1912] DEUTSCH—TARGIONIA 503 
@ N 
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LITERATURE CITED 
. Lertces, H., Untersuchungen iiber die Lebermoose 6:131-136. 1881. 
: Cana 0: H., Mosses and ferns. 190 
AVE s, F. : Can eaten to the biology i the Hepaticae. Part I. Tar- 
gionia, > eae Preissia, Monoclea. 1904. 
- Barnes, C. R., and Lanp, W. J. G. The origin of air chambers. Bor. Gaz. 
44:1907-213. 1907. 
