412 FLORA VITIENSIS. 
cumbentes ascendentesve, dichotome rarius subpinnatim ramosi. Folia lobulo inflexo uni-bi-tri- 
dentato, Amphigastria integra, rarissime bifida, Fructus terminalis demum ob innoyationes in 
dichotomia. Perianthium leve vel plicatum. 
The following are non-Vitian species, viz.:—1l. P. spathulistipa, Nees ab E. Hep. Javan. p. 38 (Junger- 
mannia).—Thysananthus spathulistipus, Lindenb. ; Gottsche, Lindenb. et Nees Syn. Hepat. p. 287.—Samoa 
(Powell, n. 167), Upolu (Gratfe). 2. P. ligulata, Lehm. et Lindenb. in Lehm. Pugil. vi. p. 89 (Junger- 
mannia).—P. ligulata, Gottsche, Lindenb. et Nees Syn. Hepat. p. 301.—Tahiti (Beechey), Samoa (Powell), 
3, P. cuncistipula (sp. nov.), Mitt.; rami breves, parce furcatim divisi; folia patentia, orbiculato-ovata, sub- 
acuta, margine yentrali incurva, lobulo parvo quadrato unidentato, amphigastria obovata, subcuneata, apice 
subsinuata ; folia involucralia conformia, amphigastrium retusum ; periauthium triplicatum.—Isle of Pines 
(Milne, Strange), Pacific Islands (Beechey).—Rami 4 lineas longi, cum foliis 3 lineam lati. Folia fuseo- 
olivacea. 4. P. tumida, Nees et Mont.; Gottsche, Lindenb. et Nees Syn. Hep. p. 800 (Phragmicoma).— 
Samoa (Powell), 5. P. olivacea, Tayl. Lond. Journ. Bot. 1844, p.568.—Samoa (Poweil), Raiatea (Sibbald). 
6. P. securifolia, Endl. Prodr. Fl. Ins. Norfolk; Gottsehe, Lindenb. et Nees Syn. Hepat. p. 300.—Nortolk 
Island (Nndlicher). 7. P. aulacophora, Mont. Ann. des Se, Nat. Bot. tom. xix. p. 259; Voy. au Pole Sud, 
t. 19. f. 1; rami procumbentes, inordinate dichotomi; folia imbricata, sensim perianthium versus majora, 
suborbiculata, margine ventrali medio sinuata, lobulo oblongo, apice bidentato; amphigastria orbiculata ; 
folia involueralia concava, apice emarginata, lobis subsequalibus inferiore acuto; amphigastrium magnum, 
integerrimum ; perianthium oblongum, breve, immersum, demum capsula matura exserta emergens, pluries 
plicatum.—Samoa (Powell), Manga Reva, ad radices arborum (Hombron). 8. P. ¢mmersa (sp. noy.), Mitt. ; 
caulis brevis, ramosus; folia divergentia, oblongo-orbiculata, margine ventrali lobulo rotundato involuto ; 
amphigastria orbiculata; folia involucralia subrotunda, majora, margine dorsali apiceque deutata, lobulo 
parvo dentiformi; amphigastrium magnum, integerrimum, orbiculatum ; perianthium inclusum, obovatum, 
dorso planum, ventre bicarinatum, angulis denticulis spinulosis curvulis in serie duplici dispositis ciliatis. 
Samoa (Powell !)—Caulis 3-4 lineas longus, cum foliis 2 lineam latus. Folia castaneo-fusea. 9. P. tecta 
(sp. nov.), Mitt.; caulis procumbens, ramosus; folia divergentia, ovali-rotunda, lobulo ovato inflexo ; 
amphigastria parva, orbiculata; folia involucralia magna, lobulo oblongo angulo recto terminato; perian- 
thium rotundato-obovatum, margine late alatum, ala apice dentata, dorso planum, ventre carinis duabus 
superne dentatis.—Raoul Island, Kermandec Islands (M‘Gillivray).—Caulis semiunciam longus, cum foliis 
semilineam latus. Folia olivacea, involucralia perianthium tegentia. 10, P. swbnuda (sp. noy.); caulis 
elongatus, prostratus, ramis remotis, subpinnatus; folia divergentia, ovato-rotunda, obtusa, integerrima, 
lobulo ovato involuto; amphigastria orbiculata; folia involucralia ovalia, subdentata, lobulo oblongo plano, 
apice rectangulo; perianthium obovatum, emergens, dorso planum, leve vel plica parva, ventre bicarmatum 
plicis, ala angusta inconspicua remote breviterque dentata.—Sandwich Islands (Hillebrand).—Caulis sesqui- 
unciam longus, cum foltis lineam latus. Folia nigro-fusea. 11. P. contractilis (sp. nov.), Mitt.; eaulis 
repens, pinnatus, ramis fertilibus ascendentibus; folia divaricata, ovali-oblonga, obtusa, margine dorsali 
apiceque denticulata, ventrali integerrima, lobulo parvo oblongo inflexo unidentato ; amphigastria rotundo- 
vbcordata, apice denticulata; folia involucralia ovata, acuta, margine dorsali dentata, lobulo angusto incon- 
spicuo; amphigastrium rotundo-ovale, apice denticulatum, dentibus duobus mediis majoribus; perianthium 
obovatum, compressum, dorso planum, ventre apicem versus plica parva humile carinatum, margine superne 
denticulatum.—Samoa, ad arborum corticem (Powell!).—Caules repentes, unciam longi, ramis ascenden- 
tibus 2—8-linearis, cum foliis lineam lati. Folia olivacea, siccitate contracta, e cellulis subovalibus mollibus 
areolata. 

1, P. plana, Van der Sande Lacoste, Hep. Javan. t. 10 (Thysananthus) ; rami graciles, elon- 
gati, rigiduli, dichotomi vel subpinnati; folia parva, patentia, ovali-oblonga, apice obtusa, acuta 
apiculatave, integerrima, margine yentrali curvata, interdum flexuosa, lobulo parvo oblongo, apice 
apiculo hamato ad folii marginem curvato, cellulis in folii medio majoribus ovalibus, vittam forman- 
tibus reliquis rotundatis; amphigastria rotundato-obovata, apice crenata subintegerrimave, basi 
medio impressa; folia involucralia erecta, elongata, apice denticulata; amphigastrium oblongum, 
apice sinu rectangulo bidentatum, subdenticulatum > perianthium oblongum, angulis superne 
denticulatis—-Viti (Seemann !), Samoa (Powell), Sunday Island (Milne). 
Rami 2 uneias longi, cum foliis vix semilineam lati. Folia pallide olivaceo-viridia, rigidula, sicca 
eran inyolucralia ad perianthii apicem attingentia.—Specimens all rather more elongated than in Javan 
examples, 
*, P, bilabiata (sp. nov.), Mitt.; caulis breviusculus, dichotome divisus; folia patenti-diver- 
