D Jeevan Kumar
Articles written in Proceedings – Section B
Volume 80 Issue 1 July 1974 pp 18-25
Floral parts arise in acropetalous succession. A transection of an young anther lobe shows a layer of microspore mother cells surrounded by tapetum, a middle layer, an endothecium and an epidermis. Microspore tetrads are decussate and tetrahedral. Tapetum is glandular. Pollen grain is shed at the 3-nucleate stage. Endothecium exhibits fibrillar thickenings.
Embryosac development is of the polygonum type. Placental nutritive tissue is present only at the micropylar region. Embryosac is surrounded by the endothelium only at the central region.
Fertilisation is porogamous and endosperm is