Leaves, Stem and Wood in relation to Taxonomy, with Notes on Economic Uses. By Dr. C. R. Metcalfe and Dr. L. Chalk. Vol. 1. Pp. lxiv + 724. Vol. 2. Pp. v + 725–1500 ...

In the summer of 1973 sunflowers appeared in my father's vegetable garden. They seemed to sprout overnight in a few rows he had lent that year to new neighbors from California. Only six years old at ...

Pyrenees fossils suggest the Montsechia lived up to 130 million years ago and is the earliest known example of a fully submerged aquatic flowering plant Editor's note: The following essay is reprinted ...