Explore / Range and rarity / Single-county taxa
Range and rarity
Single-county taxa
Taxa documented in only a single county across the entire catalogue. Mostly local endemics, sub-rank curiosities, and rarely-collected outliers — the eccentric edge of the flora.
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Showing 2,801–2,850 of 3,373.
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Rubus leucodermis Douglas ex Torr. & A. Gray var. trinitatis A. Berger RULETwhitebark raspberry · Rosaceae - Rubus multiformis Blanch. RUMU3variable blackberry · Rosaceae
- Rubus notatus L.H. Bailey RUNO2bristle berry · Rosaceae
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Rubus originalis L.H. Bailey RUOR4Cold Spring blackberry · Rosaceae - Rubus particularis L.H. Bailey RUPA14West Virginia dewberry · Rosaceae
- Rubus pervarius (L.H. Bailey) L.H. Bailey RUPE10Westminster dewberry · Rosaceae
- Rubus provincialis L.H. Bailey RUPR9groundberry · Rosaceae
- Rubus racemiger L.H. Bailey RURAracemed dewberry · Rosaceae
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Rubus riograndis L.H. Bailey RURIRio Grande dewberry · Rosaceae - Rubus rydbergianus L.H. Bailey RURYRydberg's blackberry · Rosaceae
- Rubus scambens L.H. Bailey RUSCspringtime dewberry · Rosaceae
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Rubus sieboldii Blume RUSI4palmleaf dewberry · Rosaceae -
Rubus tomentosus Borkh. RUTO2woolly blackberry · Rosaceae -
Rubus tomentosus Borkh. var. canescens Wirtg. RUTOCwoolly blackberry · Rosaceae -
Rubus tygartensis H.A. Davis & T. Davis RUTYTaylor County blackberry · Rosaceae - Rubus vagus L.H. Bailey RUVArambling dewberry · Rosaceae
- Rubus variispinus L.H. Bailey RUVA3Vicksburg blackberry · Rosaceae
- Rubus vigilis L.H. Bailey RUVI11Missouri blackberry · Rosaceae
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Rudbeckia hirta L. var. angustifolia (T.V. Moore) Perdue RUHIAblackeyed Susan · Asteraceae -
Rudbeckia laciniata L. var. bipinnata Perdue RULABcutleaf coneflower · Asteraceae -
Rudbeckia laciniata L. var. heterophylla (Torr. & A. Gray) Fernald & B.G. Schub. RULAH3cutleaf coneflower · Asteraceae -
Ruellia ciliatiflora Hook. RUCI3hairyflower wild petunia · Acanthaceae -
Ruellia davisiorum Tharp & F.A. Barkley RUDARio Grande wild petunia · Acanthaceae -
Ruellia prostrata Poir. RUPR18prostrate wild petunia · Acanthaceae -
Rumex acetosa L. ssp. thyrsiflorus (Fingerh.) Hayek RUACTgarden sorrel · Polygonaceae - Rumex hesperius Greene RUHE7western willow dock · Polygonaceae
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Rumex salicifolius Weinm. var. angustivalvis Danser RUSAAwillow dock · Polygonaceae -
Rumex skottsbergii O. Deg. & I. Deg. RUSKlava dock · Polygonaceae - Rumex tomentellus Rech. f. RUTOWillow Creek dock · Polygonaceae
- Sabal bermudana L.H. Bailey SABEBermuda palm · Arecaceae
- Sabal ×brazoriensis D.H. Goldman, Lockett, & Read [minor × palmetto] SABR4Brazoria palmetto · Arecaceae
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Saccharum spontaneum L. SASPwild sugarcane · Poaceae -
Sadleria wagneriana D.D. Palmer & T. Flynn SAWA3Wagner's Plume Fern · Blechnaceae -
Sagina nodosa (L.) Fenzl ssp. nodosa SANONknotted pearlwort · Caryophyllaceae -
Sagina subulata (Sw.) C. Presl SASU5awl-leaf pearlwort · Caryophyllaceae -
Sagittaria demersa J.G. Sm. SADE11Chihuahuan arrowhead · Alismataceae -
Sagittaria fasciculata E.O. Beal SAFA5bunched arrowhead · Alismataceae -
Sairocarpus watsonii (Vasey & Rose) D.A. Sutton SAWA2Watson's snapdragon · Scrophulariaceae -
Salix nummularia Andersson SANU4barren ground willow · Salicaceae -
Salix ovalifolia Trautv. var. glacialis (Andersson) Argus SAOVGglacial willow · Salicaceae -
Salix tracyi C.R. Ball SATRTracy's willow · Salicaceae - Salix ×rubella Bebb [candida × eriocephala] SARU2hybrid willow · Salicaceae
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Salvia argentea L. SAAR25silver sage · Lamiaceae -
Salvia brandegeei Munz SABR3Santa Rosa Island sage · Lamiaceae -
Salvia dorrii (Kellogg) Abrams ssp. dorrii var. clokeyi Strachan SADOC5purple sage · Lamiaceae -
Salvia hispanica L. SAHI6chia · Lamiaceae -
Salvia longistyla Benth. SALO6Mexican sage · Lamiaceae -
Salvia munzii Epling SAMUMunz's sage · Lamiaceae -
Salvia nutans L. SANU5nodding sage · Lamiaceae -
Salvia regla Cav. SARE4mountain sage · Lamiaceae