MOSSES WITH A HAND-LENS 21 



ter, but apart from the calyptra are more characteristic when dry 

 and empty. The tree-growing species furnish good collecting for 

 winter and early spring, when most other mosses are buried under 

 the snow. 



Wkissia EirRii.=Ulota Mohr. 



The Puckered Weissia= IV. coarctata (Beauv. ) Lindb.= Ulota 



Ludwigii Brid. 

 The Crisped W.= IV. ulophylla Ehrh = Ulota crispa Brid. 



The variety = W. ulophylla crispula{ Bruch) Hammar 



= Ulota crispula Brid. 

 The American Weissia= IV. Americana (Beauv.) \Andb.= Ulota 



HutchinsicE Schimp. 



SPLACHNUM 



THE odd looking moss represented in Fig. 16 is not very com- 

 mon and will not be found readily by most students. It is 

 so striking in appearance that no one can fail to recognize 

 it. The spores are borne in the slender upper portion ; the swollen 



and colored lower portion is 

 the neck of the capsule, 

 which is covered with stom- 

 ata and filled with loose 

 tissue suitable for the as- 

 similation of carbon dioxide. 

 When dry, this portion be- 

 comes irregularly shrunken 

 in a manner very difficult to 

 represent in a drawing. 



Fig. 16. Splachnum ampuUaceum. leaf 



X io; capsule, ripe and unripe. ■ 5. (The 

 plant and capsules represented are 

 rather small, as they are often found of 

 twice this si/.e 1. 



There are several species 

 of Splachnum, but the only 

 one likely to be found is 

 S. ampuUaceum L. 



There are several other 

 rare mosses of the Splach- 

 num Family, all remarkable 

 for the swollen neck (much 

 less conspicuous than in 

 Splachnum, however), and 

 for growing on animal ex- 

 creta or decaying animal 

 tissue. 



