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Cyto-morphological studies inAsteracantha longifolia nees. (Hygrophila spinosa. T. and.)

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Proceedings / Indian Academy of Sciences

Summary

The haploid and diploid chromosome numbers ofAsteracantha longifolia Nees., are 16 and 32 respectively.

The floral parts develop in the order calyx, andrœcium, corolla, and gynœcium. The anatomy of the stem, root and leaf and the morphology of the thorns have been described.

The development of the micro- and megaspores is traced. In the embryo development suspensor haustorium and micropylar endosperm haustorium have been observed. The endosperm is cellular and the micropylar haustorium is bi-nucleate.

The morphology of the jaculator is described.

In regard to the position of the genus in the family correlation between Hobein’s classification on the basis of cystolith features and the chromosome numbers is suggested.

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Authors and Affiliations

  1. Annamalai University, Annamalainagar

    K. Rangaswamy

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  1. K. Rangaswamy
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Additional information

Communicated by Prof. T. S. Raghavan

Thesis (in part) approved for the degree of Master of Science of the Annamalai University.

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Rangaswamy, K. Cyto-morphological studies inAsteracantha longifolia nees. (Hygrophila spinosa. T. and.). Proc. Indian Acad. Sci. 14, 149–165 (1941). https://doi.org/10.1007/BF03049645

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  • DOI: https://doi.org/10.1007/BF03049645

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