U.S. Fish & Wildlife Service Threatened & Endangered Species

As the principal federal partner responsible for administering the Endangered Species Act (ESA), the USFWS takes the lead in recovering and conserving our Nation's imperiled species by fostering partnerships, employing scientific excellence, and developing a workforce of conservation leaders. To learn more, visit USFWS Environmental Conservation Online System.


Thumb Species Characteristics

Aconitum noveboracense
Northern blue monkshood, New York monkshood

Duration: Perennial
Habit: Herb
Light: Part-shade
Water:

Amaranthus pumilus
Seaside amaranth

Duration: Annual
Habit:
Light:
Water:

Apios priceana
Price's groundnut, Traveler's delight

Duration: Perennial
Habit: Herb, Vine
Light:
Water:

Arctomecon humilis
Common bear-poppy, Little desert-poppy

Duration: Perennial
Habit: Herb
Light:
Water:

Asplenium scolopendrium var. americanum
American hart's-tongue fern

Duration: Perennial
Habit: Herb, Fern
Light: Sun, Shade, Part-shade
Water: Moist

Baptisia arachnifera
Cobwebby wild indigo

Duration: Perennial
Habit:
Light:
Water:

Blennosperma bakeri
Baker's stickyseed

Duration: Annual
Habit: Herb
Light:
Water:

Callirhoe scabriuscula
Texas poppymallow

Duration: Annual
Habit: Herb
Light: Sun
Water: Moist, Dry

Castilleja levisecta
Golden Indian paintbrush

Duration: Perennial
Habit: Herb
Light: Sun
Water: Moist

Chamaesyce rockii
Koolau Range sandmat

Duration: Perennial
Habit: Tree
Light:
Water:

Chionanthus pygmaeus
Pygmy fringetree

Duration:
Habit:
Light: Sun
Water:

Cirsium pitcheri
Sand dune thistle

Duration: Biennial
Habit: Herb
Light: Sun
Water: Dry

Clarkia imbricata
Vine Hill clarkia

Duration: Annual
Habit: Herb
Light: Sun, Part-shade
Water:

Clematis morefieldii
Huntsville vasevine

Duration:
Habit: Vine
Light: Sun, Part-shade
Water: Moist

Clematis socialis
Alabama leather flower

Duration:
Habit:
Light:
Water:

Conradina glabra
Apalachicola false rosemary

Duration:
Habit:
Light:
Water:

Conradina verticillata
Cumberland false rosemary

Duration: Perennial
Habit: Shrub
Light: Sun
Water:

Coryphantha ramillosa
Whiskerbrush

Duration: Perennial
Habit: Cactus/Succulent
Light:
Water:

Cryptantha crassipes
Terlingua Creek Cat's-eye, Terlingua Creek Cryptantha

Duration: Perennial
Habit: Herb, Subshrub
Light:
Water:

Echinacea laevigata
Smooth purple coneflower

Duration: Perennial
Habit: Herb
Light:
Water:

Echinocereus chisoensis
Chisos hedgehog, Chisos Mountain hedgehog cactus

Duration: Perennial
Habit: Cactus/Succulent
Light: Sun
Water: Dry

Echinocereus viridiflorus var. davisii
Davis' hedgehog cactus

Duration: Perennial
Habit: Cactus/Succulent
Light: Sun
Water: Dry

Echinomastus mariposensis
Lloyd's Fishhook Cactus, Mariposa Cactus

Duration: Perennial
Habit: Cactus/Succulent
Light:
Water:

Eriogonum ovalifolium var. vineum
Cushenbury Buckwheat

Duration: Perennial
Habit: Herb
Light:
Water:

Fremontodendron mexicanum
Mexican flannelbush, Southern flannelbush, Southern fremontia, Mexican fremontia

Duration: Perennial
Habit: Shrub
Light: Sun
Water: Dry

Helianthus paradoxus
Paradox sunflower, Puzzle sunflower, Pecos sunflower

Duration: Annual
Habit: Herb
Light:
Water:

