CRYPTOGAMIA MUSCI. 5i 



25. TRICHOSTOMUM. 



* Leaves with diaphanous points. 



1. T. lanuginosum, stems elongated, somewhat pinnate; branches 

 short ; leaves lanceolate- subulate, their long diaphanous points 

 toothed ; fruitstalks short, on lateral branches ; capsule ovate ; lid 

 subulate. 



Hal, Abundant on all our higher moors, where it is con- 

 spicuous from its hoary foliage. 



2. T. canescens, stems erect, irregularly branched ; leaves ovate- 

 lanceolate, recurved, channelled, the diaphanous points obscurely 

 serrate ; fruitstalks 1 inch, flexuose ; capsule ovate ; lid long, 

 subulate. 



Var. 1. Branches erect, longer. T. canescens, SMITH. 

 Var. 2. Branches very short, patent T. ericoides, SMITH. 



Hob. On all the Lammermuirs, plentiful ; also on Lam- 

 berton Moor. Var. 2. is the least common. 



3. T. heterostichon, stem csespitose, irregularly branched ; leaves 

 lanceolate-acuminate, concave, entire ; capsule cylindraceous, with 

 a short fringe ; lid long, subulate. 



Hal. On whinstones in moors, frequent : also on sand- 

 stone rocks in Longridge Dean. 



* * Leaves never diaphanous at their points* 



4. T. aciculare, stems somewhat erect, branched ; leaves broad- 

 ly-lanceolate, obtuse, with revolute margins, the apex obscurely 

 serrate ; capsule ovate-oblong ; lid subulate Dicranum aciculare, 

 SM. Fl. Brit. 1212. 



Hab. On large stones in rivers and burns, not rare in our 

 moor and upland districts. Spring. 



5. T. polyphyllum, stems branched, tufted ; leaves lanceolate- 

 subulate, their margins recurved, coarsely serrated above, much 

 crisped when dry; capsule elliptical; lid rostrate Dicranum 

 polyphyllum, SM. Fl. Brit. 1226. 



Hab, On rocks in the lower parts of Lumsden Dean, a 

 station less remarkable for its many fine plants, than 

 for the rugged grandeur of its scenery. June. 



C2 



