Studies in the Glossopteris Flora of India - 19. Two new species of Dadoxylon from the Lower Gondwanas of India

Abstract

Two new species of Dadoxylon, viz. Dadoxylon gondwanense and Dadoxylon kharkhariense are described. The former is characterized by radial pitting 1-5 seriate, contiguous, alternate and subopposite; cross-field pits 2-8; medullary ray uniseriate and biseriate and 1-43 cells high. The latter wood Dadoxylon kharkhariense is characterized by the presence of pitting both on the radial and tangential wall of the tracheids, 1-3 seriate, alternate, sub-opposite and opposite; contiguous or separate, sometimes in distinct groups of 2 or 3 pits; crossfield pits 2-5 (7); medullary rays uniseriate, rarely biseriate.