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Pontederia cordata L.
PICKEREL WEED
Pontederia lanceolata Nutt; Pickerelweed

Life   Plantae   Monocotyledoneae   Pontederiaceae   Pontederia

Pontederia cordata, Pickerelweed
© Copyright Sheryl Pollock 2011 · 7
Pontederia cordata, Pickerelweed

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Pontederia cordata
© Copyright Bobby Hattaway 2011 · 5
Pontederia cordata
Pontederia cordata, Whole plant
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, Whole plant

Pontederia cordata, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, inflorescence - whole - unspecified
Pontederia cordata, leaf - on upper stem
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, leaf - on upper stem

Pontederia cordata, stem - showing leaf bases
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, stem - showing leaf bases
Pontederia cordata, whole plant - in flower - general view
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, whole plant - in flower - general view

Pontederia cordata, inflorescence - frontal view of flower
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, inflorescence - frontal view of flower
Pontederia cordata, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, inflorescence - whole - unspecified

Pontederia cordata, inflorescence - frontal view of flower
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, inflorescence - frontal view of flower
Pontederia cordata, leaf - basal or on lower stem
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, leaf - basal or on lower stem

Pontederia cordata, stem - showing leaf bases
© Copyright Steve Baskauf, 2002-2011 · 4
Pontederia cordata, stem - showing leaf bases
Pontederia cordata, habitat
© George Yatskievych, 2003 · 1
Pontederia cordata, habitat

Pontederia cordata, leaf and flower
© Kay Yatskievych, 2003 · 1
Pontederia cordata, leaf and flower
Pontederia cordata, pickerelweed, flower
© Copyright Hank Ohme, 2008 · 1
Pontederia cordata, pickerelweed, flower

Associates · map
FamilyScientific name @ source (records)
Apidae  Bombus fervidus @ CUIC_ENT (2)

Bombus impatiens @ CUIC_ENT (3)

Bombus vagans @ AMNH_BEE (1)

Melissodes apicata @ CUIC_ENT (6)

Melissodes communis @ AMNH_BEE (5)

Peponapis pruinosa @ CUIC_ENT (2)

Triepeolus lunatus @ CUIC_ENT (1)
Delphacidae  Megamelus davisi @ UDCC_NRI (1)
Doassansiaceae  Doassansia pontederiae @ BPI (1)
Halictidae  Dufourea novaeangliae @ BBSL (231); AMNH_BEE (7); CUIC_ENT (24)

Halictus confusus @ CUIC_ENT (1)

Lasioglossum lineatulum @ CUIC_ENT (1)
Mycosphaerellaceae  Cercospora pontederiae @ BPI (3)

Cercosporella pontederiae @ BPI (2)

Mycosphaerella pontederiae @ BPI (3)
Pucciniaceae  Uromyces pontederiae @ BPI (21)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Pontederia cordata L. Pickerelweed
Pontederiaceae — Water-hyacinth family
Native
Pontederia cordata Pontederia cordata
Paper Mill Park
September 2008

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
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Pontederia cordata  L. - Pickerel-weed

Pontedaria cordata plant

Family - Pontederiaceae

Stems - No info. yet.

Leaves - No info. yet.

Inflorescence - No info. yet.

Pontedaria cordata inflorescence Inflorescence.

Flowers - No info. yet.

Pontedaria cordata flowers Flowers.

Flowering - June - October.

Habitat - Swamps, lakes, ponds, river bottoms.

Origin - Native to U.S.

Other info. - This striking species can be found scattered along the margins of the state, but is apparently absent from most of the interior counties. The plant is easy to ID in the field because of its growth habit, shiny green leaves, and purple flowers. It can, and often is, grown as an ornamental in garden ponds.
The young leaves of this species can be eaten as well as the nutritious, grain-like fruits.

Photographs taken in Brown Summit, NC., 6-10-02.


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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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FNA Vol. 26 Page 45 , 46 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 26 | Pontederiaceae | Pontederia

1. Pontederia cordata Linnaeus, Sp. Pl. 1: 208. 1753.

Pontédérie cordée, langue du boeuf

Narukila cordata (Linnaeus) Nieuwland; Pontederia angustifolia Pursh; P. cordata var. lanceolata (Nuttall) Grisebach; P. cordata var. lancifolia (Muhlenberg) Torrey; P. lanceolata Nuttall; P. lancifolia Muhlenberg; Unisema cordata (Linnaeus) Farwell

Plants perennial, rooted in mud. Vegetative stems contracted, rhizomatous. Flowering stems erect, to 120 cm. Sessile leaves: blade linear. Petiolate leaves emersed; stipule 7—29 cm; petiole distinctly constricted just below blade, to 60 cm; blade lanceolate to cordate, 6—22 × 0.7—12 cm. Spikes with up to several hundred flowers, 2—15 cm; spathes 5—17 cm. Perianth mauve, tube 3—9 mm, limb lobes oblanceolate, 5—8 mm, distal central lobe with 2-lobed yellow spot; proximal stamens 7—13 mm, distal 1.5—6.3 mm; style 3-lobed. Utricles with dentate ridges, 4—6 × 2—3 mm.

Flowering Mar--Nov in Florida; flowering season shorter farther north. Pond and lake margins; 0--500 m; N.B., N.S., Ont., P.E.I., Que.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.; Mexico; Central America (Belize); South America.

Pontederia cordata has a large number of synonyms, at the levels of species, variety, and form (see R. M. Lowden 1973 for most names). Almost all these names are based on variations in leaf shape, but extensive morphological variation has been observed within single populations and even in individual plants. Study is needed to determine the cause of the extreme leaf base forms of cuneate on lanceolate blades and cordate on ovate blades. Variation has also been observed in peduncle pubescence. A velutinous peduncle and ovate leaf blade with slightly cuneate base is consistently found among some South American populations, hence recognition there of var. ovalis (Martius) Solms.

The reproductive biology of Pontederia cordata has been well studied (R. Ornduff 1966; S. D. Price and S. C. H. Barrett 1982, 1984). It is a tristylous species, and most populations contain all three morphs (S. D. Price and S. C. H. Barrett 1982). At least some degree of self-incompatibility exists, being strongest with the short-style morphs and weakest with the midstyle morphs (R. Ornduff 1966).

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Pontederia+cordata&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Pontederia+cordata&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2017-12-16 05:43:31 gmt
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