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Native Plant
Spiraea ×pyramidata
Non-native Plant
Spondias purpurea
Native Plant
Sporobolus purpurascens
Native Plant
Sphaeralcea psoraloides
Native Plant
Spermacoce prostrata
Native Plant
Sphaeralcea procera
Native Plant
Spiranthes praecox
Non-native Plant
Spiraea prunifolia
Native Plant
Spiranthes porrifolia
Native Plant
Sphaeralcea polychroma
Native Plant
Spirodela polyrrhiza
Non-native Plant
Spergularia platensis
Non-native Plant
Spathoglottis plicata
Native Plant
Sporobolus pinetorum
Non-native Plant
Sporobolus piliferus
Non-native Plant
Spergula pentandra
