GLYPHOM1TRIUM. 159 



seriate, incrassate. Seta very short, 1-2 lines, capsule small, 

 oval-globose, pale reddish brown with a red mouth, when dry and 

 empty wide-mouthed and sub-urceolate ; lid longly rostrate ; 

 peristome teeth red, in pairs, broad, lanceolate , reflexed when dry, 

 entire, closely barred, inserted below the mouth. Calyptra 

 whitish, at first narrow, plicate, reaching below the capsule and 

 embracing the seta, afterwards ventricose, shining and hardly 

 plicate, split at several points, on one side almost to apex. Spores 

 large, 30-40 /*. Autoicous. 



Hab. Basaltic and siliceous rocks. Rare. Fr. summer. 



A pretty little plant, readily known by its small compact tufts, curled leaves and 

 numerous minute reddish capsules, with white shining calyptra. Without the latter 

 organ it bears a slight resemblance to Rhabdoweisia, but the similarity is only 

 superficial. It grows well on the basaltic pillars of the North of Ireland and the 

 West Coast of Scotland, and is also found in Wales and England, but has not been 

 discovered beyond the British Isles. 



34. CAMPYLOSTELIUM B. & S. 



Minute, gregarious plants ; leaves small, very narrow, crisped 

 when dry, areolation punctate above. Seta arcuate, capsule 

 small, calyptra mitriform, smooth. Peristome teeth narrow, 

 cleft, equidistant. 



A small genus, the place of which is somewhat uncertain ; it 

 is usually placed near Seligeria, to which it has close affinity, but 

 in leaf structure and in the mitriform calyptra and peristome it 

 comes very near Glyphomitrium and Grimmia. 



1. Oampylostelium saxicola B. & S. (Dicranum saxicola 



W. & M., Glyphomitrium saxicola Mitt., Braithw. Br. M. Fl.) 



(Tab. XXIV. H.). 



Minute, dwarf, gregarious ; leaves crowded above, longly 

 linear-subulate from a narrow oblong base, sub-acute, flexuose 

 crisped when dry ; margin plane, entire, slightly incrassate above ; 

 nerve rather stout, vanishing in apex ; cells at base lax, hyaline, 

 thin-walled, rectangular; above smaller, elliptic, incrassate, in 

 the limb small, rounded, often bi-stratose, incrassate. Seta 

 slender, cygneous, when mature and dry erect and flexuose ; 

 capsule elliptic-oblong, pale, thin-walled, smooth ; calyptra 

 subulate, lobed; lid longly rostrate; peristome teeth reddish, 

 unequally cleft. Autoicous. 



Hab. Sandstone and siliceous rocks ; not common. Fr. winter. 



