384 FLORA VITIENSIS. 
+tt Folia tetrasticha. 
V. DREPANOPHYLLUM, Rich. in Hook. Muse. Exot. Folia bifarie compressa, falciformi-curvata, 
plana. 
1. D. semilimbatum, Mitt. Linn. Soc. Journ. vol. x. p. 194. t. 5. E; caules in cæspitem aggregati, 
dichotome divisi, erecti?; folia distiche compressa, nervo rufo in mucronem brevissimum excurrente, 
lamina folii latere superiore (i. e. caulis apicem versus) ambitu semiorbiculari, limbo cartilagineo incrassato 
rufo superne suberenulato integerrimove, fere ad apicem usque continuo marginata, lamina latere inferiore 
multo angustiore immarginata, apiee subcrenata, basin versus angustata et decurrente (ambitu igitur folii 
ovali-oblongo acuto, nervo uno latere propinquiore) ; cellule quadratæ rotundatæque, firme, pellucidæ, læves ; 
folia perichætialia magis oblonga, acutiora, cæterum caulinis similia.—Samoa, Tutuila (Powell! n. 185).— 
Very much smaller than the Equatorial American D. fulvum, Rich.; but, so far as can be judged from the 
specimens without fruit, closely allied and, in all probability, congeneric with it. 
** Flores in ramulo brevissimo basilari. 
VI. RHIZOGONIUM, Brid. vol. ii. p. 664. Caules erecti, subsimplices, rarius ramosi. Folia undique 
æqualia vel compressa, versus apices caulium decrescentia. Theca longe pedunculata, peristomio perfecto. 
* Pyrrhobryum, Mitt. Linn. Soc. Journ. vol. x.—Folia undique inserta, rigida, cellulis densis 
rotundis areolata. Theca plicata. 
1. R. spiniforme, L. ( Hypnum) ; folia angustissime lineari-lanceolata, nervo percurrente, dorso dentato, 
margine duplicato-serrata, perichetialia ovato-subulata simpliciter serrulata ; theca oblonga, opereulo brevi- 
rostro, peristomio interno processibus quam dentes brevioribus in membrana fere ad eorum medium ex- 
serta impositis, ciliis obsoletis.— Samoa, Upolu, on trees (1000-2000 feet) (Powell! n. 90); Sandwich Islands 
(Douglas! n. 60).— Possibly distinet from the widely-distributed P. spiniforme, so common in tropical 
Ameriea. 
2. В. pungens, Sull. Proceed. Amer. Acad. of Arts and Sc. vol. iii. ; dioicum ; cæspite denso hispido e viridi 
spadiceo; caulibus bi-triuncialibus basi fructiferis erectiusculis simplicibus inferne tomento atropurpureo 
dense vestitis; foliis laxiuscule dispositis patenti-divergentibus carinato-concavis semiuncialibus (arista in- 
clusa) strictiuseulis rigidis pungentibus elliptico-lanceolatis, costa valida subtereti in aristam dorso et lateribus 
grosse dentatam lamina quintuplo longiorem excurrente instructis, basi valde incrassatis, e cellulis minutis 
densis subquadratis compositis, margine duplicato-dentato vel potius bilamelloso, lamellis dentatis peri- 
chætiis radicalibus brevissime stipitatis; foliis perichætialibus exterioribus lanceolatis dentatis, interioribus 
oblongis integerrimis, omnibus laxius reticulatis basi vaginantibus costa excurrente valida dentata longis- 
sime aristatis; archegoniis longiusculis numerosis (40-50) copiose paraphysatis, paraphysibus 7-10-septatis 
archegonia paululum superantibus.—Sull. 1. e.—H awaii district of Puna on the south-west coast (Amer. 
Exped.).— This must be considerably larger than any other species yet known. 
3. R. setosum, Mitt. Journ. of the Proceed. Linn. Soc. 1868, p. 174 ; dioicum; folia in ramis sterilibus 
patentia, recta subsecundave, apicalia erecta appressa, a basi sensim subulato-angustata, elongata, setacea, 
rigida, nervo crasso percurrente, superne dorso dentato, margine incrassata, basi integerrima superne bre- 
viter duplieato-dentata, a medio usque ad apicem dentibus validioribus simplicibus serrata, cellulis parvis 
rotundis limitibus latis; perichætium in ramo brevi, foliis a basi parva ovata longe anguste subulata curvata, 
nervo excurrente marginibusque superne dentatis. Habitus R. spiniformis.— Samoa, Upolu, on trees on 
the way to Lanutoo, 2000 ft. (Powell! п. 11). In size, mode of growth, and in the colour of its foliage, like 
Р. spiniforme, but with leaves scarcely half as wide, more bristle-like and rigid; the teeth towards the apex 
of the leaf are evidently a continuation of the margin, so that the nerve is not terete and excurrent as is 
said to be the case in P. pungens, which must also be a much larger Moss. 
++ Photinophyllum, Mitt. Linn. Soc. Journ. vol. x.—Folia undique inserta, cellulis majusculis pellueidis 
areolata. Theca levis. 
4. R. subbasilare, Hook. Muse. Exot. t. 10 (Hypnum) ; caulis erectus; folia patentia oblongo-lanceolata 
planiuscula nervo infra apicem evanido, marginibus superioribus, denticulis simplicibus serratis, cellulis 
oblongis pellucidis parietibus angustissimis, perichætialia ude acuminata; theca in pedunculo elongato 
cylindracea, horizontalis nutansve, operculo conico.—Samoa, Tutuila (Powell). Far different from the 
species of the preceding section in its pellucid, loosely areolate but firm leaves. 
Tribus VIT. SkrroPRYLLEX.— Folia verticalia margine inferiore in caulem descendente integro, 
superiore basi fisso caulem equitante. 
I. FissrpENs, Hedw. Caulis sim 
: 5 plex, abbreviatus үе! elongatus ramosusque. Folia bifariam equitantia, 
carina late alata foliiformi, d 5 4 — 
Flores terminales, laterales vel basilares. Theca levis, erecta vel inclinata ; 
