Index
- Wahlenbergia marginata, wahlenbergia
- Waltheria indica, waltheria
- Warea amplexifolia, clasping warea
- Warea carteri, Carter's mustard
- Wisteria frutescens, American wisteria
- Wisteria sinensis, Chinese wisteria
- Woodsia obtusa, blunt-leaved cliff fern
- Woodwardia areolata, netted chain fern
- Woodwardia virginica, Virginia chain fern
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