Volume 4 of the critically acclaimed Flora of North America series is one of 19 volumes on dicots to be published in this collection. Together they will provide a comprehensive, authoritative, illustrated account of this important group of plants. Most of the species treated are either native to North America north of Mexico or are introduced species that are now established in the region. It also includes many important species that do not fit into these categories.

To be published in 30 volumes, Flora of North America represents the first and only comprehensive taxonomic guide to the extraordinary diversity of plant life blanketing our continent north of Mexico. The collaborative effort of more than 30 major U.S. and Canadian botanical institutions, this ground-breaking scholarly series revises and synthesizes literally thousands of floristic monographs and regional floras published over the last three centuries.
In addition, this series distills the original herbarium, laboratory, and field work of hundreds of contributors -- all of them leading...

To be published in 30 volumes, Flora of North America represents the first and only comprehensive taxonomic guide to the extraordinary diversity of plant life blanketing our continent north of Mexico. The collaborative effort of more than 30 major U.S. and Canadian botanical institutions, this ground-breaking scholarly series revises and synthesizes literally thousands of floristic monographs and regional floras published over the last three centuries.
In addition, this series distills the original herbarium, laboratory, and field work of hundreds of contributors -- all of them leading...

Flora of North America Volume 7 will be the eighth of 19 volumes on dicotyledons to be published in the Flora of North America North of Mexico series. It treats 923 species classified among 125 genera in 11 families; the larger families covered in Volume 7 include Brassicaceae (Mustard family), Cleomaceae (Spiderflower family), and Salicaceae (Willow family). The endemic family Limnanthaceae with eight species classified in two genera (Floerkea and Limnanthes) is also included in the volume.

Each genus has representative species illustrated with a line...