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Studies in Bignoniaceae I. Nodal anatomy

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Proceedings / Indian Academy of Sciences

Abstract

The node in all the 32 species investigated is unilacunar one-trace. However, several nodes inMillingtonia hortensis also showed a bilacunar two-trace condition. The single trace may be massive and semi-circular, shaped like a broad arc or a horse-shoe but inMillingtonia hortensis, it is poorly developed. A somewhat trilobed trace has been observed inTecoma stans. The trace enters the base of the petiole as such or it divides into three immediately after leaving the vascular cylinder. The laterals may branch further before entering the petiole. The trends of specialization in nodal anatomy have also been discussed.

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Authors and Affiliations

  1. School of Plant Morphology, Meerut College, 250 001, Meerut

    D K Jain

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  1. D K Jain
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Additional information

Research contribution No. 166 from School of Plant Morphology, Meerut College, Meerut 250 001.

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Jain, D.K. Studies in Bignoniaceae I. Nodal anatomy. Proc. Indian Acad. Sci. 86, 375–380 (1977). https://doi.org/10.1007/BF03051365

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  • DOI: https://doi.org/10.1007/BF03051365

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