274 MR. W. WEST OX SOME ERESHWATEE 



vel interdum stratis parallelis formatis, in ambitu ssepe sub- 

 rugosis, apice angustioribus et saepe ramosis. 



Diam. tricli. (s. vag.) l*9-2'3/x; crass, tricb. c. vag. 13'5-25^t. 



Hah. On trees, summit of Trois Pitons (4500 ft.), Dominica. 

 Nos. 903 and 904. 



Yar. LUTEOFXiscA, nov. var. 



Yar. ferruginea, strato denso, 1-2 mm. alto, fasciculis brevior- 

 ibus, 4-6 mm. (interdum 10 ram.) altis, articulis crassioribus. 



Crass, trich. 2"5-3'5 fx ; crass, vag. 15-40 fx. 



This variety also often has two, three, or more threads in one 

 sheath. 



Hah. On rocks, Eoseau Yalley (1000-2000 ft.), Dominica. 

 (27-6-92.) No. 24. On bark, windward road to lake (1000- 

 2000 ft.), Dominica. (25-8-92.) Nos. 5 13 and 511 .Also on the 

 ground, mostly in old Diablotia holes, Morne Anglais (2300 ft.). 

 (15-7-92.) JN'o. 493. Thicker and coarser sheath. 



The specimens preserved in liquid strongly reminded one 

 of Sphac/num euspidatum ; they occurred amongst mosses in 

 penicillate tufts which were subaerugioose towards the apices, 

 the sheaths, but not the trichomes, here becoming narrower. 

 Many of the sheaths in the stratum were without trichomes ; 

 and in consequence of this, and the broader sheaths at the base, 

 the stratum was paler than the erect fasciculi. 



32. Ltngbyapenicillata, Kuetz. {Botan. Zeit. 1847, p. 194.) 

 [Leibleinia penicillata, Kuetz. Species Algar. ; Tahulce phycolog. i. 

 p. 46, t. 81. f. ii.] 



Crass, fil. 3-3'5/u. 



Hah. On bed of stream in crater of Grande Soufriere, Dominica. 

 No. 881. 



33. L. SUBTILE, West. {Alg. of the Eng.Lake Distr. inJourn. 

 Boy. Micr. Soc. Dec. 1S92, p. 741, pi. x. f. 58.) 



Crass, fil. 1'4 /t. 



Hah. AVith the preceding. 



34. PnoRMiDiUM LTXGBYACEUM, Kuetz. {Pliijcol. gener. 

 p. 194; Tahulce phycolog. p. 33, t. 46. f. iii. ; Bahh. Fl. Europ. 

 Jig. ii. p. 124.) 



Crass, fil. 3'5-4^t. 



Hah. On damp wall of dam. Sharp's Eiver, St. A'incent. 

 No. 477. On old wall, Dominica. (1-8-92.) No. 473. 



The cells were about as long as broad (sometimes a little longer). 



