EURHYNCHIUM. 413. 



/Leaves smooth, even when dry ; capsule suberect 11. myosuroides 



3\Leaves striate, especially when dry; capsule cernuous 14 



("Branches long, drooping ; Is. almost squarrose 14. striatum 



4\Smaller; branches erect ; Is. erecto-patent, less striate /f. striatulum 



{Seta rough ; synoicous or dioicous 16 

 Seta smooth ; autoicous 18 



c /Synoicous ; plant bright green 4. speciosum 



1 \Dioicous ; plant smaller, usually dull or yellowish green 17 



/Plant straggling, Is. smooth 6. Swartzii 



'\Plant bearing short, crowded, erect branches; Is. striate; seta short 6*. abbreviatum 

 o/Ls. firm ; nerve strong, nearly reaching apex ; more or less aquatic ...16. rusciforme 



1 \Nerve thin, about 3 length of leaf; terrestrial 19 



Ls. roundish-ovate, much twisted when dry ; cells 12 (i wide ...20. rotundifolium 



Ls. narrower, scarcely twisted ; cells 5 or 6 p. wide 20 



/Ls. very concave, more or less imbricate, shortly pointed if. murale' 



/Stem short, rooting ; on walls, trees, &c 18. confertum 



.,{ 



^Ls. scarcely concave, acuminate 21 



2I \Stem often longish, rooting at base only; on the ground ig. megapolilammi 



* Seta rough. 



1 . Eurhynchium cirrosum Jur. (Hypnum cirrosum Schwgr. ; 

 Brachythecium cirrosum Schp., Syn.) (Tab. LIII. J.). 



In loose, straggling patches; stems short, irregularly branched,, 

 prostrate ; branches robust, tumid, julaceous, sub-obtuse, longer 

 or shorter, straight, erect or depressed ; bright or golden green, 

 glossy, brown below. Leaves closely imbricated, very concave, 

 cochleariform, widely ovate-oblong, large, 1 line long or more, 

 rounded at apex and suddenly contracted into a very long hair- 

 like point, decurrent at base, plicate when dry, entire or slightly 

 denticulate above ; nerve slender, hardly reaching beyond the 

 middle, sometimes forked ; cells longly linear-rhomboid, acute or 

 slightly obtuse, sometimes somewhat vermicular, at angles wide, 

 sub-quadrate. Fruit unknown. 



Hab. Alpine rocks, very rare ; only on Ben Lawers. 



A very distinct plant, resembling no others of the British mosses except perhaps 

 E. piliferum, which differs in the more slender branches with the leaves much less 

 densely imbricated, and the areolation laxer, becoming especially wide at the base. It 

 is by many authors considered a variety of the continental E. Tommasinii Sendt. 

 (E. Vaucheri B. & S.), and its affinity to that species is so undoubtedly close that I 

 have thought it better to place it in this genus than in Brachythecium, with which it 

 is usually united, at least in our British works. There appears indeed to be absolutely 

 no difference in the leaves between this plant and some unquestioned forms of E. 

 Tommasinii beyond the greater concavity of those of the former ; the areolation 

 appears to be often identical in both, although in this the cells are more frequently 

 somewhat vermicular and obtuse at the ends than in that ; and although the leaves- 

 in the present plant are characteristically much more suddenly piliferous, still some 

 leaves may be found with less abruptly contracted points, while on E. Tommasinii 

 leaves frequently occur exhibiting this character exactly, though less concave. Ort 



