The Plant of the Week descriptions are organized alphabetically by genus and species.
Horned Dandelion (Taraxacum ceratophorum)
Goat's Rue (Tephrosia virginiana)
Bitterweed (Tetraneuris acaulis var. acaulis)
Old-Man-of-the-Mountain (Tetraneuris grandiflora)
Fewflower meadow-rue (Thalictrum sparsiflorum)
Crane-fly Orchid (Tipularia discolor)
Wyoming Townsend Daisy (Townsendia alpigena)
Western Poison-ivy (Toxicodendron rydbergii)
Appalachian Bristle Fern (Trichomanes boschianum)
Starflower (Trientalis borealis)
Dwarf Clover (Trifolium nanum)
Catesby’s Trillium (Trillium catesbaei)
Northern Nodding Trillium (Trillium cernuum)
Little Sweet Betsy (Trillium cuneatum)
Decumbent Trillium (Trillium decumbens)
Mottled Wakerobin (Trillium discolor)
Red Trillium (Trillium erectum)
Nodding Wakerobin (Trillium flexipes)
Graceful Trillium (Trillium gracile)
Great White Trillium (Trillium grandiflorum)
Lance-leaved Trillium (Trillium lancifolium)
Louisiana Trillium (Trillium ludovicianum)
Yellow Trillium (Trillium luteum)
Snow Trillium (Trillium nivale)
Salmon Mountain wake robin (Trillium ovatum var. oettingeri)
Western White Trillium (Trillium ovatum var. ovatum)
Persistent Trillium (Trillium persistens)
Dwarf Trillium (Trillium pusillum var. pusillum)
Virginia Dwarf Trillium (Trillium pusillum var. virginianum)
Relict Trillium (Trillium reliquum)
Southern Nodding Trillium (Trillium rugelii)
Toadshade (Trillium sessile)
Sweet white trillium (Trillium simile)
Rainbow Wakerobin (Trillium sulcatum)
Texas Wakerobin (Trillium texanum)
Painted Trillium (Trillium undulatum)
Vasey's Trillium (Trillium vaseyi)
Green Trillium (Trillium viride)
Orange-Fruited Horse Gentian (Triosteum aurantiacum)
Three Birds Orchid (Triphora trianthophora)
Ithuriel's Spear (Triteleia laxa)
American globeflower (Trollius laxus)