Helonias bullata
Swamppink

Duration:
Habit:
Light:
Water:

Ipomopsis polyantha
Pagosa ipomopsis

Duration: Perennial
Habit: Herb
Light:
Water:

Iris lacustris
Dwarf lake iris

Duration: Perennial
Habit: Herb
Light: Sun
Water:

Isotria medeoloides
Small whorled pogonia, Green fiveleaf orchid

Duration: Perennial
Habit: Herb
Light:
Water:

Kokia drynarioides
Hawai'i treecotton

Duration: Perennial
Habit: Tree
Light:
Water:

Lesquerella pallida
White bladderpod

Duration: Annual
Habit: Herb
Light:
Water:

Liatris helleri
Heller's blazing star

Duration:
Habit:
Light:
Water:

Lilium occidentale
Western lily

Duration: Perennial
Habit: Herb
Light:
Water:

Limnanthes vinculans
Sebastopol meadowfoam

Duration: Annual
Habit: Herb
Light:
Water:

Malacothamnus clementinus
San Clemente Island bushmallow

Duration: Perennial
Habit: Subshrub, Shrub
Light:
Water:

Manihot walkerae
Walker's manioc, Walker's manihot, Texas tapioca

Duration: Perennial
Habit: Herb
Light:
Water:

Marshallia mohrii
Mohr's Barbara's buttons

Duration:
Habit:
Light:
Water:

Pedicularis furbishiae
Furbish's lousewort, St. Johns River lousewort

Duration: Perennial
Habit: Herb
Light: Shade
Water:

Pediocactus bradyi
Brady's hedgehog cactus, Brady's pincushion cactus

Duration: Perennial
Habit: Cactus/Succulent
Light: Sun
Water: Dry

Platanthera leucophaea
Prairie white fringed orchid, Eastern prairie fringed orchid, White prairie fringed orchid

Duration: Perennial
Habit: Herb
Light: Sun, Shade, Part-shade
Water: Moist

Platanthera praeclara
Great Plains white fringed orchid

Duration: Perennial
Habit: Herb
Light: Sun
Water: Wet, Moist

Quercus hinckleyi
Hinckley oak

Duration: Perennial
Habit: Shrub
Light:
Water:

Rhododendron chapmanii
Chapman's rhododendron

Duration: Perennial
Habit: Shrub
Light:
Water:

Sarracenia oreophila
Green Pitcherplant

Duration:
Habit:
Light:
Water:

Sarracenia rubra ssp. alabamensis
Alabama pitcherplant

Duration:
Habit:
Light:
Water:

Sarracenia rubra ssp. jonesii
Jones' pitcherplant

Duration:
Habit:
Light:
Water:

Schwalbea americana
Chaffseed

Duration:
Habit:
Light:
Water:

Sclerocactus brevihamatus ssp. tobuschii
Shorthook fishhook cactus

Duration: Perennial
Habit: Cactus/Succulent
Light:
Water:

Scutellaria floridana
Florida skullcap

Duration: Perennial
Habit: Herb
Light:
Water:

Silene polypetala
Eastern fringed catchfly, Fringed pink

Duration: Perennial
Habit:
Light:
Water:

Spiraea virginiana
Virginia meadowsweet

Duration:
Habit:
Light:
Water:

Thymophylla tephroleuca
Ashy pricklyleaf

Duration: Perennial
Habit: Herb
Light:
Water:

Torreya taxifolia
Florida nutmeg, Florida torreya

Duration: Perennial
Habit: Tree
Light: Sun, Part-shade
Water:

Trillium persistens
Persistent wakerobin

Duration:
Habit:
Light:
Water:

Trillium reliquum
Confederate wakerobin

Duration:
Habit:
Light:
Water:

Zizania texana
Texas wildrice

Duration: Perennial
Habit: Grass/Grass-like
Light: Sun
Water: Wet