Resources
for Botanizing in the Washington, D.C., Region
Kinds of
living plants in the Region
(11
taxonomic divisions = phyla)
Chlorophyta (Green Algae, including
Charophytes)
Bryophyta (Liverworts, Mosses)
Lycophyta (Clubmosses)
Sphenophyta (Horsetails)
Pterophyta (Ferns)
Psilophyta (Whiskferns)
Gnetophyta (Gnetophytes) (USBG, etc.)
Gingkophyta (Gingkos)
Cycadophyta (Cycads) (USBG, etc.)
Coniferophyta (Conifers)
Anthophyta (Flowering Plants)
(Extinct divisions (Smithsonian,
fossils))