内容简介：
This volume (and accompanying CD) provides general information on the genus Trifolium and its more than 200 species. Also included is botanical information - description of stipules, leaflets, leaves heads, flowers, and pods. Users will find one of the most useful aspects of the CD to be the inclusion of full-colour, high-resolution plant and seed images. All information is completely searchable through indexes (print) and keyboard searches (CD).