- All About Trifolium Kingii S. Wats. Var. Macilentum (Greene) Isely
- All About Trifolium Macilentum Greene
- All About King's Clover (Trifolium Kingii S. Wats.)
- All About Burdock Clover
- All About Alsike Clover
- All About Trifolium Elegans Savi
- All About Trifolium Hybridum L. Ssp. Elegans (Savi) Aschers. & Graebn.
- All About Trifolium Hybridum L. Var. Elegans (Savi) Boiss.
- All About Trifolium Hybridum L. Var. Pratense Rabenh.
- All About Crimson Clover
- All About Trifolium Incarnatum L. Var. Elatius Gibelli & Belli
- All About Trifolium Gymnocarpon Nutt. Var. Plummerae (S. Wats.) J.S. Martin
- All About Trifolium Plummerae S. Wats.
- All About Hollyleaf Clover (Trifolium Gymnocarpon Nutt.)
- All About Hayden's Clover
- All About Trifolium Haydenii Porter Var. Haydenii Porter [superfluous Autonym]
- All About Rose Clover
- All About Canyon Clover
- All About Trifolium Palmeri S. Wats.
- All About Pinpoint Clover (Trifolium Gracilentum Torr. & Gray)
- All About Hollyleaf Clover
- All About Trifolium Gymnocarpon Nutt. Var. Subcaulescens (Gray) A. Nels.
- All About Trifolium Nemorale Greene
- All About Trifolium Subcaulescens Gray
- All About Plummer's Clover
- All About Trifolium Fucatum Lindl. Var. Gambelii (Nutt.) Jepson
- All About Trifolium Fucatum Lindl. Var. Virescens (Greene) Jepson
- All About Trifolium Gambelii Nutt.
- All About Spanish Clover
- All About Clustered Clover
- All About Pinpoint Clover
- All About Trifolium Gracilentum Torr. & Gray Var. Inconspicuum Fern.
- All About Palmer's Clover
- All About Martin's Clover
- All About Woollyhead Clover (Trifolium Eriocephalum Nutt.)
- All About Trifolium Eriocephalum Nutt. Var. Eriocephalum Nutt. [superfluous Autonym]
- All About Strawberry Clover
- All About Trifolium Fragiferum L. Ssp. Bonannii (K. Presl) Soják
- All About Bull Clover
- All About Trifolium Flavulum Greene
- All About Trifolium Arcuatum Piper
- All About Trifolium Eriocephalum Nutt. Var. Piperi J.S. Martin
- All About Cusick's Clover
- All About Trifolium Eriocephalum Nutt. Var. Cusickii (Piper) J.S. Martin
- All About Trifolium Eriocephalum Nutt. Var. Harneyense (T.J. Howell) McDermott
- All About Woollyhead Clover (Trifolium Eriocephalum Nutt. Ssp. Eriocephalum)
- All About Trifolium Eriocephalum Nutt. Var. Butleri Jepson
- All About Branched Indian Clover
- All About Trifolium Albopurpureum Torr. & Gray Var. Dichotomum (Hook. & Arn.) Isely
- All About Trifolium Dichotomum Hook. & Arn. Var. Turbinatum Jepson
- All About Trifolium Macraei Hook. & Arn. Var. Dichotomum (Hook. & Arn.) Brewer Ex S. Wats.
- All About Douglas' Clover
- All About Suckling Clover
- All About Woollyhead Clover
- All About Trifolium Amplectens Torr. & Gray Var. Hydrophilum (Greene) Jepson
- All About Trifolium Depauperatum Desv. Var. Hydrophilum (Greene) J.S. Martin Ex Isely
- All About Balloon Sack Clover (Trifolium Depauperatum Desv. Var. Stenophyllum (Nutt.) McDermott)
- All About Trifolium Amplectens Torr. & Gray Var. Truncatum (Greene) Jepson
- All About Trifolium Depauperatum Desv. Var. Truncatum (Greene) McDermott Ex Isely
- All About Trifolium Stenophyllum Nutt.
- All About Trifolium Truncatum (Greene) Greene
- All About Cowbag Clover (Trifolium Depauperatum Desv.)
- All About Trifolium Kingii S. Wats. Ssp. Dedeckerae (J. Gillett) D. Heller
- All About Trifolium Macilentum Greene Var. Dedeckerae (J. Gillett) Barneby
- All About Balloon Sack Clover
- All About Trifolium Amplectens Torr. & Gray
- All About Cowbag Clover
- All About Trifolium Depauperatum Desv. Var. Laciniatum (Greene) Jepson
- All About Balloon Sack Clover (Trifolium Depauperatum Desv. Var. Diversifolium (Nutt.) McDermott)
- All About Alpine Clover (Trifolium Dasyphyllum Torr. & Gray Ssp. Dasyphyllum)
- All About Trifolium Lividum Rydb.
