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Flower color
Blue
Species with blue flowers per USDA.
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Showing 51–68 of 68.
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Penstemon speciosus Douglas ex Lindl. PESProyal penstemon · Scrophulariaceae -
Phacelia tanacetifolia Benth. PHTAlacy phacelia · Hydrophyllaceae -
Polemonium acutiflorum Willd. ex Roem. & Schult. POACtall Jacob's-ladder · Polemoniaceae -
Pontederia cordata L. POCO14pickerelweed · Pontederiaceae -
Populus tremuloides Michx. POTR5quaking aspen · Salicaceae -
Rosmarinus officinalis L. ROOFrosemary · Lamiaceae -
Salvia dorrii (Kellogg) Abrams SADO4purple sage · Lamiaceae -
Schoenoplectus pungens (Vahl) Palla var. pungens SCPUP5common threesquare · Cyperaceae -
Sisyrinchium angustifolium Mill. SIAN3narrowleaf blue-eyed grass · Iridaceae -
Sisyrinchium idahoense E.P. Bicknell SIIDIdaho blue-eyed grass · Iridaceae -
Symphyotrichum prenanthoides (Muhl. ex Willd.) G.L. Nesom SYPR6crookedstem aster · Asteraceae -
Symphyotrichum puniceum (L.) Á. Löve & D. Löve var. puniceum SYPUPpurplestem aster · Asteraceae -
Symphyotrichum subulatum (Michx.) G.L. Nesom SYSU5eastern annual saltmarsh aster · Asteraceae -
Tradescantia virginiana L. TRVIVirginia spiderwort · Commelinaceae -
Triteleia grandiflora Lindl. TRGR7largeflower triteleia · Liliaceae -
Veronica americana Schwein. ex Benth. VEAM2American speedwell · Scrophulariaceae -
Veronica wormskjoldii Roem. & Schult. VEWO2American alpine speedwell · Scrophulariaceae -
Vinca minor L. VIMI2common periwinkle · Apocynaceae