186 mh. w. mitten's list or samoan mosses. 



oblongq-l^nceolata, omnia nervis dorso superne serratis percurren- 

 tibus, marginibus anguste recurvis serrulatis, cellulis pellucidis, supe- 

 rioribus oblongis, inferioribus snbquadratis ; perichaitialia longiora, a 

 basilatiora, subulata, serrulata; tbeca in pedunculo elongate, subglo- 

 bosa, insequalis, horizoutalis, plicata, operculo depresse conico ; pen- 

 stomium depressum, internum externumque dentlbus fere laevibus ; 

 flos masculus parvus, foliis a basi rotundata subulatis erectis, 

 Hab. Tutuila, on damp earth and on rocks by water-courses (20-100 ft.). 



No. 28. 



Stems from a quarter to balf an incli liigb. Leaves pale green, 

 small and sbort, very rougb from the serratures of the margins 

 and nerve. Seta balf an incli long. 



Near to the South- American P. tenella^ C. Miiller, 



Thuidium erosulum, sp. n. Monoieum ; cauHs repens, intricatus, 

 bipinnatim ramosus; folia patentia, triangularia, subulato -acuminata, 

 nervo sub apice evanido, marginibus reflexis subintegerrimis, cellulis 

 obscuris, papillis brevissimis ; folia ramea ovata acuta ramulinaque 

 ovata obtusiuscula compressa, nervo pallido dorso scabro carinata, 

 marginibus crenulatis, cellulis papillosis obscuris areolata; perichsetialia 

 ovata, superne denticulata, exinde longe subulata, anguste attenuata, 

 subintegerrima, nervis percurrentibus ; pedunculus elongatus, scaber; 

 theca oblonga, subhorizontalis, operculo subulato ; peristomium inter- 

 num ciliis in unum coalitis. 



Hab, Tutuila, on stones, rocks, and roots of trees in shady places 

 (10-50 ft.). No. 29. Wakoya, Figi Islands, Milne. 



This small species resembles very closely in its size and habit, 

 as well as in the colour of its foliage, JPeleJcium veJattim ; but its 

 fruit and caljptra are as usual in the smaller forms of Thuidium. 



T. Samoanum, sp. n. Caules procumbenteSj erecti arcuatique, penua;- 

 formiter bipinnati ; folia caulina appressa, a basi sub triangulari- ovata 

 sensim in acumen ligulatum obtusiusculum producta, laevia, nervo 

 infra apicem evanido, margine crenulato, cellulis rotnndis, papilHs fere 

 obsoletis ; perichsetialia interna, a basi lata sensim angustata et in 

 acumen elongatum loriforme flexosum obtusum crenulatum pro- 

 ducta, marginibus inferne ciliis pluribus elongatis angustis ciliata; 

 theca in pedunculo elongato, cyhndracea, arcuata, horizontalis. 



Hob. Tutuila and Manua, on large stones in gullies (100-2000 ft.)- 

 No. 105. Guadalcanar, Solomon Islands, Milne, Figi Islands, See- 

 mann. 



Very distinct from the many allied species in the ligulate 

 apices of its canline leaves and in the smoothness of those of the 

 ramuli. 



T. RAMENTOSUM, Mitten in Bonplandia^ 1861 (Leskea). 

 Hab. Manua, in beds of gullie4 (1400-1500 ft.). No. 124. 



