DicRANACE^.] loi [Ditrichum. 



Hab. — On crumbling rocks of clay-slate ; very rare. Fr. 3 — 4. 



Trethowell near Truro [Tozer, refound by Mr. Tellam 1871) I ! Saltash (Brent 1867) ! ! 



A Mediterranean species which like several other plants of that region 

 reaches the Cornish shore. Another fine species L. pallidum has not yet been 

 added to our list. 



5. DITRICHUM FLEXICAULE (Schleich.) Rampe. 

 Dioicous ; tall, slender, densely tufted ; stems branched, flexuose, 

 radiculose ; leaves secund, lanceolate at base, longly subulate, denticu- 

 late at margin. Capsule erect, ovate-oblong ; lid conic, rostellate. 

 (T. XV, A.) 



Syn. — Didymodon flexicaule Schlech. PI. cr. helv. Cent. 4, n. g (1807). Roehl. Deutsch. Fl. 

 iii, 56 (1813). Br:d. Mant. muse. 100 (i8ig) ; Bry. univ. i, 506 (1826). Hueben. Muse, 

 germ. 280 {1833). De Not. Syll. muse. n. 264 (1838), Hartm. Skand. Fl. 275. 



Cynodontium fiexicaule Schwaegr. Suppl. I, P. I, 115, t. 29 (1811). Funck Moost. 20, t. 

 14 {1821). 



Trichostomum flexic. Br. Sch. Bry. eur. fasc. 18-20, p. 15, t. 11 (1843). WiLS. Bry. Brit. 

 116, t. 42 (1855). HuSN. Mouss. nord-ouest 72 (1873). Hobk. Syn. Br. m. 62 (1873). 



Leptotrichum flexic. Hampe in Linn. 1847. C. Muell. Synops. i, 449 (1849). Jens. Bry. 

 dan. loi (1856). ScHiMP. Syn. 144 (i860), et 2 ed. 142 (1876). Berk. Handb. Br. m. 

 262 {1863). MiLDE Bry. siles. 137 (1869). De Not. Epil. Briol. ital. 514 (1869). Fl. 

 Dan. t. 2688, f. li. 



Dioicous; i — 4 in. high, in dense soft yellow-green, glossy tufts, 

 fuscescent below ; stems slender, geniculate, flexuose, branched, very 

 fragile, with abundance of fine radicles. Leaves rather lax, secund, 

 subfalcate, lanceolate, longly subulate, flexuose when dry ; nerve 

 flattened, excurrent in the subula, denticulate at apex; cells short, 

 elliptical ; perich. bracts broader and sheathing. Capsule on a slender 

 reddish seta, erect, rufous brown, ovate or elliptic, small, leptodermous, 

 slightly unequal ; annulus broad, compound ; lid conic, elongated ; teeth 

 of per. red, filiform, unequal, fragile and fugacious. 



Male plants slender in distinct tufts, rare ; bracts ovate, subulate, 



the innermost nerveless. 



Hab. — Limestone rocks and stony ground ; not uncommon. Fr. 6. 



Sometimes near the sea, as on Southport sands : sands at St. Minver, Cornwall (Tellam 

 187 1) ; Portmarnock sands, Ireland. Fruit not found in Britain. 



Var. p. densum (Br. Sch.) 



Compactly tufted ; stems straight, shorter and less branched. Leaves 

 erect, shorter, straight. 



Syn. — Br. Sch. Bry. Eur. Schimp. Synops. 145, et 2 ed. 143. WiLS. Bry. Brit. 116. 



Hab. — More mountainous districts. 



Ben Lawers (Dr. Stirton). Chee-dale and Miller's-dale (West) I ! Helsington Barrows, 

 Westmoreland (Barnes) ! ! Malham moor (Hobkirk 1879) ! ! 



This very pretty moss varies greatly in size, and except in the Jura 

 mountains is everywhere rare in fruit. 



