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Madrean Archipelago
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| Name | † | Color on Map | EPA Code‡ |
| Apachian Valleys and Low Hills | ○ | 79a | |
| Lower Madrean Woodlands | ○ | 79b | |
| Madrean Pine-Oak and Mixed Conifer Forests | ○ | 79c | |
| Willcox Playa | ○ | 79d | |
| Madrean Basin Grasslands | ○ | 79e |
† Status: ✓ = Complete ○ = Needs Image … = Incomplete ∅ = Stub Only
‡ This code refers to the US EPA's Level 4 ecoregion codes for the continental U.S., see here.
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Plant Lists & In-Region Search
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Warning! This region extends outside the lower 48 US. We have only completed range maps for all plants in the lower 48 US; these lists and searches may thus have omissions for species which only occur in the portion of this region outside the lower 48 US.
