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166 SHORT NOTES<br />
large. With each plant sampled, the length and the greatest breadth of the terminal leaflet were<br />
measured; a leaflet index was then computed as the ratio of the former to the latter.<br />
Table 1 shows the extent of inter-population variation in the leaf indices of the localities sampled.<br />
The data suggest that in the British Isles Ononis rep ens colonies show a continuous variation in their<br />
terminal leaflet indices. However, when some of these colonies are compared, they show significant<br />
differences in their terminal leaflet length, width, and index (i.e. leaflet shape). It also appears that<br />
most coastal colonies have lower leaf indices, and therefore broader terminal leaflets, than the inland<br />
colonies.<br />
ACKNOWLEDGMENTS<br />
This is part of postgraduate work in Biostatistics undertaken at the University of Waterloo, Ontario,<br />
Canada; the author wishes to thank Professor 1. K. Morton for providing the original data with which<br />
the investigation was done.<br />
C. E. STEPHENS<br />
(Department of Botany, University of Cape Coast, Cape Coast, Ghana)