Plants — 23,508 Species

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California caltrop
Zygophyllaceae

California caltrop

Kallstroemia californica (S.Watson) Vail

Kallstroemia californica is a mat-forming annual herb that grows on sandy substrates and produces distinct flowers and fruit.

Arizona poppy
Zygophyllaceae

Arizona poppy

Kallstroemia grandiflora Torr. ex A.Gray

Arizona poppy (Kallstroemia grandiflora) is an unrelated summer annual desert herb with showy orange flowers.

Warty Caltrop
Zygophyllaceae

Warty Caltrop

Kallstroemia parviflora Norton

Kallstroemia parviflora is a small-flowered annual Zygophyllaceae plant found from the US to Central America, preferring dry soils near roads and railroads.

sheep laurel
Ericaceae

sheep laurel

Kalmia angustifolia L.

Kalmia angustifolia L., or sheep laurel, is a toxic evergreen shrub native to eastern North America, grown ornamentally.

sand myrtle
Ericaceae

sand myrtle

Kalmia buxifolia (Bergius) Gift & Kron

Kalmia buxifolia, or sandmyrtle, is a variable flowering shrub native to disjunct sites in the eastern United States.

Sandhill laurel
Ericaceae

Sandhill laurel

Kalmia hirsuta Walter

Kalmia hirsuta is a hairy shrub native to the southeastern US that grows in low-elevation sandy open habitats.

mountain laurel
Ericaceae

mountain laurel

Kalmia latifolia L.

Kalmia latifolia, or mountain laurel, is a toxic evergreen North American shrub grown ornamentally for its attractive clustered flowers.

Western Bog Laurel
Ericaceae

Western Bog Laurel

Kalmia microphylla (Hook.) A.Heller

Kalmia microphylla is a poisonous evergreen shrub found in northwestern North America that has medicinal uses.

Swamp Laurel
Ericaceae

Swamp Laurel

Kalmia polifolia Wangenh.

Kalmia polifolia is a toxic North American bog shrub with pink to purple flowers, eaten by caribou and used for medicine.

alpine azalea
Ericaceae

alpine azalea

Kalmia procumbens (L.) Gift, Kron & P.F.Stevens

Kalmia procumbens is an evergreen shrub widespread across northern hemisphere subarctic and high mountain areas.

Castor-Aralia
Araliaceae

Castor-Aralia

Kalopanax septemlobus (Thunb.) Koidz.

Kalopanax septemlobus is a hardy deciduous tree grown ornamentally, eaten as a vegetable in Korea, and considered a concern in parts of the U.S.

Kandelia obovata Sheue, H.Y.Liu & J.W.H.Yong
Rhizophoraceae

Kandelia obovata Sheue, H.Y.Liu & J.W.H.Yong

Kandelia obovata Sheue, H.Y.Liu & J.W.H.Yong

Kandelia obovata is a widely planted East Asian mangrove species with characteristic floating water-dispersed propagules.

Coyotillo
Rhamnaceae

Coyotillo

Karwinskia humboldtiana (Roem. & Schult.) Zucc.

Karwinskia humboldtiana, common names coyotillo, is a toxic Rhamnaceae shrub/small tree native to southern US and Mexico.

chaparral beardtongue
Plantaginaceae

chaparral beardtongue

Keckiella antirrhinoides (Benth.) Straw

Keckiella antirrhinoides is a deciduous desert shrub that produces distinctive light yellow snapdragon-like flowers.

bush beardtongue
Plantaginaceae

bush beardtongue

Keckiella breviflora (Lindl.) Straw

Keckiella breviflora is a bushy branching shrub that produces distinctive pink and white hairy lobed flowers with a specialized staminode.

heartleaf keckiella
Plantaginaceae

heartleaf keckiella

Keckiella cordifolia (Benth.) Straw

Keckiella cordifolia, or heartleaf keckiella, is a flowering shrub native to coastal areas of southern California and northern Baja California.

redwood keckiella
Plantaginaceae

redwood keckiella

Keckiella corymbosa (Benth.) Straw

Keckiella corymbosa is an erect narrow keckiella that bears colorful lobed tubular flowers with characteristic stamens and a staminode.

blue-stemmed keckiella
Plantaginaceae

blue-stemmed keckiella

Keckiella ternata (Torr. ex A.Gray) Straw

Keckiella ternata is a shrub with toothed leaves and solid red tubular flowers, often growing over two meters tall.

milk kelloggia
Rubiaceae

milk kelloggia

Kelloggia galioides Torr.

Kelloggia galioides is a rhizomatous perennial herb native to coniferous forests of the western United States.

Coral Vine
Fabaceae

Coral Vine

Kennedia coccinea (Curtis) Vent.

Kennedia coccinea is a leguminous climbing shrub with three subspecies native to south-west Western Australia, grown in horticulture.

Running Postman
Fabaceae

Running Postman

Kennedia prostrata R.Br.

Kennedia prostrata (running postman) is a prostrate Australian twining shrub with scarlet flowers, grown widely in horticulture.

Dusky coral pea
Fabaceae

Dusky coral pea

Kennedia rubicunda (Schneev.) Vent.

Kennedia rubicunda is a vining legume native to eastern Australia, grown in horticulture to cover slopes and structures.

Japanese Kerria
Rosaceae

Japanese Kerria

Kerria japonica (L.) DC.

Kerria japonica is a spring-flowering garden shrub with medicinal uses, and two of its cultivars hold the RHS Award of Garden Merit.

Sharp-leaved Fluellen
Plantaginaceae

Sharp-leaved Fluellen

Kickxia elatine (L.) Dumort.

Kickxia elatine is a small trailing hairy herb with snapdragon-like spurred flowers and spherical fruit capsules.

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