Biology:Crassula aquatica

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Short description: Species of aquatic plant

Water pygmyweed
File:Crassula aquatica.tif
Crassula aquatica[1]
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Crassula
Species:
C. aquatica
Binomial name
Crassula aquatica
(L.) Schönl.[citation needed]
Synonyms[citation needed]

Bulliarda aquatica
Hydrophylla aquatica
Tillaea angustifolia
Tillaea aquatica
Tillaea ascendens
Tillaeastrum aquaticum

Crassula aquatica is a succulent plant known by the common names water pygmyweed,[2] common pygmyweed and just pigmyweed.[3] It is an annual plant of salt marshes, vernal pools, wetlands, and other fresh to brackish water bodies. It is at least partially aquatic, living in areas which are submersed much of the time. It also lives along muddy banks and in tidally-active areas of estuaries.

Description

A flower grows on a short stalk from the intersection of each oppositely-arranged pair of leaves. The flower is only about two millimeters long and wide. The fruit is a minute follicle containing several seeds.[citation needed]

Distribution and habitat

This plant is widespread across North America and Eurasia.[4][5] It is an annual plant of salt marshes, vernal pools, wetlands, and other fresh to brackish water bodies. It is at least partially aquatic, living in areas which are submersed much of the time. It also lives along muddy banks and in tidally-active areas of estuaries.[4][5]

Conservation

It is listed as a vulnerable species in Newfoundland and Labrador.[6] Cavan Allen rediscovered Crassula aquatica in Maryland in 2012 after it had been last seen in that state in 1950.[7]

References

  1. ↑ "Crassula aquatica". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=CRAQ. "Britton, N.L., and A. Brown, 1913, An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols.. Provided by Kentucky Native Plant Society, New York." 
  2. ↑ "Crassula aquatica". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=CRAQ. 
  3. ↑ (xls) BSBI List 2007, Botanical Society of Britain and Ireland, https://bsbi.org/download/3542/, retrieved 2014-10-17 
  4. ↑ 4.0 4.1 Flora of North America Editorial Committee (2009). Flora of North America (1st ed.). New York: Oxford University Press. pp. 152. ISBN 978-0-19-534026-6. 
  5. ↑ 5.0 5.1 Masarykova Univerzita; Botanický ústav Akademie věd ČR; Jihočeská Univerzita (2025-10-28). "Crassula aquatica". https://floraveg.eu/taxon/overview/Crassula%20aquatica. 
  6. ↑ "Nine Species Protected Under the Province's Endangered Species Act". Government of Newfoundland and Labrador. April 29, 2015. http://www.releases.gov.nl.ca/releases/2015/env/0429n02.aspx. 
  7. ↑ https://nmnh.typepad.com/the_plant_press/2014/03/more-than-a-pygmy-discovery.html Allen Cavan and Wesley Knapp. 2014. More Than a ‘Pygmy’ Discovery. Plant Press Vol. 17 (Number 1)

Wikidata ☰ Q159424 entry



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