676 Britton: West Indian mosses 



According to Dr. Andrews' notes "the Swartz specimens, which 

 are deposited in the collections of the Naturhistoriska Riks- 

 museum at Stockholm, are distributed through the herbarium of 

 non-Scandinavian mosses, which are, in general, arranged after 

 Paris's Index. Packets are generally uniform, one to many on 

 the herbarium sheet. Swartz' specimens are recognizable by labels 

 in his handwriting included in the packet, by the kind of paper 

 with water-mark to which he pasted them and references of others 

 to the origin of specimens." 



We have seen specimens of all but two of these species, and 

 have duplicates of many of them; it is therefore our intention to 

 distribute sets of these and other West Indian mosses, in exchange 

 for other exsiccatae and duplicates from the West Indies, Central 

 America, and South America. 



New York Botanical Garden 



Explanation of plate 25 



Clastobryum trichophyllum (Sw.) E. G. Britton 

 The figures were drawn from magnifications three times as great as expressed in 



the numbers, which represent the magnifications of the figures as they stand in the 



reproduction. 



i. Plant, natural size. 



2. Portion of branch showing the flagellate branches and gemmae, X 2%. 



3. Outline of stem leaf, X 16%. 



4. 5. Outlines of branch leaves, X 16%. 



6. Apex of leaf, X 108. 



7. Basal portion of leaf, showing the auricle, X 108. 



8. Median cells, X 263. 



9. Apex of leaf showing the pores in the walls of the apical cells, X 263. 



10. Cross section of leaf, X 140. 



11. Branch with gemmae, X 85. 



12. Gemma, X 138. 



13. Cross section of stem, X 140. 



14. Perichaetial bud, leaves of one side removed to show the paraphyses and 

 archegonia, X 12. 



15. Capsule, X 10. 



16. Calyptra, X 10. 



17. Stoma from base of capsule, X 195. 



18. Portion of peristome and upper part of capsule, X 195- 



19. Spores, X 195- 



