lAW A Bulletin n.s., Vol. 2 (4), 1981 OCCURRENCE OF PERFORATED RAY CELLS IN THE WOOD OF DRYPETES ROXBURGHII (WALL.) HURUSAWA* by Nazma**, B. Sundarsivarao and R. Vijendrarao,*** Andhra University, Waltair, India Summary Anatomical features of the wood of Drypetes roxburghii (Wall.) Hurusawa, Euphorbiaceae are described in detail. Occurrence of ray cells with scalariform perforations is reported for the first time in this taxon. This study supports the inclusion of Drypetes in the Aporosa type of the Phyllanthoideae, Le., in accordance with the classification of the genera of Euphorbiaceae on anatomical grounds by Metcalfe and Chalk (1950). Inclusion of this species by Hurusawa (1954) and Webster (1967) in Drypetes, is also supported. Introduction Euphorbiaceae constitute one of the interesting and intriguing families in view of their diverse anatomical structure (Metcalfe & Chalk, 1950; Stem, 1967; Hayden, 1977). The family, represented by 300 genera and 7000 species (Webster, 1967; Hans, 1973), is cosmopolitan in its distribution and includes herbs, shrubs and trees. Largely due to extreme variations in their ex om orphic features, classification of Euphorbiaceae into the lower taxonomic hierarchies has received considerable attention by those approaching the family in different botanical pursuits. Relevant literature on the wood
IAWA Journal – Brill
Published: Jan 1, 1981
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