Geometric Aspects of Pollen: Polyhedrons (Vernonieae – Asteraceae), Rotated Symmetry (Trichanthereae – Acanthaceae) and Pyramidal to Prismatic Spinules (Nothapodytes – Icacinaceae)

References

• Blackmore , S. 1986 . The identification and taxonomic significance of lophate pollen in the Compositae . Can. J. Bot. , 64 : 3101 – 3112 .
   Google Scholar
• Erdtman , G. 1969 . “ Handbook of Palynology – Morphology – Taxonomy – Ecology. ” . In An introduction to the study of pollen grains and spores. , Copenhagen : Munksgaard .
   Google Scholar
• Lobreau-Callen , D. 1973 . Le pollen des Icacinaceae: II. Observations en microscopie électronique, corrélations, conclusions . Pollen Spores , 15 : 47 – 89 .
   Google Scholar
• Pocock , S. A. J. and Vasanthy , G. 1988 . Cornetipollis reticulata, a new pollen with angiospermid features from Upper Triassic (Carnian) sediments of Arizona (U.S.A.), with notes on Equisetosporites . Rev. Palaeobot. Palynol. , 55 : 337 – 356 .
   Web of Science ®Google Scholar
• Praglowski , J. 1987 . Pollen morphology of Tribulaceae . Grana , 26 : 193 – 211 .
   Web of Science ®Google Scholar
• Stix , E. 1960 . Pollen morphologische Untersuchungen an Compositen . Grana Palynol. , 2 : 41 – 104 .
   Google Scholar
• Van Campo , M. 1976 . “ Patterns of pollen morphological variation within taxa. ” . In The evolutionary significance of the exine. , Edited by: Ferguson , I. K. and Muller , J. 125 – 137 . London : Acad. Press .
   Google Scholar
• Vasanthy , G. 1976 . Pollen of the south Indian hills. , Pondichéry : Trav. Sect. Sci. Tech. Inst. Fr. 15 .
   Google Scholar
• Vasanthy , G. 1985 . Palynology and certain aspects of Histology of south Indian Vernonieae (Asteraceae). , Ph. D. Dissert. Madras : Madras Univ. .
   Google Scholar
• Vasanthy , G. and Pocock , S. A. J. 1986 . Radial through rotated symmetry of the striate pollen of the Acanthaceae . Can. J. Bot. , 64 : 3050 – 3058 .
   Google Scholar
• Vesque , J. 1883 . Sur l'organisation mécanique du grain de pollen . C. R. Acad. Sci. , 96 : 1684 – 1687 .
   Google Scholar
• Volk , T. 1985 . Majesty of the sphere: why so many things in nature are round. . Sciences (Nov./Dec) , : 47 – 50 .
   Google Scholar
• Wodehouse , R. P. 1928 . The Phylogenetic value of pollen-grain characters . Ann. Bot. , 42 : 891 – 934 .
   Google Scholar
• Wodehouse , R. P. 1935 . Pollen grains. Their structure, identification and significance in science and medicine. , New York : Hafner Publ. Co. .
   Google Scholar