— 1?— 



14. Leaves decurrent, border bistratose, . . pallenS. 



Leaves not decurrent, border of one layer only, 15. 



15. Leaves narrowly bordered; capsule short pyriforin. 



constricted below the lid, . . iurbinatum. 



Leaves broadly bordered ; capsule long obconic, not 



constricted pseiidotriquetrum . 



16. Leaves with shortish points; costa scarcely or shortly 



excurrent, . . . .17- 



Leaves with costa excurrent into a long point, . 18. 



17. Endostome adhering to peristome, ciVialacking. purpurascens. 



Endostome free, with 2-4 append iculate cilia, . 14. 



18. Subalpine; autoicous; peristome teeth simply articulate; 



cilia 3, appendiculate, .... pallescens . 

 Plants of lower elevations; synoicous, rarely subautoi- 



cous ; teeth as described under 9 ; cilia lacking, pendulum. 



19. Costa plainly vanishing below apex, . . .20. 



Costa excurrent or percurrent, . . . 22. 



20. Branches julaceous, plants silvery and shining when dry, 



common in paths and waste soil, argenteuiii . 



Branches not julaceous, leaves green, larger at summit 



of stem, forming tufts or rosettes. . . . 21. 



21. Plants from underground stolons, lower leaves minute 



and scale-like, upper leaves large, 10-12x3-4"™., 

 forming a strongly marked rosette; habit and ap- 

 pearance of a Mnium; not rare, . proliferum. 

 Plants not from stolons; difference between upper and 

 lower leaves less marked, upper 3x1.5 mm- A rare 

 alpine moss calophyllum. 



22. Stems, slender, filiform, julaceous; wet rocks in moun- 



tain streams ; rare, .... concinnatum. 



Stems not julaceous, . . . . . 23. 



23. Costa excurrent into a long point, . . .24. 



Costa shortly or not at all excurrent, . . 25. 



24. Synoicous, fruiting in late summer and autumn, intermedium. 



Dioicous, fruiting in summer; leaves sometimes faintly 



bordered, caspilicium. 



25. Costa scarcely or not at all excurrent, tufts dense and 



wide, glossy red and green; capsule red brown. 

 Wet rocks in mountains; rare and beautifully col- 

 ored, ....... alpinum. 



Costa distinctly excurrent, tufts thin, ripe capsule pur- 

 ple-red, .... atropurpureuni ybicolor .) 



A. J. G. 



We hope that every person interested in the study of mosses 

 will make a special effort to attend the gathering of the clans 

 next June. For full particulars, see third page of cover. 



