244 MR. W. MITTEN ON A NEW HEPATICA. 
habit and foliage to some well-known species of Plagiochila, as 
P. opposita, Nees, and P. conjugata (Jungermannia, Hook. Musci 
Exot. t. 91), that it was hardly to be expected that the fructifica- 
tion could be so different; add to this the fragility of the peri- 
anth itself, which seems partially decayed by the time the capsule 
has arrived at maturity, and it is easy to account for the error. 
A. MAGELLANICUS. Perianthio elliptico-oblongo, apice dentato ; invo- 
lucri folis parvis, dentatis.—Plagiochila Magellanica, Lindenberg, 
Sp. Hepat. 164; Synops. Hepat. 53. P. sphalera et P. unciformis, 
Hook. fil. et Tayl. Crypt. Antarct. t. 156. f. 5 et 8. 
Hab. Magellan, Montagne in Hb. Hook. Hermite Island, Cape Horn, Dr. 
J. D. Hooker. Staten Land, Menzies. Cordillera de Raneo, Chili, 
Lechler, No. 2943. Chimborazo, Jameson. Falkland Islands, Lech- 
ler, No. 104. Tasmania, Gunn, Hb. Hooker. 
Very variable in size, from half an inch to three inches in height, 
and the outline and denticulation of the inferior leaves is also 
variable; in the Tasmanian specimens all the leaves are entire, but 
there appears to be no other difference. 
A. LINDENBERGIANUS. Plagiochila Lindenbergiana, Lehm. in Linnea, 
iv. p. 367; Pugill. pl. iii. p. 53; Syn. Hepat. 59. 
Hab. Cape of Good Hope, Ecklon and Milne. 
Leaves rather more acute than is usual in the preceding species, 
but presenting no other difference; and unless some character is 
afforded by the perianth, as yet unknown, it can scarcely be 
distinguished. 
A. DICIPIENS. Foliis involucralibus rotundatis, concavis, brevidentatis ; 
perianthio ovato, ore parvo dentato.—Jungermannia decipiens, Hook. 
Brit. Jung. t. 50. Plagiochila decipiens, Nees et Mont. ; Lindenberg, 
Species Hepat. t. 12; Gottsche, Lindenberg et Nees, Synops. Hepat. 
p.24. Plagiochila campylodonta, Hook. fil. et Taylor in Lond. Journ. 
Bot. 1845, p. 80; Synops. Hepat. p. 639. Gymnanthe decipiens, 
Mitten in Journ. of the Proc. Linn. Soc. vol. vii. 
Hab. lreland, first gathered by Miss Hutchins. St. Helena, Dr. Hooker. 
Fernando Po, Mr. G. Mann. Quito, Prof. Jameson. Peru in Monte 
Tunguragua, Mr. Spruce. 
The discovery of the perianths on Mr. Spruce's specimens has 
at length set at rest the hitherto doubtful place of this species, 
which has considerable resemblance to some species of Plagiochila 
and Gymnanthe. 
The position of this genus appears to be near to Sphagnecetis, 
Nees ; and in the substance of its leaves, male inflorescence, and 
form of the perianth it entirely agrees; but differs in the erect 
branches, absence of stipules, and in the insertion of its appressed 
secund leaves. 
