Abstract
Whilst the specimens ofBothrodendron mundumWilliamson sp. in the Kidston Collection of fossil plant slides in the Glasgow University Botany Department were being examined, certain structural characters were observed which have not been mentioned in previous descriptions of this species. These characters appear to be of sufficient importance to justify the present description, and at the same time it may be noted that photographic illustrations of the aerial stem of this species have not, so far as is known, been previously published.

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