Plant Database (by name)

twining snoutbean - Rhynchosia tomentosa (L.) Hook. & Arn. var. tomentosa

twinleaf - Jeffersonia diphylla (L.) Pers.

twinleaf onion - Allium anceps Kellogg

twinleaf senna - Senna bauhinioides (Gray) Irwin & Barneby

twisted cleomella - Cleomella plocasperma S. Wats.

twisted draba - Draba incana L.

twisted sedge - Carex torta Boott ex Tuckerman

twistedstalk - Streptopus lanceolatus (Ait.) Reveal var. roseus (Michx.) Reveal

twistleaf goldenrod - Solidago tortifolia Ell.

twistleaf yucca - Yucca pallida McKelvey

twistspine pricklypear - Opuntia macrorhiza Engelm.

twistspine pricklypear - Opuntia macrorhiza Engelm. var. macrorhiza

two-wing silverbell - Halesia diptera Ellis

twocolor phacelia - Phacelia bicolor Torr. ex S. Wats.

twoflower dwarfdandelion - Krigia biflora (Walt.) Blake

twoflower dwarfdandelion - Krigia biflora (Walt.) Blake var. biflora

twoflower melicgrass - Melica mutica Walt.

twoflower passionflower - Passiflora biflora Lam.

twoflower violet - Viola ×viarum Pollard [missouriensis or nephrophylla × pedatifida]

twoflowered rush - Juncus biglumis L.

twogrooved milkvetch - Astragalus bisulcatus (Hook.) Gray

twoheaded water-starwort - Callitriche heterophylla Pursh

twoleaf miterwort - Mitella diphylla L.

twoleaf senna - Senna roemeriana (Scheele) Irwin & Barneby

twoleaf watermilfoil - Myriophyllum heterophyllum Michx.

twolobe larkspur - Delphinium nuttallianum Pritz. ex Walp.

twoneedle pinyon - Pinus edulis Engelm.

tworow stonecrop - Sedum spurium Bieb.

twospike crabgrass - Digitaria pauciflora A.S. Hitchc.

twospike fingergrass - Eustachys floridana Chapman

twotipped sedge - Carex lachenalii Schkuhr

Tyrol knapweed - Centaurea nigrescens Willd.

uhiuhi - Caesalpinia kavaiensis Mann

Uinta Basin beardtongue - Penstemon grahamii Keck

Uinta Basin hookless cactus - Sclerocactus glaucus (J.A. Purpus ex K. Schum.) L. Benson

Uinta Basin plainsmustard - Schoenocrambe argillacea (Welsh & Atwood) Rollins

Uinta Basin waxfruit - Glaucocarpum suffrutescens (Rollins) Rollins

ulota moss - Ulota coarctata (P. Beauv.) Hammar

ulota moss - Ulota crispa (Hedw.) Brid.

ulota moss - Ulota phyllantha Brid.

uluhe - Dicranopteris emarginata (T. Moore) W.J. Robins.

umbrella flatsedge - Cyperus diandrus Torr.

umbrella-tree - Magnolia tripetala (L.) L.

undulate atrichum moss - Atrichum undulatum (Hedw.) P. Beauv.

undulate dicranum moss - Dicranum undulatum Brid.

undulate plagiothecium moss - Plagiothecium undulatum (Hedw.) Schimp. in B.S.G.

upland bentgrass - Agrostis perennans (Walt.) Tuckerman

upland boneset - Eupatorium sessilifolium L.

upland dewberry - Rubus invisus (Bailey) Britt.

upland yellow violet - Viola praemorsa Dougl. ex Lindl. ssp. linguifolia (Nutt.) M.S. Baker & J.C. Clausen ex M.E. Peck