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Studies in rubiaceÆ

II.Spermacoce hispida Linn.,Guettarda speciosa Linn. and some cytomorphological considerations

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Proceedings / Indian Academy of Sciences

An Erratum to this article was published on 01 December 1941

Summary

The development of embryo-sac and embryo has been described inSpermacoce hispida andGuettarda speciosa.

The haploid numbers,Spermacoce (n = 28) andGuettarda (n = 22), previously reported, are confirmed. Meiosis is described in some detail.

The development of the strophiole has been traced and it is considered to have little phylogenetic importance.

The suggestion previously made that 11 was the basic number of the family is confirmed by data gathered in this paper.

The evolution of the chromosome numbers in this family is discussed in the light of data known in connection with nucellar evolution. A correlation is established between the two and a few tentative schemes of nucellar and chromosomal evolution suggested.

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Authors and Affiliations

  1. Annamalai University, India

    T. S. Raghavan & A. R. Srinivasan

Authors
  1. T. S. Raghavan
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  2. A. R. Srinivasan
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Additional information

An erratum to this article is available at http://dx.doi.org/10.1007/BF03049132.

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Raghavan, T.S., Srinivasan, A.R. Studies in rubiaceÆ. Proc. Indian Acad. Sci. 14, 412–426 (1941). https://doi.org/10.1007/BF03051152

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  • DOI: https://doi.org/10.1007/BF03051152

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