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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
- 9,281
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- max_counties=5
Showing 4,351–4,400 of 9,281.
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Heliconia stricta Huber HEST11Dwarf Jamaican Heliconia · Heliconiaceae -
Helietta parvifolia (A. Gray ex Hemsl.) Benth. HEPA3barreta · Rutaceae -
Heliocarpus popayanensis Kunth HEPO4white moho · Tiliaceae -
Heliomeris multiflora Nutt. var. macrocephala Heiser HEMUM2showy goldeneye · Asteraceae -
Heliomeris soliceps (Barneby) Yates HESO2tropical false goldeneye · Asteraceae -
Heliopsis parvifolia A. Gray HEPA4mountain oxeye · Asteraceae -
Heliotropium anomalum Hook. & Arn. HEAN8Polynesian heliotrope · Boraginaceae - Heliotropium anomalum Hook. & Arn. var. argenteum A. Gray HEANAPolynesian heliotrope · Boraginaceae
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Heliotropium arborescens L. HEAR16garden heliotrope · Boraginaceae -
Heliotropium convolvulaceum (Nutt.) A. Gray var. californicum (Greene) I.M. Johnst. HECOCphlox heliotrope · Boraginaceae -
Heliotropium foertherianum Diane & Hilger HEFO11velvetleaf soldierbush · Boraginaceae -
Heliotropium molle (Torr.) I.M. Johnst. HEMO4soft heliotrope · Boraginaceae -
Heliotropium pringlei B.L. Rob. HEPR9Pringle's heliotrope · Boraginaceae -
Heliotropium procumbens Mill. var. depressum (Cham.) Fosberg HEPRDfourspike heliotrope · Boraginaceae -
Heliotropium ramosissimum (Lehm.) DC. HERA7wavy heliotrope · Boraginaceae -
Heliotropium supinum L. HESU6dwarf heliotrope · Boraginaceae -
Helleborus foetidus L. HEFO8setterwort · Ranunculaceae -
Helleborus niger L. HENI6black hellebore · Ranunculaceae -
Helleborus orientalis Lam. HEOR3lenten-rose · Ranunculaceae -
Hemerocallis minor Mill. HEMI17small daylily · Liliaceae -
Hemigraphis alternata (Burm. f.) T. Anderson HEAL12redivy · Acanthaceae -
Hemigraphis reptans (G. Forst.) T. Anderson ex Hemsl. HERE6redflame · Acanthaceae -
Hemizonia congesta DC. ssp. calyculata Babc. & H.M. Hall HECOC5hayfield tarweed · Asteraceae - Hemizonia congesta DC. ssp. leucocephala (Tanowitz) Keil HECOL2hayfield tarweed · Asteraceae
- Hemizonia congesta DC. ssp. tracyi Babc. & H.M. Hall HECOThayfield tarweed · Asteraceae
- Hemizonia congesta DC. ssp. vernalis (D.D. Keck) Tanowitz HECOVhayfield tarweed · Asteraceae
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Hemizonia floribunda A. Gray HEFL4Tecate tarweed · Asteraceae -
Hemizonia paniculata A. Gray HEPA6San Diego tarweed · Asteraceae -
Henrya insularis Nees ex Benth. HEIN3island renegade · Acanthaceae -
Hermannia pauciflora S. Watson HEPA13Santa Catalina burstwort · Sterculiaceae -
Hesperaloe funifera (Lem.) Trel. HEFU2New Mexico false yucca · Agavaceae -
Hesperaloe parviflora (Torr.) J.M. Coult. HEPA8redflower false yucca · Agavaceae - Hesperaloe parviflora (Torr.) J.M. Coult. var. engelmannii (Krauskopf) Trel. HEPAEEngelmann's false yucca · Agavaceae
- Hesperaloe parviflora (Torr.) J.M. Coult. var. parviflora HEPAPredflower false yucca · Agavaceae
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Hesperocnide sandwicensis (Weddell) Weddell HESA5Hawai'i stingingnettle · Urticaceae -
Hesperocyparis abramsiana (C.B. Wolf) Bartel HEAB2Santa Cruz cypress · Cupressaceae - Hesperocyparis abramsiana (C.B. Wolf) Bartel var. abramsiana HEABASanta Cruz cypress · Cupressaceae
- Hesperocyparis abramsiana (C.B. Wolf) Bartel var. butanoensis (Silba) Bartel & R.P. Adams HEABBSanta Cruz cypress · Cupressaceae
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Hesperocyparis forbesii (Jeps.) Bartel HEFO10tecate cypress · Cupressaceae -
Hesperocyparis glabra (Sudw.) Bartel HEGL4smooth Arizona cypress · Cupressaceae -
Hesperocyparis goveniana (Gordon) Bartel HEGO3Gowen cypress · Cupressaceae -
Hesperocyparis macrocarpa (Hartw.) Bartel HEMA22Monterey cypress · Cupressaceae -
Hesperocyparis nevadensis (Abrams) Bartel HENE2Paiute cypress · Cupressaceae - Hesperocyparis pigmaea (Lemmon) Bartel HEPI11pygmy cypress · Cupressaceae
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Hesperocyparis stephensonii (C.B. Wolf) Bartel HEST10Cuyamaca cypress · Cupressaceae - Hesperodoria salicina (S.F. Blake) G.L. Nesom HESA13willow glowweed · Asteraceae
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Hesperolinon adenophyllum (A. Gray) Small HEADglandular dwarf-flax · Linaceae -
Hesperolinon bicarpellatum (H. Sharsm.) H. Sharsm. HEBI3twocarpel dwarf-flax · Linaceae -
Hesperolinon breweri (A. Gray) Small HEBR4Brewer's dwarf-flax · Linaceae -
Hesperolinon congestum (A. Gray) Small HECO12Marin dwarf-flax · Linaceae