1. Abrams, L. R. “Structure and development ofCryptomitrium tenerum,”Bot. Gaz., 1899,37, 110–21.
2. Ahmed, S. “A study ofAitchisoniella himalayensis,”Proc. Ind. Acad. Sci., 1938, (B)7, No, 4.
3. Anderson, E. N. “Morphology of the sporophyte ofMarchantia domi-gensis,”Bot. Gaz., 1929,88, 150–64.
4. Ashworth, J. H. “On the structure and contents of tubers ofAnthoceroa tuberosus,”Mem. and Proc. Manchester Literary and Philosophical Society, 1846,41, No. 2.
5. Black, C. A. “The morphology ofRiccia frosterii,”Ann. Bot., 1913,27, 511–32.