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

  • K. Rangaswamy


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.


Tapetal Cell Primary Wall Cell Archesporial Cell Secondary Association Hypodermal Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Indian Academy of Sciences 1941

Authors and Affiliations

  • K. Rangaswamy
    • 1
  1. 1.Annamalai UniversityAnnamalainagar

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