Plants — 23,508 Species

annual tiquilia

Tiquilia nuttallii (Benth. ex Hook.) A.T.Richardson

Tiquilia nuttallii is an annual subshrub-like desert plant native primarily to western North America, with a disjunct population in Missouri.

Palmer's crinklemat

Tiquilia palmeri (A.Gray) A.T.Richardson

Tiquilia palmeri is a woody perennial herb that acts as the main host for the rare Coachella Valley grasshopper.

fan-leaved tiquilia

Tiquilia plicata (Torr.) A.T.Richardson

Tiquilia plicata is a short perennial subshrub found in lower elevation deserts of the southwestern US and northwestern Mexico.

Mexican sunflower

Tithonia diversifolia (Hemsl.) A.Gray

Tithonia diversifolia is a Mexican-origin shrub that is invasive and used for fertilizer, medicine, and forage.

Red Sunflower

Tithonia rotundifolia (Mill.) S.F.Blake

Tithonia rotundifolia is a sun-loving flowering plant grown ornamentally, used for hedge backgrounds.

tree marigold

Tithonia tubaeformis (Jacq.) Cass.

Tmesipteris elongata Dangeard

Tmesipteris elongata Dangeard

Tmesipteris elongata is a critically endangered fern endemic to southeastern Australia and New Zealand.

Fork Fern

Tmesipteris tannensis (Spreng.) Bernh.

Tmesipteris tannensis is an endemic New Zealand fern ally, usually epiphytic, found in South Island podocarp/broadleaf forests.

king fern

Todea barbara (L.) T.Moore

Todea barbara, commonly called king fern, is a large fern found in Australia and New Zealand, grown ornamentally in cultivation.

False Asphodel

Tofieldia calyculata (L.) Wahlenb.

Tofieldia calyculata is a flowering plant species in the Tofieldiaceae family, native from Gotland to the Pyrenees and Ukraine.

Scottish Asphodel

Tofieldia pusilla (Michx.) Pers.

Tofieldia pusilla, or Scottish asphodel, is a circumpolar flowering plant used in Scottish folk medicine to treat multiple ailments.

Youth-on-Age

Tolmiea menziesii (Pursh) Torr. & A.Gray

Tolmiea menziesii is a plant with cucumber-scented leaves, unusual reproduction, and slug-deterrent compounds, grown ornamentally.

Black Eyes

Tolpis barbata (L.) Gaertn.

Tolpis barbata is an Asteraceae flowering plant native to Mediterranean southern Europe, introduced as a weed elsewhere.

Tolpis succulenta (Aiton) Lowe

Tolpis succulenta (Aiton) Lowe

Tolpis succulenta is a perennial flowering plant with a woody base, toothed glabrous leaves, and scattered yellow flowers.

wedgeleaf draba

Tomostima cuneifolia (Nutt.) Al-Shehbaz, M.Koch & Jordon-Thaden

Tomostima cuneifolia, or wedgeleaf draba, is an annual Brassicaceae flowering plant native to the southern US and northern Mexico.

lesser baby innocence

Tonella tenella (Benth.) Jeps.

Tonella tenella is a small annual herb in Plantaginaceae native to western North America, growing in forest understory on moist rocky soil.

lyall's tonestus

Tonestus lyallii (A.Gray) A.Nelson

Tonestus lyallii is a small perennial flowering aster from western North America, known as Lyall's goldenweed or Lyall's serpentweed.

Australian Red Cedar

Toona ciliata M.Roem.

Toona ciliata M.Roem. is a large deciduous Australian tree valued for its popular red timber, now commercially extinct in much of its native range.

Tun tree

Toona sinensis (A.Juss.) M.Roem.

Toona sinensis is a deciduous tree valued for its edible leaves, timber, ornamental use, and reported medicinal properties.

Mediterranean Hartwort

Tordylium apulum L.

Tordylium apulum L. (Mediterranean hartwort) is an edible Apiaceae plant native to the Mediterranean region.

Brittle False Pimpernel

Torenia crustacea (L.) Cham. & Schltdl.

Torenia crustacea is an Asian small herb that is widely naturalized, has traditional medicinal uses, and confirmed bioactive properties.

common hedge parsley

Torilis arvensis (Huds.) Link

Torilis arvensis, or spreading hedge parsley, is an annual weedy flowering plant in the Apiaceae family native to parts of Europe.

upright hedge-parsley

Torilis japonica (Houtt.) DC.

Torilis japonica, Japanese hedge parsley, is a flowering plant with medicinal properties including potential anti-cancer effects.

Knotted Hedgeparsley

Torilis nodosa (L.) Gaertn.

Torilis nodosa, or knotted hedgeparsley, is an annual weedy flowering Apiaceae native to Europe and introduced to North America.