TORTULACE^.J 255 [Leptodontium. 



thirds length of caps, from a conic base, obliquely rostrate ; teeth 

 very scabrous, slender, 2 3 times convolute, falling away with the 

 columella. 



Male infl. terminal, subdiscoid, with numerous antheridia, bracts 

 lanceolate-subulate. 

 HAB. Wet mountain rocks, always sterile. 



Ben Lawers (McKinlay 1865) ! ! Clova (Fergusson) ! ! Ben Laoigh, Perth (Ewing 1885). 

 Roundstone, Connemara (Moore 1853) ! ! 



Very like M. tortuosa, but distinguished by its straight leaves with longly 

 excurrent triangular nerve. 



8. LEPTODONTIUM HAMPE. 



Linnaea xx, 70 (1847). 



Leaves squarroso-reflexed, complicato-concave, flexuose, the margin 

 serrulate or eroso-crenulate. Caps, leptodermous, narrow, erect, lid 

 conic, peristome of 32 filiform, straight, erect, smooth teeth, unequal, 

 separate or anastomosing here and there in pairs, or connascent ; 

 calyptra cucullate. Der. AETTTOS slender and oSous a tooth. 



A small but natural genus, of which the types are the Kast Indian 

 L. squarrosum (HooK.) HAMPE and L. aggyegatum C. MUELL. and principally 

 distinguished by the squarrose serrate leaves. 



Another European species is the rare Trichostomum subalpinum DE NOT. 



CLAVIS TO THE SPECIES. 



Stems short, slender ; leaves without a paler border. 



Leaves broad at point, nerve vanishing. flexifolium 

 acuminate at point, nerve excurrent, gemmiferous. gemmascens 



Stems tall, robust ; leaves with a pale border. recurvifolium 



i. LEPTODONTIUM FLEXIFOLITJM (Dicks.) Hampe. 



Dioicous ; short, nearly simple. Leaves reflexed, oblong-ligulate, 

 apiculate, coarsely serrate at apex, nerve lost at or below the point. 

 Caps, small, narrowly cylindric, lid conic with a short obtuse point. 

 (T. XXXVII, E.) 



SYN. Bryum flexifolium DICKS, pi. crypt. Ill, 5, t. 7, f. 9 (1793). WITH. Bot. arr. br. veg. 



3 ed. iii, 815 (1796). HULL Br. fl. P. 2, 258 (1799). BRID. Muse. rec. II, P. Ill, 



55 (1803). 

 Trichostomum flexifolium SM. Fl. brit. 1246 (1804), Eng. bot. t. 2493. BRID. Sp. muse. I, 



242 (1806), Mant. 86 (1819), Bry. univ. i, 499 (1826). C. MUELL. Synops. i, 577 (1849). 



MILDE Bry. siles. 106 (1869). 

 Didymodon flexifolium HOOK. TAYL. Muse. br. 66, t. 20 (1818). GRAY Nat. arr. br. pi. 



i, 742 (1821). HOOK. Fl. scot. P. II, 135 (1821) ; Br. fl. ii, 28 (1833). SCHWAEG. Suppl. 



II, P. 2, t. 184 (1826). BR. SCHIMP. Bry. eur. fasc. 2930, Mon. 6, t. 4 (1846). 



RABENH. Deutsch. kr. fl. ii, S. 3, 103 (1848). WILS. Bry. brit. 109, t. 20 (1855). 



SCHIMP. Synops. 133 (1860), 2 ed. 163. BERK. Handb. br. m. 265 (1863). HOBK. Syn. 



br. m. 60 (1873). HUSN. Mouss. nord-ouest 69 (1873). 

 Leptodontium flexifolium HAMPE Linnaea xx, 70 (1847). LINDB. rj e Tort. 227 (1864). 



