368 
ST. HELENA. 
low with the stipule, which is of the same form but of half their 
size ; the perianth is narrowly winged at its angles, the aim being 
entile. Allied to L. connata, Swartz, but differing considerably in 
the outline of its leaves. 
944. fL. serrata, sp. nov. — Caulis repens. Folia explanata 
oblongo-quadrata, subinmqualiter bidentata, sinu rectangulari, mar- 
ginibus ubique denticulis brevibus serrata, cellulis parvis parietibus 
angustis pellucidis areolata, amphigastria parva profunde bifida, 
laciniis extus unidentatis. — Hab. Tristan d’ Ac unha, amongst Fis- 
sidens asplenioides, Milne. 
A small species, looking to the unassisted eye like a minute state 
of L. bidentata. 
1 late ob, f. b. 1, stems of the natural size; 2, a portion with 
leaves and stipule, magnified. 
Adelanthus, Mitt. Journ. Linn. Soc. vol. vii. 
945. A. decipiens, Hook. Brit. Jung. t. 50; Jungermannia cam- 
pylodonta , Taylor Bond. Journ. of Bot. 1845, p. 80; Plagiochila 
campylodonta , Gottsche, Lindenberg et Hees Syn. Hep. 039. On 
moist ground, Dianas Peak, Dr. Hooker; creeping amongst Macro- 
mitrurn Seemanni, Dr. Seemann. Probably indigenous to St. Helena. 
Oiiginally discovered in Ireland, and found for many years only 
m a barren state, the place of this curious species was long uncer- 
tain ; but by the fortunate discovery of perianth-bearing specimens 
in the Andes, by Mr. Spruce, its real affinity is found to be with 
the Jungermannia falcata, Hooker Musci Exot. t. 89. A species 
also like A. decipiens, so nearly resembling many Plagiochila;, that 
their mode of fruiting would be so different, could not have been 
suspected. 
Tylimanthus, Mitt, in Hooker’s Handbook of the Flora of 
Hew Zealand, ii. p. 753. 
946. T. anisodon, Tayl. Bond. Journ. of Bot. 1845, p. 79. 
{Plagiochila a?iisodonta).—Dv. Hooker. Probably indigenous to St. 
Helena. 
This species, of which the fructification has not yet been seen, re- 
sembles very nearly P tenella= Ggmnanthe tenella, Hook. fil. et Tayl. 
FI. Tasman, u. t. 170, f. 3, and agrees with it, and some other 
nearly allied species, in the areolation, the cell walls being wide. 
