• V S Rao

      Articles written in Proceedings – Section B

    • The perianth ofSaraca Indica

      V S Rao K Sirdeshmukh

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      1. The vascular anatomy of three abnormal flowers ofSaraca indica with 5 perianth segments has been studied and compared with that of the normal ones with a 4-membered perianth.

      2. The contention of the authors already published, that one of the 4 perianth segments of the normal flower is a double one is supported by the vascular anatomy of these teratological specimens.

      3. The 2 “midrib bundles” received by the double segment of normal flowers supply adjacent separate members in the abnormal flowers.

    • The floral anatomy of some asclepiadaceae

      V S Rao Arati Ganguli

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    • The floral anatomy ofAncistrocladus

      V S Rao

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      The floral anatomy ofAncistrocladus heyneanus, the only representative in India of the genus, is studied. The nipple-like projection above the ovary is shown to be the upper part of the ovary itself and not the basal connivant part of the styles as commonly mentioned inFloras and adopted by Keng in his paper onA. tectorius. A number of earlier observations and conclusions are shown to be due to faulty interpretations of the structure.

    • The floral anatomy of the rare apostasias:Apostasia species

      V S Rao

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      Apostasia, one of the 3 genera of the interesting family Apostasiaceae, has altogether 4 species, but two of themA. parvula Schltr. andA. nipponica Masamune are of very limited distribution, the former being confined to certain parts of Borneo, and the latter being, endemic to Ryukyus. Of the two remaining species,A. wallichii R. Br. was studied by the present author earlier (Rao, 1969). This paper deals with the floral vasculature ofA. odorata Bl., and makes a comparison with that ofA. wallichii. Except for the fact that two of the petal traces bear the traces for the functional stamens, the former are unbranched. The overlapping margins of both sepals and petals are supplied by branching lateral traces of the sepal strands. There is a staminode which gets its vascular supply as a branch from one of the sepal traces. The androecium is represented by two functional stamens and a staminode. The latter belongs to the outer whorl while the stamens belong to the inner whorl of the androecium.

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