1. Babcock, E. B. and Navashin, M. “The genusCrepis Biblog,”Genet., 1930,6, 1.
2. ----- .. “Basic chromosome number in plants with special reference toCompositae,”New Phytologist, 1934,33.
3. Darlington, C. D. and Janaki Ammal, E. K.Chromosome Atlas, George Allen and Unwin Ltd., 1945.
4. —— and Moffet, A. A... “Primary and secondary chromosome balances inPyrus,”Journ. of Gen., 1930,22, 129.
5. Deshpande, P. K... “Morphology of the endosperm inCaesulia axillaris Roxb.,”Curr. Sci., 1960,29, 56.