- All About Uinta Clover
- All About Trifolium Dasyphyllum Torr. & Gray Var. Uintense (Rydb.) Welsh
- All About Trifolium Dasyphyllum Torr. & Gray Var. Uintense (Rydb.) J.S. Martin Ex Isely
- All About Trifolium Uintense Rydb.
- All About Alpine Clover (Trifolium Dasyphyllum Torr. & Gray)
- All About Dedecker's Clover
- All About Field Clover
- All About Trifolium Procumbens L. 1755, Non 1753
- All About Carolina Clover
- All About Trifolium Saxicola Small
- All About Nodding Clover
- All About Foothill Clover
- All About Cup Clover
- All About Trifolium Bifidum Gray Var. Bifidum Gray [superfluous Autonym]
- All About Trifolium Bifidum Gray Var. Decipiens Greene
- All About Parasol Clover
- All About Brandegee's Clover
- All About Trifolium Kingii S. Wats. Var. Brandegeei (S. Wats.) McDermott
- All About Forest Clover
- All About Santa Cruz Clover
- All About Trifolium Agrarium L. P.p.
- All About Andrews' Clover
- All About Trifolium Grayi Loja.
- All About Bearded Clover
- All About Bearded Clover (Trifolium Barbigerum Torr.)
- All About Beckwith's Clover
- All About Bejar Clover
- All About Notchleaf Clover
- All About Rocky Mountain Clover
- All About Trifolium Bracteolatum Rydb.
- All About Trifolium Dasyphyllum Torr. & Gray Var. Stenolobum (Rydb.) McDermott
- All About Trifolium Lilacinum Rydb., Non Greene
- All About Trifolium Petraeum Greene
- All About Trifolium Stenolobum Rydb.
- All About Golden Clover
- All About Trifolium Monoense Greene
- All About Fiveleaf Clover (Trifolium Andersonii Gray)
- All About Trifolium Andersonii Gray Var. Andersonii Gray [superfluous Autonym]
- All About Intermountain Clover
- All About Intermountain Clover (Trifolium Andinum Nutt.)
- All About Narrowleaf Crimson Clover
- All About Rabbitfoot Clover (Trifolium Arvense L.)
- All About Aztec Clover
- All About Showy Indian Clover
- All About Fiveleaf Clover
- All About Beatley's Clover
- All About Trifolium Andersonii Gray Var. Beatleyae (J. Gillett) Isely
- All About Mono Clover
- All About Trifolium Andersonii Gray Var. Monoense (Greene) Isely
- All About Trifolium Helleri Kennedy
- All About Trifolium Macraei Hook. & Arn. Var. Albopurpureum (Torr. & Gray) Greene
- All About Trifolium Neolagopus Loja.
- All About Trifolium Olivaceum Greene Var. Columbianum (Greene) Jepson
- All About Trifolium Olivaceum Greene Var. Griseum Jepson
- All About Trifolium Petrophilum Greene Ex Heller
- All About Egyptian Clover
- All About Trientalis Europaea L. Var. Arctica (Fisch. Ex Hook.) Ledeb.
- All About Arctic Starflower (Trientalis Europaea L.)
- All About Clover
- All About Rancheria Clover
- All About Trifolium Albopurpureum Torr. & Gray Var. Albopurpureum Torr. & Gray [superfluous Autonym]
- All About Trifolium Albopurpureum Torr. & Gray Var. Neolagopus (Loja.) McDermott
- All About Trifolium Columbianum Greene
- All About Trifolium Columbianum Greene Var. Argillorum Jepson
- All About Trientalis Americana Pursh
- All About Broadleaf Starflower
- All About Trientalis Europaea L. Var. Latifolia (Hook.) Torr.
- All About Trientalis Latifolia Hook.
- All About Starflower (Trientalis Borealis Raf.)
- All About Arctic Starflower
- All About Trientalis Arctica Fisch. Ex Hook.
- All About Slim Tridens (Tridens Muticus (Torr.) Nash Var. Muticus)
- All About Triodia Mutica (Torr.) Scribn.
- All About Slim Tridens (Tridens Muticus (Torr.) Nash)
- All About Longspike Tridens
- All About Triodia Stricta (Nutt.) Benth. Ex Vasey
- All About Starflower
- All About Starflower (Trientalis Borealis Raf. Ssp. Borealis)
- All About Purpletop Tridens
- All About Triodia Flava (L.) Smyth
- All About Purpletop Tridens (Tridens Flavus (L.) A.S. Hitchc.)
- All About Slim Tridens
- All About Tridens Elongatus (Buckl.) Nash
- All About Tridens ×oklahomensis (Featherly) Featherly (pro Sp.) [not Hybrid]
- All About Tridens Oklahomensis (Featherly) Featherly
- All About Triodia Elongata (Buckl.) Scribn.
- All About Triodia Drummondii Scribn. & Kearney
- All About Lovegrass Tridens
- All About Triodia Eragrostoides Vasey & Scribn.
