Letter | Published:

‘Spiral’ Roots in Agar Cultures of Marsilea

Naturevolume 169pages10191020 (1952) | Download Citation



THE general conditions for the preparation and growth of sterile cultures of the heterosporous fern Marsilea have already been described1–3. It was shown3 that, with glucose as carbon source, much better growth was obtained in liquid than on agar media. During further work on this subject an unusual phenomenon was observed in the root system of the agar cultures.

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  1. 1

    Allsopp, A., Nature, 168, 301 (1951).

  2. 2

    Allsopp, A., Nature, 169, 79 (1952).

  3. 3

    Allsopp, A., Ann. Bot., N.S., 16, 165 (1952).

  4. 4

    Darwin, Charles, “The Power of Movement in Plants” (London, 1880).

  5. 5

    Stiles, W., “An Introduction to the Principles of Plant Physiology” 2nd edit., 505 (1950).

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  1. Department of Cryptogamic Botany, University of Manchester

    • A. ALLSOPP


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