Girish Mahajan

Pontederia cordata

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Kingdom  Plantae
Family  Pontederiaceae
Scientific name  Pontederia cordata
Rank  Species
Order  Commelinales
Genus  Pontederia
Higher classification  Pontederia
Pontederia cordata httpsnewfss3amazonawscomtaxonimages1000s1
Similar  Pontederia, Thalia dealbata, Schoenoplectus tabernaemontani, Pontederiaceae, Purple‑loosestrife

Blue pickerel plant pontederia cordata


Pontederia cordata, common name pickerelweed (USA) or pickerel weed (UK), is a monocotyledonous aquatic plant native to the American continent. It grows in a variety of wetlands, including pond and lake margins across an extremely large range from eastern Canada south to Argentina. A few examples include northern rivers, the Everglades and Louisiana.

Contents

Pontederia cordata Pontederia cordata

Pickerelweed pontederia cordata


Ecology

Pontederia cordata Pontederia cordata Wikipedia

The species grows as an emergent plant, that is, in flooded conditions, so the plant is generally dependent upon aerenchyma in the stem to carry oxygen into the roots. Its metabolism, is, however, also tolerant of low soil oxygen. It is often found in areas where water levels fluctuate naturally, with spring flooding and later summer emergence. Apart from flooding, the species is also influenced by soil fertility, tending to grow in the more fertile bays of large lakes, for example. Like many aquatic plants, it is negatively affected by salinity and grazing. It is also negatively affected by competition from other wetland plants. Like many wetland plants, it can survive unfavorable conditions as buried seeds in the soil.

Flowers

Pontederia cordata Pontederia cordata L Checklist View

The plant flowers in late summer. The purple flowers have yellow markings which may assist in attracting bees for pollination. Two species known to pollinate the flowers are Melissodes apicata and Dufourea (Halictoides) novaeangliae. Once the plant begins to produce seeds, the stem supporting the infloresence bends to submerse the fruits and seeds. Seeds are dormant at the time of dispersal and will not germinate without stratification for 6-8 weeks.

Pontederia cordata Pontederia cordata pickerel weedRHS Gardening

The flowers of the species are tristylous, meaning the styles of individual plants occur in three different morphs, with most populations containing all three. Leaf shape, which varies considerably across populations, within populations, and even within individuals, has been the source for many taxonomic synonyms. Like many wetland and aquatic plants, the species can reproduce asexually by means of branching rhizomes, and hence can form large clonal stands.

Cultivation

This plant is cultivated as an ornamental garden plant, and has gained the Royal Horticultural Society's Award of Garden Merit.

References

Pontederia cordata Wikipedia


Similar Topics
Pontederia
Pontederiaceae
Schoenoplectus tabernaemontani
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