ORTHOTRICHUM. 257 



or oblong-lanceolate, obtuse or very slightly acuminate , margin 

 recurved nearly to apex ; cells hexagonal or rounded, incrassate, 

 faintly papillose. Capsule distinctly emergent or even slightly 

 exserted, bright golden brown, narrowly cylindrical, not con- 

 tracted below the mouth ; ribs 8, long, prominent , of 3-4 rows of 

 cells with the lateral walls strongly incrassate ; stomata immersed, 

 almost closed by the swollen overlapping cells ; peristome double, 

 outer teeth in 8 pairs, reflexed when dry, pale brown, finely 

 papillose, processes 8. Vaginula glabrous. Calyptra narrow, 

 pale greenish yellow, smooth, scarcely hairy. Autoicous. 



Hab. Trees, not common. Fr. summer. 



Resembling small plants of 0. affine, but readily known when with ripe fruit by 

 the bright orange-red capsules, narrowly cylindrical ; also by the narrower, more 

 obtuse leaves, with less prominent papillae, and the immersed stomata. 



14. Orthotrichum pallens Bruch (Tab. XXXV. L.). 



In small, pale green cushions, very short, not J-inch high. 

 Leaves lanceolate, somewhat obtuse or variously pointed ; margin 

 recurved ; basal cells very thin, almost hyaline, upper hexagonal 

 or rounded, rather large, somewhat incrassate, papillose. 

 Capsule emergent, oval-oblong, with a long tapering neck, pale 

 brownish yellow, when dry narrow, cylindrical , slightly con- 

 tracted below the mouth ; ribs 8, as long as the capsule ; stomata 

 immersed, but little covered by the overlapping cells, which are 

 not swollen ; peristome double, outer of 16 teeth closely joined in 

 pairs, pale yellow, reflexed when dry, finely papillose ; processes 

 8, with 8 rudimentary intermediate ones. Spores small. Calyptra 

 narrow, naked, pale. Vaginula glabrous or nearly so. Autoicous. 



Hab. Trees ; rare. Fr. summer. 



A small species, resembling O. Schimperi, but with longer narrower capsules and 

 narrower, less inflated calyptra. The capsule is less brightly coloured than in 0. 

 tenellum, with more open stomata, and is rather shorter and wider. 



15. Orthotrichum pulchellum Smith (Tab. XXXVI. A.). 



Tufts short, loose, olive green or yellowish green, soft, less 

 than £-inch high. Leaves erecto-patent, when dry flexuose and 

 slightly curled, from a narrow oblong base Ungulate-lanceolate or 

 linear, acuminate and acute ; margin widely recurved to near 

 apex ; nerve thin ; areolation rounded or hexagonal -rounded, 

 incrassate, in rather regular longitudinal lines, hardly papillose. 

 Capsule quite exserted, on a seta i-i l 4 lines long, small, pale 