- All About Chapman's Tridens
- All About Tridens Chapmanii (Small) Chase
- All About Triodia Chapmanii (Small) Bush
- All About Tridax
- All About Coatbuttons
- All About Tridens
- All About White Tridens
- All About Rhombolytrum Albescens (Vasey) Nash
- All About Pine Barren Fluffgrass
- All About Triodia Elliottii Bush
- All About Carolina Fluffgrass
- All About Trichostema Dichotomum L. Var. Lineare (Walt.) Pursh
- All About Trichostema Lineare Walt.
- All About Siskiyou Bluecurls
- All About Florida Scrub Bluecurls
- All About Alpine Clubrush
- All About Hoopvine
- All About Rivina Octandra L.
- All About Smallflower Bluecurls
- All About Oblong Bluecurls
- All About San Joaquin Bluecurls
- All About Parish's Bluecurls
- All About Hernandez's Bluecurls
- All About Trichostema Laxum Gray Var. Rubisepalum (Elmer) Jepson
- All About Narrowleaf Bluecurls
- All About Tetraclea Viscida Lundell
- All About Forked Bluecurls
- All About Trichostema Dichotomum L. Var. Puberulum Fern. & Grisc.
- All About Trichostema Pilosum Roth
- All About Woolly Bluecurls
- All About Vinegarweed
- All About Turpentine Weed
- All About Bluecurls
- All About Arizona Bluecurls
- All About San Jacinto Bluecurls
- All About San Jacinto Bluecurls (Trichostema Austromontanum F.H. Lewis Ssp. Compactum F.H. Lewis)
- All About San Jacinto Bluecurls (Trichostema Austromontanum F.H. Lewis)
- All About Fluxweed
- All About Isanthus Brachiatus (L.) B.S.P.
- All About Isanthus Brachiatus (L.) B.S.P. Var. Linearis Fassett
- All About Scirpus Pumilus Vahl Var. Rollandii (Fern.) Beetle
- All About Scirpus Rollandii Fern.
- All About Trichophorum Pumilum (Vahl) Schinz & Thellung Ssp. Rollandii (Fern.) Taylor & MacBryde
- All About Trichophorum Pumilum (Vahl) Schinz & Thellung Var. Rollandii (Fern.) Hultén
- All About Trichophorum Rollandii (Fern.) Hultén
- All About Trichoptilium
- All About Yellowdome
- All About Scirpus Planifolius Muhl., Non Grimm
- All About Scirpus Verecundus Fern.
- All About Trichophorum Verecundum (Fern.) Mohlenbrock
- All About Rolland's Bulrush
- All About Baeothryon Pumilum (Vahl) A.& D. Löve
- All About Scirpus Pumilus Vahl
- All About Scirpus Pumilus Vahl Ssp. Rollandii (Fern.) Raymond
- All About Scirpus Cespitosus L. Var. Delicatulus Fern. [orthographic Variant]
- All About Trichophorum Caespitosum (L.) Hartman Var. Callosum (Bigelow) Mohlenbrock
- All About Trichophorum Cespitosum (L.) Hartman [orthographic Variant]
- All About Yosemite Bulrush
- All About Baeothryon Clementis (M.E. Jones) A.& D. Löve
- All About Scirpus Clementis M.E. Jones
- All About Bashful Bulrush
- All About Baeothryon Verecundum (Fern.) A.& D. Löve
- All About Scirpus Caespitosus L.
- All About Scirpus Caespitosus L. Var. Austriacus (Pallas) Aschers. & Graebn.
- All About Scirpus Caespitosus L. Var. Callosus Bigelow
- All About Scirpus Caespitosus L. Var. Delicatulus Fern.
- All About Scirpus Cespitosus L. [orthographic Variant]
- All About Scirpus Cespitosus L. Var. Austriacus (Pallas) Aschers. & Graebn. [orthographic Variant]
- All About Scirpus Cespitosus L. Var. Callosus Bigelow [orthographic Variant]
- All About Baeothryon Alpinum (L.) Egor.
- All About Eriophorum Alpinum L.
- All About Leucocoma Alpina (L.) Rydb.
- All About Scirpus Hudsonianus (Michx.) Fern.
- All About Tufted Bulrush
- All About Baeothryon Caespitosum (L.) A. Dietr.
- All About Baeothryon Cespitosum (L.) A. Dietr. [orthographic Variant]
- All About Appalachian Bristle Fern
- All About Entirewing Bristle Fern
- All About Dwarf Bristle Fern
- All About Dotted Bristle Fern
- All About Dotted Bristle Fern (Trichomanes Punctatum Poir.)
- All About Bulrush (Trichophorum Pers.)
- All About Alpine Bulrush
- All About Oncidium Luridum Auct. Non Lindl. [misapplied]
- All About Oncidium Maculatum (Aubl.) Ackerman
- All About Oncidium Undulatum (Sw.) Salisb.
- All About Bugheal
- All About Limestone Bugheal
- All About Trichocoronis Riparia (Greene) Greene
- All About Trichocoronis Wrightii (Torr. & Gray) Gray Var. Wrightii (Torr. & Gray) Gray [superfluous Autonym]