Supplement.] 234 



a long oblique beak. Peristome rudimentary, the teeth scarce showing 

 above the mouth of capsule, pale and thin, obtuse, composed of only 2 — 3 

 articulations, which are sometimes perforated. 

 Hab. — Crevices of limestone rocks ; not common. Fr. 4 — 5. 



Westmoreland and Ingleton, Yorkshire [Prof. Barker). N.W. Lancashire {Wheldon). 

 Derbyshire, Carnarvonshire {D. A. Jones). Wearhead, Durham, and Jackdaw crag 

 quarry, Tadcaster {Ingham 1898) ! ! 



The insignificant peristome has probably been often overlooked, and led to 

 the belief that it was absent. It may be best observed before the lid separates, 

 by soaking the capsule in water and then compressing it on a stage-plate, when 

 the lid is forced oflF and the peristome is evident. 



BARBULA (§ EUBARBULA) CORD AT A (Juratz?) 

 Dioicous ; growing in small brownish-green cushions. Stems simple 

 or dichotomous. Leaves broadly ovato-lanceolate, cordate at base, carinate- 

 concave, margin reflexed, nerve thick, reaching the point or excurrent, 

 cells all minute. (T. CXXVI, B.) 



Syn. — Didymodon cordatus Juratz. Bot. Zeit. 1864 et 1866, p. 177. De Not. Epilogo 567 (1869). 

 ScHiMP. Synops. 2 ed. 162 (1876). Husnot Muse. gall. 83, t.23 (1885). Limpr. in Rabenh. 

 D. kr. fl. Laubm. i, 551 (1888). 



Trichostomum cordatum Milde Bry. siles. 203 (1869). 



Dioicous ; near Barbula lurida, but stouter, in short, lax, brownish- 

 green tufts. Leaves erecto-patent, when dry incurved and appressed, from 

 a broad cordate concave bcise, lanceolate, carinate, margin entire and 

 revolute ; nerve very stout, ending in the point or excurrent ; cells above 

 as in B. lurida, but less incrassate, roundish angular, more thickened in 

 the middle, somewhat laxer and quadrate, or shortly rectangular at base ; 

 in the axils a collection of brown oval two or more celled gemmae. 

 H.^B. — Old walls and rocks, rare. 



Saunton cliffs, Braunton Burrows, N. Devon (E. M. Holmes 1903) ! ! 



BARBULA CURVIROSTRIS. 



Var. y. insignis Dixon. Journ. Bot. 1902, p. 377. 



Robust, 3 — 5 in. high, in large tufts, dark or brownish-green above; dark 

 brown at base, stems densely tufted, often radiculose. Leaves long, lax, when 

 dry divergent below, curled and incurved above, when moist widely spreading from 

 an erect, somewhat sheathing base, gradually tapering to a subacute point ; cells 

 rectangular and subquadrate, pellucid. Capsule narrowly elliptic, tapering into a 

 distinct neck, dark brown, pachydermous. 



Hab. — Wet alpine rocks. 



Meall-naH-Tarmachan {Dixon 1893). Ben Laoigh {Dixon and Binstead). Acharn, Lochay 

 bridge, Cam Creagh and Tyndrum. Glencoe and Ballachulish, Argyll. Inchnadamph, 

 Sutherland. 



