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Range and rarity
Rare (≤ 5 counties)
A broader rarity slice: taxa known from five counties or fewer nationwide. Includes single-county endemics plus the next-most-restricted species.
- Matching taxa
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Showing 8,451–8,500 of 9,281.
- Spiranthes ×folsomii P.M. Brown [longilabris × odorata] SPFO5lady's tresses · Orchidaceae
- Spiranthes ×intermedia Ames [lacera × vernalis] SPIN6lady's tresses · Orchidaceae
- Spiranthes ×simpsonii Catling & Sheviak [lacera × romanzoffiana] SPSI6lady's tresses · Orchidaceae
- Spondias purpurea L. SPPUpurple mombin · Anacardiaceae
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Sporobolus buckleyi Vasey SPBUBuckley's dropseed · Poaceae -
Sporobolus creber De Nardi SPCR6slender dropseed · Poaceae -
Sporobolus diandrus (Retz.) P. Beauv. SPDI8tussock dropseed · Poaceae -
Sporobolus indicus (L.) R. Br. var. capensis Engelm. SPINC3rat-tail grass · Poaceae - Sporobolus interruptus Vasey SPIN5black dropseed · Poaceae
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Sporobolus tenuissimus (Mart. ex Schrank) Kuntze SPTE3tropical dropseed · Poaceae -
Stachys affinis Bunge STAF2artichoke betony · Lamiaceae -
Stachys bergii G. Mulligan & D. Munro STBE6Berg's hedgenettle · Lamiaceae - Stachys bigelovii A. Gray STBIrock hedgenettle · Lamiaceae
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Stachys byzantina K. Koch STBYwoolly hedgenettle · Lamiaceae -
Stachys officinalis (L.) Trevis. STOF2common hedgenettle · Lamiaceae -
Stachys recta L. STRE6stiff hedgenettle · Lamiaceae -
Stachys stebbinsii G. Mulligan & D. Munro STST17Stebbins' hedgenettle · Lamiaceae -
Stachys sylvatica L. STSY2whitespot · Lamiaceae -
Stachytarpheta australis Moldenke STAUbranched porterweed · Verbenaceae -
Stachytarpheta mutabilis (Jacq.) Vahl STMU2changeable velvetberry · Verbenaceae -
Stachytarpheta urticifolia Sims STURnettleleaf velvetberry · Verbenaceae -
Stanleya pinnata (Pursh) Britton var. inyoensis (Munz & Roos) Reveal STPII2Inyo princesplume · Brassicaceae -
Stanleya tomentosa Parry var. runcinata (Rydb.) Rollins STTORwoolly princesplume · Brassicaceae -
Stanleya tomentosa Parry var. tomentosa STTOTwoolly princesplume · Brassicaceae -
Stapelia gigantea N.E. Br. STGIZulu giant · Asclepiadaceae -
Stellaria americana (Porter ex B.L. Rob.) Standl. STAMAmerican chickweed · Caryophyllaceae - Stellaria ciliatosepala Trautv. STCI4Edwards' starwort · Caryophyllaceae
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Stellaria cuspidata Willd. ex Schltdl. STCUMexican starwort · Caryophyllaceae -
Stellaria irrigua Bunge STIRColorado starwort · Caryophyllaceae -
Stellaria littoralis Torr. STLIbeach starwort · Caryophyllaceae -
Stellaria longifolia Muhl. ex Willd. var. atrata J.W. Moore STLOA2longleaf starwort · Caryophyllaceae -
Stellaria palustris (Murray) Retz. STPA7meadow starwort · Caryophyllaceae -
Stellaria porsildii Chinnappa STPO8Porsild's starwort · Caryophyllaceae -
Stemodia schottii Holz. STSCRio Grande twintip · Scrophulariaceae - Stenaria butterwickiae (Terrell) Terrell STBU4Butterwick's starviolet · Rubiaceae
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Stenaria mullerae (Fosberg) Terrell STMU4Muller's diamond-flowers · Rubiaceae -
Stenaria mullerae (Fosberg) Terrell var. pooleana (B.L. Turner) Terrell STMUPPoole's starviolet · Rubiaceae -
Stenaria nigricans (Lam.) Terrell var. floridana (Standl.) Terrell STNIFFlorida diamondflowers · Rubiaceae -
Stenaria nigricans (Lam.) Terrell var. gypsophila (B.L. Turner) Terrell STNIGdiamond-flowers · Rubiaceae -
Stenaria rupicola (Greenm.) Terrell STRU9smallflower starviolet · Rubiaceae -
Stenocereus thurberi (Engelm.) Buxbaum STTH3organpipe cactus · Cactaceae -
Stenochlaena tenuifolia (Desv.) T. Moore STTE6giant vine fern · Blechnaceae -
Stenogyne angustifolia A. Gray STAN3narrowleaf stenogyne · Lamiaceae - Stenogyne bifida Hillebr. STBI3twocleft stenogyne · Lamiaceae
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Stenogyne calaminthoides A. Gray STCA9bog stenogyne · Lamiaceae -
Stenogyne calycosa Sherff STCA10Maui stenogyne · Lamiaceae -
Stenogyne campanulata Weller & Sakai STCA12Kalalau Valley stenogyne · Lamiaceae - Stenogyne cinerea Hillebr. STCI3Kula stenogyne · Lamiaceae
- Stenogyne cranwelliae Sherff STCR4Kohala Mountain stenogyne · Lamiaceae
- Stenogyne haliakalae Wawra STHA2Haleakala stenogyne · Lamiaceae