—66— 



Growing on tree trunks, El Valle to San Juan, Trinidad, Brit. West Indies, 

 J. R. Johnston, July 6, 1903, number 163 {Type). 



Collected also with old fruit, lacking lid and calyptra, near Kaieteur Falls 

 by Miss Noel in 1914, number 8g. 



This species is especially distinguished by the long, slender-pointed leaves, 

 elongate cells papillose nearly throughout and by the small capsule, subglobose 

 when dry. 



Philonotis gracillima Aongstr. 83. 



Squamidium leucotrichum (Tayl.) Broth. 81. 

 ■ Pilot? ichum hiptnnaium (Schwaegr.) Brid. 100. 



Hookeriopsis Parkeriana (Hook.) Jaeg. 88. 



Miltenothamnium volvatum (Hpe.) Card. pj. 



Taxithelium planum (Brid.) Mitt. p5 a. 



Sematophyllum suhsimplex (Hedw.) Mitt. g6 a. 



From Dominica 



Dicranella brachyblepharis (C. M.) Mitt. Boiling Lake, y, 32 Si 37. 

 Dicranella c?assinervis (Hpe.) ]a.eg. Boihng Lake. 46. 

 Leucoloma serrulatum Brid. On trees, Dominica. 5(5. 

 Thysanomitrium Richardi Brid. Boiling Lake. 28. 

 Ocioblepharum albidum (L.) Hedw. Roseau. 14. 

 Fissidens polypodioides (Sw.) Hedw, Boiling Lake. 57. 

 Syrrhopodon flavescens C. M. Boiling Lake. 43. 

 Syrrhopodon rigtdus Hook. & Grev. Boiling Lake. 52. 

 Barbula hymenosiegioides Broth. Damp rocks, Roseau. 12. 

 Rhizogonium spiniforme (L.) Bruch. Boiling Lake. 24. 

 Philonotis sphaericarpa (Sw.) Brid. Roseau. 5. 

 Philonotis uncinata gracilenta (Hpe.) Dism. Dominica. 3. 

 Phyllogonium fulgens (Sw.) Brid. Boiling Lake. 25. 

 Porolrichum insularum Mitt. A single stem only. 23. 

 Ptlotrichum Husnoti Schimp. Dominica. 60. 

 Lepidopilum polytrichoides (Hedw.) Brid. Roseau. 16. 

 Thuidium antillarum Besch. Boiling Lake. 55". 

 Sematophyllum pungens (Sw.) Mitt. Boiling Lake. 47. 

 New York Botanical Garden 



Explanation of Plate IV 

 Macromitrium trinitense Williams, sp. nov. 



Fig. I. Plant about natural size. 



2. Moistened capsule with lid, X 16. 



3. Calyptra, x 16. 



4. Old dry capsule, x 16. 



5. Apex of stem leaf, x 180. 



6. Median cells of leaves, X 250. 



7. Median cells as often found in young leaves, X 250. 



8. Cross-section near middle of leaf, x 180. 



9. Inner perichaetial leaf, x 16. 



10. Apex of perichaetial leaf, x 60. 



11. Upper stem leaf, X 16. 



12. Lower stem leaf , X 16. 



