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 1–50 of 3,373.
- Abelia ×grandiflora (Rovelli ex André) Rehder [chinensis × uniflora] ABGR4glossy abelia · Caprifoliaceae
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Abelmoschus moschatus Medik. ABMOmusk okra · Malvaceae -
Abies alba Mill. ABAL3silver fir · Pinaceae -
Abietinella abietina (Hedw.) Fleisch. ABAB70abietinella moss · Thuidiaceae -
Abronia alpina Brandegee ABALRamshaw Meadows sand verbena · Nyctaginaceae -
Abronia ammophila Greene ABAM3Wyoming sand verbena · Nyctaginaceae - Abronia minor Standl. ABMI2little sand verbena · Nyctaginaceae
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Abutilon auritum (Wall. ex Link) Sweet ABAUAsian Indian mallow · Malvaceae -
Abutilon eremitopetalum Caum ABERhiddenpetal Indian mallow · Malvaceae -
Abutilon reventum S. Watson ABREyellowflower Indian mallow · Malvaceae -
Abutilon sandwicense (O. Deg.) Christoph. ABSA2greenflower Indian mallow · Malvaceae -
Abutilon thurberi A. Gray ABTH2Thurber's Indian mallow · Malvaceae -
Acacia cyclops A. Cunn. ex G. Don ACCY2coastal wattle · Fabaceae -
Acacia elata A. Cunn. ex Benth. ACELcedar wattle · Fabaceae -
Acacia parramattensis Tindale ACPA81South Wales wattle · Fabaceae -
Acacia saligna (Labill.) Wendl. f. ACSAorange wattle · Fabaceae -
Acaena pallida (Kirk) Allen ACPA14pale biddy-biddy · Rosaceae -
Acalypha mexicana Müll. Arg. ACME7Mexican copperleaf · Euphorbiaceae -
Acanthomintha duttonii (Abrams) Jokerst ACDU2San Mateo thorn-mint · Lamiaceae -
Acanthomintha ilicifolia (A. Gray) A. Gray ACILSan Diego thorn-mint · Lamiaceae -
Acanthus mollis L. ACMO8bear's breech · Acanthaceae -
Acaulon muticum (Hedw.) Müll. Hal. ACMU5acaulon moss · Pottiaceae -
Acer glabrum Torr. var. greenei Keller ACGLGGreene's maple · Aceraceae -
Achillea ageratum L. ACAG3sweet-Nancy · Asteraceae -
Achnatherum capense (Thunb.) P. Beauv. ACCA34Cape ricegrass · Poaceae -
Achnatherum clandestinum (Hack.) Barkworth ACCL7Mexican ricegrass · Poaceae -
Achyranthes splendens Mart. ex Moq. var. atollensis (H. St. John) Govaerts ACSPA2Amaranthaceae -
Achyranthes splendens Mart. ex Moq. var. splendens ACSPSMaui chaff flower · Amaranthaceae -
Acleisanthes acutifolia Standl. ACACneedletip trumpets · Nyctaginaceae - Acmella pilosa R.K. Jansen ACPI4hairy spotflower · Asteraceae
- Aconitum infectum Greene ACIN2Arizona monkshood · Ranunculaceae
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Acrachne racemosa (Roem. & Schult.) Ohwi ACRA6goosegrass · Poaceae -
Acrocomia totai Mart. ACTO5grugru palm · Arecaceae -
Actinidia chinensis Planch. ACCH5kiwi · Actinidiaceae -
Actinidia chinensis Planch. var. deliciosa (A. Chev.) A. Chev. ACCHDkiwi · Actinidiaceae -
Actinidia polygama (Siebold & Zucc.) Maxim. ACPO9silver vine · Actinidiaceae -
Adenostoma fasciculatum Hook. & Arn. var. obtusifolium S. Watson ADFAOchamise · Rosaceae -
Adiantum anceps Maxon & Morton ADAN2double edge maidenhair · Pteridaceae -
Adiantum caudatum L. ADCA3tailed maidenhair · Pteridaceae -
Adiantum hispidulum Sw. ADHIrough maidenhair · Pteridaceae -
Adiantum melanoleucum Willd. ADMEfragrant maidenhair · Pteridaceae -
Adiantum shastense Huiet & A.R. Sm. ADSHShasta maidenhair · Pteridaceae -
Adiantum trapeziforme L. ADTR4diamond maidenhair · Pteridaceae - Adiantum tricholepis Fée ADTRfuzzy maidenhair · Pteridaceae
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Adiantum villosum L. ADVIwoolly maidenhair · Pteridaceae -
Adiantum viridimontanum Paris ADVI3Green Mountain maidenhair · Pteridaceae -
Adolphia californica S. Watson ADCA2California prickbush · Rhamnaceae -
Adonis vernalis L. ADVEspring pheasant's eye · Ranunculaceae -
Aechmea fasciata (Lindl.) Baker AEFA3urnplant · Bromeliaceae -
Aegilops crassa Boiss. AECRPersian goatgrass · Poaceae