. sp.; fronde tenui elongato-oblonga uni- 
nervia subdichotoma margine undulato-involuta ex frondis 
disco prolifera, fructu in frondis discum sessili, calyptra 
subulata apice pistillifera, perigoniis lineatim supra frondis 
nervum congestis squamis minutis acuminatis laciniatis. 
Has. Ascension Island. 
Patches some inches wide; fronds scarcely half an inch 
long, sparingly branched, their margins variously twisted, 
frequently involute. A new frond has been observed to rise 
with a narrow base from the disk of the old, from over the 
nerve and towards the apex. The frond, sometimes, sends 
out a linear process at the summit which radicates. The 
pedicellated oval anthers are free, (that is, not immersed) 
each covered by a perigonial scale pointing forwards. 
(Aneura, Nees.) 
35. J. multifida, L. var. B submersa; fronde tenui pellucida 
elongata lineari albido-virescente plana parce subramosa; 
ramis vagis brevibus, perigoniis marginalibus alternis bre- 
vissimis. 
Has. Cape Horn. In water. 
One to two inches long. Some stems quite simple, others 
sparingly branched, all with alternate, marginal perigonia« 
Structure of the frond of close longitudinal cells. No fruit 
has been observed. Our European species is more carnose, 
is pinnated and of a deeper green colour. 
