Britton: West Indian mosses 671 



has placed it; the presence of septate gemmae, and the ecostate 

 leaves and more or less imperfect endostome, show its relationship 

 to Clastobryum indicum Dozy & Molk. as figured by Brotherus 

 (E. & P. Nat. Pfl. i 3 : 874. /. 640. 1907) but the leaf cells are 

 porose and the walls are thickened as shown on the same page in 

 /. 639 of C. planulum Mitt. 



Clastobryum americanum Cardot, originally described from 

 Mexico, also occurs on the slopes and summit of Sir John Peak 

 above Cinchona, in the Blue Mountains of Jamaica, and Mr. R. 

 S. Williams has collected it in Bolivia at 8,000 ft. near Cargadera 

 in 1902. 



35. Thuidium microphyllum (Sw.) Jaeg. Adumb. 2: 251. 



1876-77 



Hypnum microphyllum Sw. Prod. 142. 1788. 

 Hypnum microphyllum Hedw. Sp. Muse. 269. 1801. 

 Hypnum microphyllum Sw. Fl. Ind. Occ. 3: 1821. 1806. 

 Hypnum calyptratum Sull. Pac. R. R. Rep. 4: 190. 1856. 



Habitat and type locality: "On roots of trees, Jamaica." 



Distribution: Canada to Florida and the Bahamas, Jamaica, 

 Cuba, and Mexico. 



Illustrations: Hedw. Sp. Muse. pi. 69 (from Swartz' type): 

 Sull. 1. c. pi. 100. 



Exsiccatae: Sull. Musci Cub. Wright. 99. 



36. Sematophyllum caespitosum (Sw.) Mitt. Jour. Linn. Soc. 



12: 479. 1869 



Hypnum caespitosum Sw. Prod. 142. 1788. 

 Leskea caespitosa Hedw. Sp. Muse. 233. 1801. 

 Leskea caespitosa Sw. Fl. Ind. Occ. 3: 1807. 1806. 

 Rhaphidoslegium caespitosum Jaeg. Adumb. 2: 454. 1875-76. 

 Hypnum loxense* Sull. Proc. Am. Acad. Arts & Sci. 5: 287. 1861. 



Not Hooker, 1822. 



Habitat and type locality: "On roots of trees, mountains of 

 Hispaniola." 



Distribution: Cuba, Jamaica, Haiti, Porto Rico, Guadeloupe, 



* The real Sematophyllum loxense (Hook.) Jaeg. has been found in Cuba. 



