Map Color Key:
| STATE COLOR KEY | COUNTY COLOR KEY | |||
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Species present in state and native
| Species present and not rare | Species extinct | Species native, but adventive in state | Species waif |
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Species present in state and exotic | Species present and rare
| Species noxious (includes noxious-weed seeds) | Species eradicated | |
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| Species not present in state | Species extirpated (historic) | Species exotic and present | Questionable Presence (cross-hatched) | |
In some cases, individual species maps will have multiple colors regarding nativity [e.g., Chenopodium album, dark olive green (native), orange (native historic), teal (adventive), and also dark navy blue (exotic)]. This map suggests that in various U.S. states, at least one infraspecific taxon of the species complex is native, another is exotic, a third is adventive and the fourth rare. Once published, the Floristic Synthesis will show state-level nativity and rarity for each infraspecific taxon, however, for this website, we have provided only full species-level maps.
Last updated February 18, 2011.
