This issue brings out papers on different aspects of pollen-spore research. The papers refer to honey bees as efficient pollen vectors in Bt-cotton hybrid plants; pollination biology of two economically important forest plant species, Acacia Sinuata and Semecarpus anacardium; pollen viability and storage in higher plants; identification of cytoplasmic male sterile lines for seed protein improvement in pearl millet and their relation to page patterns and seedling phenotypes; mangrove history in relation to sea level changes based on pollen studies; aerobiology and biochemical aspects of allergenic pollen plants, Trema orientalis and Peltophorum inerme; pollen analysis and physico-chemical characteristics of some honeys; pollen-flow enhancement by employing honey bees for improving the yield of RCH-2 Bt Cotton Hybrid Plant; Passerine birds as effective pollen vectors in some forest plants; SEM studies of biodeterioration of aerobioparticles; and pollen plants of honey bees in mangrove forests. This issue also covers a paper on the discharge of tetraspores and carpospores of a estuarine algal species, Caloglossa leprieurii. Less in known about the estuarine algae with reference to their role in mangrove ecosystems and their economic importance. In this context, this paper is an addition to the existing knowledge on the estuarine algae.