FLORA VITIENSIs. 419 
Orvo CX. MARCHANTIEA, 
(Avcrore W, Mirren.) 
The following are non-Vitian genera, viz. :-— 
I. Dumortrera, Reinw. Blume et Nees; Gottsche, Lindenb. et Nees Syn. Hepat. p. 542. 
1. D. trichocephala, Nees ; Hook. Teon, pl. 2. t. 159.—Sandwich islands (Douglas, n. 71, Hillebr: 
n. 4), Samoa (Powell, n. 150), P (Douglas, n. 71, Hille rand, 
Tl. Dexvroceros, Nees ab E.; Gottsche, Lindenb. et Nees Syn. Hepat, p. 570. 
1. D. granulatus (sp. nov.), Mitt. ; frons subpinnatim ramosa, costa crassa opaca, limbo marginali 
lato margine dentato valde flexuoso erispatoque e cellulis subpellucidis areolato; involucram elongatum, 
tuberculosum ; capsula elongata, asperula.— Samoa (Powell, n, 144).—Frondes unciam longi, sesquilineam 
lati, rubiginosi.—In this species the thin border of the frond is so much sinuated and crisped that the nerve 
appears as if beset with lobe-like leaves, 2. D. tumidulus (sp. nov.), Mitt.; frons fureatim ramosa, costa 
erassiore obscuriore e cellulis elongatis laxis areolata, limbo plicato tumido sinuato margine subdentato 
cellnlis granuloso-obseuris rotundis areolato; involucrum elongatum, leve, capsula punctulata—Samoa 
ad museos repens (Powell).—Frondes lineam late, virides ; involucra bilinearia ; capsula equilonga.—This 
has the lamina bordering the fronds very little sinuated and the central costa far more soft and insensibly 
passing into the margin. 
III, Anrnocrros, Micheli; Gottsche, Lindenb. et Nees Syn. Hepat. p. 582, 
1, A. flagellarts (sp. nov.), Mitt. ; frons sinuata, lobata, planiuscula, ecostata, levis, margine ramis ascen- 
dentibus elongatis angustis furcatis compressis obscurius areolatis ramosa ; involucrum leve, capsula elon- 
gata exserta, valvis divisis flexuosis—Samoa, on decayed bark (Powell).—A, /evi Europe similis, sed pro- 
longationibus 4-6 lineas longis singularis—The curious branches which arise from the edges of the fronds 
inuch resemble in appearance some forms of Pellia. Two very different-looking specimens of species of 
Plagiochasma have been received from the Pacific, but too incomplete to afford any safe distinctive 
characters. 
I, Marchantia, Linn. Receptaculum foemineum masculumque ex apice frondis produectum, 
margine radiatum. Involucra foeeminea radiis alterna, Perianthia 4—5-fida. Gemme in scyphis e 
dorso frondis enatis imposite. 
1. M. nitida, Lehm. et Lindenb.; Gottsche, Lindenb. et Nees Syn, Hepat. p. 532 3 frondes 
elongate, planiusculre, leeves, poris parvis notate, subtus purpureze, squamis parvis nervo contiguis 5 Te- 
ceptaculum feemiueum in pedunculo ramentoso hemisphencum, subintegrum, margine brevissime 
lobatum, subtus ramentis dense obsitum ; receptaculum maseulum lobatum.—Viti Levu (Greeffe), 
Samoa, Manna (1400 ft.), (Powell, n. 147), Tahiti (Collie), Hawaii (Macrae), Sandwich Islands 
{Hillebrand). 
this Marchantia are none of them sufficient for an exact determination, but they 
ee en he species found in New Zealand as well as in India. 
appear to be the same as t 
Orpo OXI, LICHENES. 
(Averorr J. M. Cromstz.) 
iti, i i ich i i ret afford a fair 
that Viti, if not particularly rich in Lichens, must ye 
ee Pe a ee ; a Tit is, however, é be regretted that the few botanical collectors who 
proportion of 3 ot e . in other similar regions, paid so little attention to this interesting class of 
SAYS EAC ete 7 ‘the larger corticole species, chiefly Stictas, alone appear in herbaria, while terricole 
cry plckanii er . br. Nylander’s Synopsis of the Lichens of the neighbonring 
i olected. a) J 1 ( 
and saxieole species are entirely neg o 220 species (exclusive of varieties), will serve to give some idea of 
nee aba Sete: also in Viti, and to show that a rich harvest awaits the researches of 
ich ma 
bddiet nell ectare throughout the extensive Polynesian group. 
