MOSSES WITH A HAND-LENS 



tttt LEAVES SUCCUBOUS, ENTIRE, MARKEDLY LONGER THAN 



BROAD. 



JUNGERMANNIA. 



J. LANCEOLATA L. (LlOch- 



laena lanceolata of many au- 

 thors) is a common species 

 on rotten logs and banks. The 

 leaves are recurved at apex 

 when dry as in Jamsoniella, 

 but the plants are fully twice 

 as wide and the leaves are 

 much longer than broad. 

 Sterile it may be confused 

 ; and two with other forms, but with 

 the pretty puckered perianths 

 present, looking like a full bag tied with a string, there can be no 

 danger of confusing it with anything. The perianths are present 

 and well developed in August; the spores mature in spring. 



117. Jungermannia lanceolata; 

 portion of sterile stem X 

 perianths X 4. 



FIGURE 1 1 8. Portion of a stem of Chilo- 

 scyphns polyanthos rivularis natural size. 



CHILOSCYPHUS. 



C. POLYANTHOS 



(L.) Corda is our 

 only common spe- 

 cies. It is very 

 large, the stems 

 sometimes reaching 

 a foot in length 

 and, with the leaves, 

 being about T 8 T of an 

 inch wide. This species grows on rocks and soil in wet places 

 and occasionally in slowly flowing water. The color is a deep 

 green, sometimes becoming blackish ; when of this color it some- 

 what resembles Plagiochila asplenoides, but the leaves are very 

 entire and at the end of the shoots the underleaves can usually be 

 made out clearly, as the plant tissues are quite transparent. The 

 underleaves are rather small and are deeply bifid with very nar- 

 row slender segments. Spores in April and May. Var., rivularis 

 a floating form with leaves scarcely overlapping, often more 

 distant than those shown in the figure. 



