Summary
The floral anatomy ofErythroxylum coca, E. mooni andE. monogynum and the embryology of the two latter species have been studied.
The sepals are three-traced and the sepal laterals arise conjointly. The petals are appendaged and single-traced. Obdiplostemony is present inErythroxylum coca andE. mooni. The ovule in the fertile loculus receives a pair of traces from the two plexes formed by the ventrals of the fertile and sterile carpels.
The tapetum is of the secretory type. The tricolporate pollen grains are two-nucleate at the shedding stage.
The ovules are crassinucellate, bitegmic and anatropous. An endothelium differentiated from the innermost layer of the inner integument surrounds the embryo-sac which develops according to the Polygonum type.
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References
Bentham, G. and Hooker, J. D.Genera Plantarum, 1862–93, London.
Engler, A. and Prantl, K. ..Die Natürlichen Pflanzenfamilien, Leipzig, 1931.
Erdtman, G. ..Pollen Morphology and Plant Taxonomy, U.S.A., 1952.
Heimsch, C. Jr... “Comparative anatomy of the secondary xylem in the Gruinales and Terebinthales of Wettstein with reference to taxonomic grouping,”Lilloa, 1942,8, 83–198.
Hutchinson, J. ..Families of Flowering Plants, London, 1926,2.
Lawrence, G. H. M. ..Taxonomy of Vascular Plants, New York, 1951.
Mauritzon, J... “Zur Embryologie Einiger Gruinales,”Sevensk. Bot. Tidskr., 1934,28, 84–102.
Saunders, E. R. ..Floral Morphology, Cambridge, 1937,1.
Schnarf, K. ..Vergleichende Embryologie der Angiospermen, 1931, Berlin.
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Communicated by Dr. K. Subramanyam,f.a.sc.
Communicated by Dr. K. Subramanyam,f.a.sc.
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Narayana, L.L. Studies in erythroxylaceæ—I. Proc. Indian Acad. Sci. 51, 270–275 (1960). https://doi.org/10.1007/BF03050043
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DOI: https://doi.org/10.1007/BF03050043