DR. JAKOB ERIKSSON describes in a lengthened paper the protomeristem of the roots of Dicotyledons, and directs attention to the four great types of structure observable in these roots. In the ...

THE long-expected translation of Dr. Hans Solereder's “Systematische Anatomie der Dicotyledon,” which has recently been issued by the Clarendon Press, is the latest addition to the splendid ...

American Journal of Botany, Vol. 3, No. 1 (Jan., 1916), pp. 24-39 (16 pages) There is a very clearly marked correlation between leaf-margin and environment in the distribution of Dicotyledons in the ...