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Flowering plants : pokeweeds, four-o'clocks, carpetweeds, cacti, purslanes, goosefoots, pigweeds, and pinks / Robert H. Mohlenbrock ; illustrated by Paul W. Nelson ; maps by ...

Preface -- County map of Illinois -- Introduction -- Descriptions and illustrations -- Phytolaccaceae - Pokeweed family -- Nyctaginaceae - Four-o'clock family ...
Nature

Anatomy of the Primary Vascular System in Dicotyledonous Plants

A STRIKING feature of botany as the science XJL exists at prej ift is the lack of any coherent body of comp£"n?ive morphological doctrine dealing with bd aimKspernis. There are no books on the ...