386 FLORA VITIENSIS. 
elsewhere, those species with erect and smooth capsules approaching very nearly to Cynontodium, Hedw., of, 
as the species belonging to the group so named have been more recently designated, Leptotrichum, Hampe, 
notwithstanding that this last has already been used for a group of Fungi, and that Hedwig’s genus was 
founded on species which may be said to be typical species of Leptotrichwm, but from these species the 
Dicranelie are usually distinguishable by their short, frequently plicate capsule, and shorter not filiform 
peristomial teeth. From the various groups of species comprised in the genus Dicranum, this genus differs 
in the small stature of the species, and in the entire absence of alary cells; the species with curved sete 
siinulate very nearly the smaller species of the genus Campylopus, but differ from this in the same respects 
as they do from Dicranum. 
1. D. flaccidula, Mitt. in Seem. Bonpl. 1861, p. 365 (Leptotrichum) ; dioica, czspitosa ; caulis 
humilis, simplex; folia patentia stricta vel subsecunda a basi sensim angustata sublanceolata apice 
subacuta integerrima mollia subnitida, nervo viridi percurrente ubique a foli lamina distincto, 
cellulis elongatis angustis mollibus, pericheetialia paulo majora subeonformia ; theca in pedunculo 
gracili erecto aurantiaco elliptico-ovalis, ore parvo operculo subulato recto, annulo lato ; peristomium 
dentibus brevibus solidis—Viti (Seemann!), Also in Tutuila, Samoan Islands, on muddy banks 
(Powell! n. 15). 
A small species with thin soft foliage, more nearly allied to the tropical African D, nitidula, Mitt. 
Trang. Linn. Soe. vol. xxiii. t. 5. f. 1, than to any other. 
Tab. 98a. Fig. 1, plants of the natural size; 2, a leaf from the stem; 8, a perichetial leaf; 4, the 
capsule and its operculum; 5, a portion of the peristome, all magnified. 
1. D.trichophylla, Mitt. in Seem. Bonpl. 1861, p. 566 (Leptotrichum) ; dioica; cauhs simplex 
yel furcatus, plus minus elongatus; folia basi erecta quadrata vaginantia, cellulis inferioribus elon- 
gatis pellucidis areolata, nervo in subulam angustam trichoideam flexuosam integerrimam excurrente, 
basin versus angnste lamina folii marginata, perichztialia ad basin partis subulatee paululo latiora ; 
theca in pedunculo humido cygneo-curvato pendula, sicea spiraliter flexo suberecta, ovali-elliptica, 
ineequali plicata, basi callosa, infra os parvum subobliquum contracta, operculo subulato obliqua, 
annulo lato, peristomio dentibus angustis dicranis.— Viti (Seemann! 862 part), Ovalau (Milne! in 
Herb. Hooker, 356 a). 
_ _ Stems 3 to 13 im. high, Leaves dull brownish-green, little altered when dry. Allied in the form of 
its leaves to D. proscripta, Hsch., but very different in appearance and in its capsule: from D. euphoroclada 
and D. nana, C, Mueller, from Java, it differs in the more exactly quadrate dilated base of its leaves. 
Tab. 984. Fig. 1, plant of the natural size; 2, a leaf showing at the side the areolation and a cross- 
section; 8, a capsule, with operculum and calyptra; 4, a portion of the peristome, all magnified. 
Trisus Il. LEUCOBRYEA.—Folia albida, e nervo maxime dilatato formata. Peristomii dentes 
integri vel dicrani. 
Tb Octoblepharum, Hedw. Muse. Frond. vol, iii, p. 15; caulis erectus, apice fertilis. Folia 
undique qualia vel tristicha, nervo spe incrassato planiusculo, perichetialia parum diversiformia. 
Theca plus minus lenge pedunculata, erecta, levis, Peristomium dentibus 16 vel 8. Calyptra encul- 
lata, Leucophanes, Brid. vol. i. p. 763. 
The following species have not yet been found in Viti:-—1. O. dentatum, Mitt. Linn. Soe. Journ. 1868, 
p. 175.—Samoan Islands, Upolu, near the crater called Taftia-a-Upolu, 1000 ft. (Powell! n, 19); taller and 
par more reeurved leaves than O. Schimperi (Arthrocormus), Dozy et Molk, Muse. Archip, Ind. t. 27. 
‘4 98 ¢, Fig. 1, plant of the natural size; 2,a leaf with three cross-sections at different parts of its length, 
‘ a point and a portion near the base more enlarged, all magnified. 2. O, albidum, Linn. Sp. Plant. 1383 
ages ae hee (Lay et Collie!). 8. O. inerassatum (sp. noy,), Mitt. mes. ; exspitosam ; caulis 
athe 5 oe ie asl mare oblonga, erecta, € cellulis oblongis areolata et limbo anguste marginata, 
ate 3) as pene oe pies apice obtusiuseulo oblique acuto serrulato producta, nervo in parte 
aiee oe pa atitudinis in subula trigona totam occupante ; medio e stratis cellularum superimpositarum 
o.—Samoan Islands, Tutuila (Powell!) ; closely resembling O.dentatum, but with leaves more straight 

