United States

Aconite

Aconitum napellus

Critically Endangered

Admiralty Island Meadow Vole (Admiraltiae)

Microtus pennsylvanicus

Agrimony

Agrimonia eupatoria

Near Threatened

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alder leaf beetle

Agelastica alni

Alder Spittlebug

Aphrophora alni

All Species in United States

Tripe Fungus

Auricularia mesenterica

Near Threatened

Tropical almond

Terminalia catappa

Tropical amaranth

Amaranthus polygonoides

Tropical burnweed

Erechtites valerianifolius

Tropical dock

Rumex obovatus

Tropical dropseed

Sporobolus tenuissimus

Tropical fanpetals

Sida urens

Tropical girdlepod

Mitracarpus hirtus

Tropical Mexican clover

Richardia brasiliensis

Tropical nutrush

Scleria microcarpa

Tropical sensitive pea

Chamaecrista absus

Tropical soda apple

Solanum viarum

Tropical ticktrefoil

Desmodium cajanifolium

Tropical tobacco moth

Setomorpha rutella

Tropical white morning-glory

Ipomoea alba

Tropical whitetop

Rhynchospora radicans

Tropical whiteweed

Ageratum conyzoides

Tropical wild petunia

Ruellia brevifolia

Tropic croton

Croton glandulosus

True Booted Knight

Tricholoma caligatum

True bug

Platencyrtus parkeri

True indigo

Indigofera tinctoria

true lovers knot

Lycophotia porphyrea

Trumpeter/Tundra Swan

Cygnus buccinator

Trumpet tree

Cecropia obtusifolia

Trumpet tree

Cecropia palmata

Truncated Club

Clavariadelphus truncatus

Near Threatened

Truncated Dimple Lichen

Gyalecta truncigena

truncated screw moss

Tortula truncata

Trunk Pawwort

Neoorthocaulis attenuatus

Tuart

Eucalyptus gomphocephala

tube builder

Microdeutopus gryllotalpa

Tube-building worm

Hydroides elegans

Tube-building worm

Hydroides dirampha

Tube dwelling amphipod

Jassa marmorata

Tuberous bulrush

Bolboschoenus glaucus

Tuberous comfrey

Symphytum tuberosum

Tuberous jerusalem sage

Phlomoides tuberosa

Tuberous Polypore

Polyporus tuberaster

Tuberous vervain

Verbena rigida

Tubificid worm

Potamothrix bedoti

Tubificid worm

Potamothrix vejdovskyi

Tubificid worm

Branchiura sowerbyi

Tubificid worm

Potamothrix moldaviensis

Tuckerman'S Sedge

Carex tuckermanii

Tuffybells

Wahlenbergia linarioides

Tufted Apple-Moss

Philonotis caespitosa

Endangered

Tufted Clusterfly

Pollenia pediculata

Tufted Duck

Aythya fuligula

tufted fen moss

Paludella squarrosa

tufted rock beardless moss

Gymnostomum aeruginosum

Tule Bluet

Enallagma carunculatum

tulip bulb aphid

Dysaphis tulipae

Tulip poppy

Papaver glaucum

Tulip-wood tree

Harpullia arborea

Tumbling Puffball

Bovista pila

Tumbling saltweed

Atriplex rosea

Extinct

Tumid Notchwort

Lophozia ventricosa

Tundra Swan

Cygnus columbianus

Tungoil tree

Vernicia fordii