192 MB. w. mitten's list or samoan mosses.- 



L, RUGOSUM, sp. n. Folia dense inserta, pentasticha, a basi erectiore 

 excavata, lanceolata, sensim longe angustata, marginibus incurvis 

 canaliculata, acuta, patentia, dorso parietibus cellularum prominenti- 

 bus subdentata, cellulis basi in parte erectiore ad margines in seriebus 

 cireiter 9-10 dispositis (folil lamina), in parte superiore obsoletis. 



Hab. Manua, on trees. No. 101. 



Like L. sanctum in size and habit, but a little more rigid, and 



with its leaves tinged with a pale yellowish green. From L. 

 pentasticTivm, Dozy et Molk. Bryol. Javan. t. 15, it differs in its 

 leaves being narrowed above and below, with a more evident 

 border of the lamina. 



Leucoloma tenuifoltum, sp. n. Folia sensim a basi elliptico-lan- 

 ceolata longe angustata, attenuata, nervo pallido usque ad apicem mi- 

 nute denticulatum a folii lamina distincto, cellulis in folii medio mi- 

 nutissimis rotundatis obscuris, dorso minute papillosis, latitudinis folu 

 I oceupantibus, cellulis ad folii margines elongatis angustis, limbo 

 hyalino usque ad folii longitudinis medium producto, ca^terum L. 

 molli simile. 



Hab. Tutuila and Upolu, on trees. No. 98. 



This species appears to have longer leaves than L, molle, C 

 Miiller, Bryol. Javan. t. 53 (Dicranum), and the cells next the 

 nerve in the middle of the leaf about half as large as in that 

 species, and less evidently papillose on the back. 



Calomnion denticulatum, sp. n. Folia lateralia, omnia super- 

 fieiebus superioribus ad idem latus spectantia, patentia, oblonga, 

 nervo in mucronem excurrcntc, marginibus a medio ad apicem usque 

 denticulatis ; folia media appressa, dimidio breviora, suborbiculata, su- 

 perne dentata; folia omnia cellulis parvis rotundatis interstitiisque 

 pellucidis; pericha^tialia longiora, spathulata lineari-lanceolataque; 

 theca in pedunculo gracili, ovalis, erecta, operculo subulate. Planta 

 mascula flora apicali geramiformi, 



Hab, Upolu, on trees. No. 103. 



Corresponding in size, habit, and appearance with C, lo'tum, 

 Hook. f. et AVils. Fl. New Zealand, pi. 87. f. 5, but with denticu- 

 late leaves, and the capsule appears to have a smaller mouth. 

 Both species of this curious genus are remarkable for their ele- 

 gant form and the firmness of their foliage. 



Hypnodendron Samoanum, sp. n. Folia compressa, quinqueseriata, 

 seriebus duabus inferioribus majoribus, superioribus tribus minoribus, 

 omnia ovato-lanceolata, acuta, planiuscula, nervo superne dorso denti- 

 culato percurrente, marginibus denticulis brevibus duplicatis serratis, 

 cellulis elongatis finibus dorso prominulis punctulato-papillatis. 



Hab, Tutuila, on trees and rocks in the beds of gullies (100-2000 ft.j- 



No. 107. 



