272 HANDBOOK OF BRITISH MOSSES. 



1. Fruitstalk arched or geniculate (Campylopodei) . 



89. CAMPYLOPUS, Brid. 



Sporangia mostly aggregate, but with separate perichsetia ; 

 fruitstalks arcuate or geniculate and deflexed ; ring large ; 

 veil cucullate, fringed at the base ; peristome single, of six- 

 teen narrow-lanceolate, deeply bifid teeth ; leaf-cells sub- 

 quadrate or rhomboid at the base, and narrow and elongated 

 above. 



1. C. densus, Br. £f Schimp. ; densely tufted; stems radi- 

 culose ; leaves crowded, erecto-patent, rather rigid, lanceolate, 

 subulate ; nerve broad, thin, occupying the greater portion of 

 the leaf j leaf-cells at the base lax. — Hook, fy Wils. t. xl. 



On sandstone rocks and on turfy sandy ground. Ireland 

 and England. Bearing fruit in winter. 



Dioicous, forming yellow-green patches. Stem erect, di- 

 chotomous, radiculose, sometimes with axillary deciduous 

 branches; fruitstalk arched from the middle; sporangium 

 oval, furrowed when dry; lid rostrate. This species has a 

 looser reticulation, and leaves more gradually narrowed above 

 than in C. torfaceus. 



2. C. torfaceus, Br. ty Schimp. ; caespitose, slender, rooting 

 at the base only ; leaves loosely set, spreading, setiform, from 

 an ovato-lanceolate base ; nerve moderately broad ; sporan- 

 gium small ; fruitstalk short. — Hook, fy Wils. t. xl. 



On peaty soil. Bearing fruit great part of the year. 

 Differs from the last in its longer, less crowded, setaceous 

 leaves, with a narrower and thinner nerve and broader ring. 



3. C. setifolius, Wils. ; stem slender, elongated, dichoto- 

 mous ; leaves distant, spreading, setaceous, from a lanceolate 

 base, serrulate. — Hook, fy Wils. t. xl. 



Eocky mountainous places. Ireland, 



