— 53— 



2. Plants of a distinctly tree-like habit: median leaf cells 



5-7: I. 



C. Americanum, 



Plants growing in dense tufts so that the tree-like habit is 

 obscured, or prostrate and hypnoid in appearace; 

 median leaf cells 2-3; i, C. Kindbergii 



I. Climacium Dendroides (L.) Web. & Mohr, 1. c. 



Plants bright green, 7-9 cm. high ; branches spreading, flexuous ; branch 

 leaves loosely imbricate, 2 x 0.7 mm., the upper oblong lanceolate; lower 

 ovate — lanceolate: denticulate at base, sharply serrate above, obtuse, bisul 

 cate, costate nearly to apex; basal angles sometimes slightly enlarged; 



Fig. I. a, Climacium Americanum x i. b, Capsule x 10. c. Branch leaf 

 X 10. d. Branch leaf of C. dendroides x 10. e, Capsule of the same x 10. 



