182 HISTORY OF BRITISH MOSSES. 



Fr. May. The foliage is very dark below, but at the apex 

 the leaves have a brownish-yellow hue. Its capsule resem- 

 bles that of 0. crisptim. 



14. Orthoteichum Ludwigit, Brid, [Liuhvigian Bris- 

 tle Moss.) Stems creeping ; leaves erecto-patent, narrowly 

 lanceolate, crisped when dry; capsule pyriform, smooth, 

 furrowed only at the extremity; mouth extremely contracted; 

 calyptra remarkably hairy. — Eng. Fl.p. 5G; IIUIL Sijn.pt. 

 \.p. 714. 



In subalpine districts, growing chiefly on young Oaks 

 and Birches; pretty abundant in various Scottish glens. 

 Tr. August. Readily distinguished by the very contracted 

 mouth of its capsule, whence a synonym 0. clausum, or 

 "shut up.'' The cilia are so very delicate and fugacious 

 that they are regarded by some authors as only the vestiges 

 of a membrane that covers the teeth before the lid drops off. 



15. Orthotrichum crispum, Hedw. {Curled Bristle 

 Moss.) Stems erect ; leaves lanceolato-subulate, much 

 crisped when dry ; capsule oblongo-clavate, furrowed ; teeth 

 of the peristome eight, geminate, patent, reflexed ; calyptra 

 very hairy. — Eng. El. p. 56 ; Milll. S}jn.p)t. I. p. 712. 



On the stems of trees in woods, abundant ; rare on stones. 

 !Fr. August. A well-marked and common species, forming 



