FLORA VITIENSIS. 399 
inde subulata apice recurva; theca in pedunculo elongato stramineo cylindracea, peristomio interno pro- 
cessibus rubris dentium externe equilongis.—New Ireland (Labillardiére), Tahiti (Menzies), Lord Howe's 
Island (Milne! M‘Gillivray !), Isle of Pines (Milne!), St. Paul's Island (Strange !), Aneitum (Milne !).— 
Less compressed than the Indian and Javan Æ. plicatus, C. Miller, with wider leaves. Il. CTENID1UM, 
Sebimp. 1. C. stellulatum (sp. nov.), Mitt. ; caulis ramulis brevibus pinnatus ; folia patenti-divergentia, 
a basi subcordato-ovata, sensim longe subulato-attenuata, obsoletinervia, margine ubique serrulata, cellulis 
angustis areolata, ramea compressa lanceolato-subulata argutius serrulata.— Society Islands (Bidwill !)— 
Stems one to two inches long. Foliage greenish-yellow, glossy, arranged at the Ry of the stems in a 
stellate manner. III. STEREODON, Brid.: 1, 8. Draytoni, Sull. Proceed. Amer. Acad. of Arts and Se. 1854, 
from Hawaii, forest at the eastern base of Manua Kea (American Expedition !); 2, 8. Eudoræ, Sull. 
Proceed. Amer. Acad. of Arts and Se. 1854, from Oahu and Hawaii (American Expedition!) ; 8, S. decur- 
rens, Sull. Proceed. Amer. Acad. of Arts and Sc. 1854, from Sandwich Islands, Oahu, and Hawaii Mountains 
(American Expedition). IV. Ртүсномхтох, Hook. f. et Wils. 1. P. aciculare, Brid. Muse. Ree. vol. ii. 
p. 2, 158. t. 5. f. 2 (Hypnum), from Samoa, Manua, on trees (Powell! n. 108), Norfolk Island (Cunning- 
nam !).—Abundant in New Zealand and Tasmania, also in Australia and the western coast of South America. 
ХХ. Leucomium, Mitt. Linn. Soc. Journ. vol. x. Caulis procumbens, subsimplex vel pinnatus. 
Folia compressa, æqualia, enervia, laxissime areolata. Theca parva, horizontalis pendulave, operculo 
longirostri ; peristomii externi dentes lamina exteriore integra vel divisa, interni ciliis plus minus 
perfectis nullisve. 
A small genus, consisting chiefly of tropical American species ; all have their leaves very laxly areolate, 
and the stems attached to decaying wood or to rotten leaves. 
1. L. debile, Sull. Amer. Expl. Exped. p. 23. t. 21 (Hookeria) ; monoicum et synoicum ; caulis 
ramis paucis irregularibus ramosus; folia compressa lateralia patentia, omnia ovato-lanceolata 
subulato-attenuata integerrima enervia, cellulis amplis pellucidis areolata, perichetialia parva erecta 
vel erecto-patentia ovata acuminata; theca in pedunculo gracillimo rubro ovalis, horizontalis, eollo 
sensim attenuato, operculo subulirostrato ; peristomium internum ciliis carentibus.— Gau, on decayed 
trees (Milne ! n. 22), Samoan Islands, Tutuila (Powell! n. 24). 
Pale green, and when older pale whitish-brown and glossy; the leaves are not much altered in direc- 
tion when dry. 
XXI. Isopterygium, Mitt. Linn. Soc. Journ. 1868. Caulis procumbens, ramis inæquilongis 
fasciculatim ramosis. Folia compressa, disticha, seriebus tribus superioribus (centrali interme- 
diisque) vix obviis, seriebus tribus inferioribus deficientibus, brevissime binervia, cellulis angustis 
levibus. Theca inclinata horizontalisve, oblonga, ciliis peristomii interni coalitis. : 
- Å group of mostly very small Mosses, with compressed, almost distichous leaves. 
1. I. molliculum, Sull. Amer. Expl. Exped. t. 11 (Hypnum); monoicum; caulis decumbens, 
parce ramosus; folia compressa distichacea ovato-lanceolata acuminata integerrima enervia, cellulis 
angustis elongatis, perichætialia longius acuminata; theca in pedunculo elongato ovalis, subhorizon- 
talis, operculo acuminato.—Viti (Milne !). Also in Lord Howe's Island, on rotten wood (Milne 
and M'Gillivray !), and Raoul Island, Kermandec Islands (M‘Gillivray |). 
Å minute species, softer than the tropical American I. tenerum, Sw. (Hypnum). 
XXII. Ectropothecium, Mitt. Linn. Soc. Journ. vol. v. p. 10. Caulis procumbens, ramis brevi- 
bus æqualibus dense pinnatus. Folia compressa, diversiformia, breviter binervia, cellulis angustis 
latisve areolata. Fructus e caule oriundus. Theca in pedunculo elongato, brevis, horizontalis vel 
pendula, urceolata, operculo brevirostri, peristomii interni ciliis coalitis. 
A genus of numerous species, all of which are elegantly branched and prostrate. The foliage is most 
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