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 601–650 of 3,365.
- Ceanothus ×otayensis McMinn [crassifolus × greggii] CEOTceanothus · Rhamnaceae
- Ceanothus ×serrulatus McMinn (pro sp.) [cordulatus × prostratus] CESECascade Lake ceanothus · Rhamnaceae
- Ceanothus ×veitchianus Hook. (pro sp.) [cuneatus × griseus] CEVE4ceanothus · Rhamnaceae
- Cedronella canariensis (L.) Willd. ex Webb & Bethel. CECAherb of Gilead · Lamiaceae
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Celastrus paniculatus Willd. CEPA7Oriental bittersweet · Celastraceae -
Celosia palmeri S. Watson CEPA5Palmer's cock's comb · Amaranthaceae -
Cenchrus agrimonioides Trin. var. laysanensis F. Br. CEAGLkamanomano · Poaceae -
Cenchrus biflorus Roxb. CEBIIndian sandbur · Poaceae -
Cenchrus palmeri Vasey CEPA22giant sandbur · Poaceae - Centaurea babylonica (L.) L. CEBA4Syrian knapweed · Asteraceae
- Centaurea calcitrapoides L. CECA5smallhead star-thistle · Asteraceae
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Centaurea paniculata L. CEPA14Jersey knapweed · Asteraceae -
Centaurea trichocephala M. Bieb. ex Willd. CETR12feather-head knapweed · Asteraceae - Centaurea ×pouzinii DC. [aspera × calcitrapa] CEPO8knapweed · Asteraceae
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Centrosema sagittatum (Humb. & Bonpl. ex Willd.) Brandegee ex Riley CESA6arrowleaf butterfly pea · Fabaceae -
Cephalaria gigantea (Ledeb.) Bobr. CEGI2Tatarian cephalaria · Dipsacaceae - Cerastium gorodkovianum Schischkin CEGOtundra chickweed · Caryophyllaceae
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Cerastium gracile Dufour CEGR7slender chickweed · Caryophyllaceae -
Ceratostigma plumbaginoides Bunge CEPL2blue leadwood · Plumbaginaceae - Cercocarpus traskiae Eastw. CETR4Catalina Island mountain mahogany · Rosaceae
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Cereus hildmannianus K. Schum. CEHI3hedge cactus · Cactaceae - Cestrum fasciculatum (Schltdl.) Miers CEFA3early jessamine · Solanaceae
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Chaerophyllum bulbosum L. CHBU5turnip-root chervil · Apiaceae - Chaetopappa parryi A. Gray CHPA2Parry's leastdaisy · Asteraceae
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Chamaechaenactis scaposa (Eastw.) Rydb. var. parva Preece & Turner CHSCPfullstem · Asteraceae -
Chamaecrista fasciculata (Michx.) Greene var. macrosperma (Fernald) C.F. Reed CHFAM2partridge pea · Fabaceae -
Chamaecrista serpens (L.) Greene var. wrightii (A. Gray) Irwin & Barneby CHSEWWright's sensitive pea · Fabaceae -
Chamaecyparis pisifera Siebold & Zucc. CHPI12sawara-cypress · Cupressaceae -
Chamaedorea seifrizii Burret CHSE17Seifriz's chamaedorea · Arecaceae -
Chamaesyce arnottiana (Endl.) O. Deg. & I. Deg. CHAR17'akoko · Euphorbiaceae -
Chamaesyce astyla (Engelm. ex Boiss.) Millsp. CHAS2alkali sandmat · Euphorbiaceae -
Chamaesyce atrococca (A. Heller) Croizat & O. Deg. CHAT2koko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. celastroides CHCEC'ekoko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. hanapepensis (Sherff) O. Deg. & I. Deg. CHCEH'ekoko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. kaenana (Sherff) O. Deg. & I. Deg. CHCEK'ekoko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. laehiensis (O. Deg., I. Deg. & Sherff) Koutnik CHCEL'ekoko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. lorifolia (A. Gray) O. Deg. & I. Deg. CHCEL2'ekoko · Euphorbiaceae -
Chamaesyce celastroides (Boiss.) Croizat & O. Deg. var. tomentella (Boiss.) Koutnik CHCET'ekoko · Euphorbiaceae -
Chamaesyce chaetocalyx (Boiss.) Wooton & Standl. var. triligulata (L.C. Wheeler) Mayfield CHCHTbristlecup sandmat · Euphorbiaceae - Chamaesyce clusiifolia (Hook. & Arn.) Arthur CHCL3forest sandmat · Euphorbiaceae
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Chamaesyce deltoidea (Engelm. ex Chapm.) Small ssp. adhaerens (Small) Herndon CHDEA2wedge sandmat · Euphorbiaceae -
Chamaesyce deltoidea (Engelm. ex Chapm.) Small ssp. deltoidea CHDEDwedge sandmat · Euphorbiaceae -
Chamaesyce deltoidea (Engelm. ex Chapm.) Small ssp. pinetorum (Small) Herndon CHDEPwedge sandmat · Euphorbiaceae -
Chamaesyce deltoidea (Engelm. ex Chapm.) Small ssp. serpyllum (Small) Burch CHDESwedge sandmat · Euphorbiaceae -
Chamaesyce deppeana (Boiss.) Millsp. CHDE8Oahu sandmat · Euphorbiaceae -
Chamaesyce halemanui (Sherff) Croizat & O. Deg. CHHA2Kauai sandmat · Euphorbiaceae -
Chamaesyce herbstii W.L. Wagner CHHE3Herbst's sandmat · Euphorbiaceae -
Chamaesyce kuwaleana (O. Deg. & Sherff) O. Deg. & I. Deg. CHKUkokomalei · Euphorbiaceae - Chamaesyce perennans Shinners CHPE10perennial sandmat · Euphorbiaceae
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Chamaesyce remyi (A. Gray ex Boiss.) Croizat & O. Deg. CHRE3Remy's sandmat · Euphorbiaceae