Flora of North America : north of Mexico

Flora of North America, Volume 4, will be the second volume of nineteen on dicotyledons to be published in the Flora of North America series. It treats 892 species in 124 genera and ten families (Phytolaccaceae, Achatocarpaceae, Nyctaginaceae, Aizoaceae, Cactaceae, Chenopodiaceae, Amaranthaceae, Portulacaceae, Basellaceae, and Molluginaceae). Each of the included species is illustrated with a line drawing that, in combination with the key and descriptions, will facilitate identification of this economically important group of plants.