HANDBOOK OF MOSSES. 



The capsule is oblong, pale brown, with a longish straight 

 beak when ripe, but becomes whitish and somewhat spindle- 

 shaped when dry. 



O. Lyellii is abundant on the elm and ash, forms large 

 yellowish-green loose tufts, has the leaves much recurved 

 when moist, twisted when dry, the leaf-margins plane, and 

 both surfaces -covered with prominent papillae or minute 



elevations, and much 

 clothed with brownish 

 jointed conferva-like pro- 

 cesses. The fruit very 

 rare. 



O. diaphanum will be 

 found on many habitats, 

 trees, old palings, walls, 

 etc. It grows in small, 

 bright-green tufts, and has 

 the leaves terminated 

 by translucent toothed 

 whitish tips. 



O. leiocarpum is rare 

 in the Midlands, and is 

 readily known from the 

 other species by the cap- 

 sule, which is quite 

 smooth, *. e. without 

 striae, when dry. This 

 I find on the Ontario 

 poplar. 



The Ulotas have most 

 of the characteristics of 

 the Orthotrichums, but 



have usually more hairy calyptras, and narrower leaves, 

 much crisped when dry. 



Ulota intermedia, which occurs on both elm and ash, 

 forms little yellowish-green tufts, and has the leaves much 

 twisted when dry. From May to July is the best season 

 for all the above in perfect fruit. 



Cryphaa heteromalla is a local moss, occurring mostly on 



FIG. 20. Upper figure, Fissidens taxi- 

 folius, fruit-stalks lateral. Left-hand 

 figure, i, pear-shaped capsule, and, 2, 



laris. Central figure, Zygodon viri- 



convex operculum of Funaria fascicii 



Central figure, 

 dissitmis. Right-hand figure, Ortho 



trichum affine ; x, plant natural size ; 

 b, calyptra. 2, striated capsule and hairy 

 calyptra, enlarged. 



