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. 13: 874. f. 640. 1907) but the leaf cells are 
porose and the walls are thickened as shown on the same page in 
f. 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. Musc. 269. 1801. 
Hypnum microphyllum Sw. Fl. Ind. Occ. 3: 1821. 1806. 
Hypnum calyptraium 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. Musc. #/. 69 (from Swartz’ type); 
Sull. 1. c. pl. roo. 
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. Musc. 233. 1801. 
Leskea caespitosa Sw. Fl. Ind. Occ. 3: 1807. 1806. 
Rhaphidostegium 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. 
