Plant Database (by name)

thicket sedge - Carex abscondita Mackenzie

thickhead sedge - Carex macloviana d'Urv.

thickleaf beardtongue - Penstemon pachyphyllus Gray ex Rydb.

thickleaf beardtongue - Penstemon pachyphyllus Gray ex Rydb. var. congestus (M.E. Jones) N. Holmgren

thickleaf draba - Draba crassa Rydb.

thickleaf phlox - Phlox carolina L.

thickleaf yerba santa - Eriodictyon crassifolium Benth.

thicksepal cryptantha - Cryptantha crassisepala (Torr. & Gray) Greene

thickspike wheatgrass - Elymus macrourus (Turcz.) Tzvelev

thickstem aster - Eurybia integrifolia (Nutt.) Nesom

thickstem wild cabbage - Caulanthus crassicaulis (Torr.) S. Wats.

thickstem wild cabbage - Caulanthus crassicaulis (Torr.) S. Wats. var. glaber M.E. Jones

thimbleberry - Rubus parviflorus Nutt.

thimbleberry - Rubus parviflorus Nutt. var. parviflorus

thin paspalum - Paspalum setaceum Michx.

thinfruit sedge - Carex flaccosperma Dewey

thinleaf alder - Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung

thinleaf cottonsedge - Eriophorum viridicarinatum (Engelm.) Fern.

thinleaf huckleberry - Vaccinium membranaceum Dougl. ex Torr.

thinleaf late purple aster - Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom

thinleaf mountainmint - Pycnanthemum montanum Michx.

thinleaf sedge - Carex cephaloidea (Dewey) Dewey

thinleaf sunflower - Helianthus decapetalus L.

thistle - Cirsium P. Mill.

thistle cholla - Cylindropuntia tunicata (Lehm.) F.M. Knuth

thistle sage - Salvia carduacea Benth.

Thompson's beardtongue - Penstemon thompsoniae (Gray) Rydb.

Thompson's yucca - Yucca thompsoniana Trel.

Thomson's calcareous moss - Mnium thomsonii Schimp.

thorn skeletonweed - Pleiacanthus spinosus (Nutt.) Rydb.

thoroughwort - Eupatorium L.

thread rush - Juncus filiformis L.

threadleaf crowfoot - Ranunculus trichophyllus Chaix var. trichophyllus

threadleaf evening-primrose - Oenothera linifolia Nutt.

threadleaf false foxglove - Agalinis setacea (J.F. Gmel.) Raf.

threadleaf phacelia - Phacelia linearis (Pursh) Holz.

threadleaf phlox - Phlox mesoleuca Greene

threadleaf ragwort - Senecio flaccidus Less. var. flaccidus

threadleaf sedge - Carex filifolia Nutt.

threadleaf sundew - Drosera filiformis Raf.

three toothed saxifrage - Saxifraga tricuspidata Rottb.

three-angle spikerush - Eleocharis tricostata Torr.

three-rib arrowgrass - Triglochin striata Ruiz & Pavón

threebirds - Triphora trianthophora (Sw.) Rydb.

threecorner leek - Allium triquetrum L.

threeflower melicgrass - Melica nitens (Scribn.) Nutt. ex Piper

threeflower ticktrefoil - Desmodium triflorum (L.) DC.

threehearts - Tricardia watsonii Torr. ex S. Wats.

threehulled rush - Juncus triglumis L.

threeleaf false lily of the vally - Maianthemum trifolium (L.) Sloboda