Crassula aquatica

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Water pygmyweed
Crassula aquatica.jpg
Crassula aquatica.tif
Crassula aquatica[1]
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Crassula
C. aquatica
Binomial name
Crassula aquatica

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[citation needed] 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.


Crassula aquatica is a small plant forming thin mats or small patches on mud and sand, and growing more erect when exposed to open air for longer periods. The flesh of the plant is greenish-yellow to bright red or purplish. The tiny fleshy pointed leaves are only a few millimeters long.

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. This plant is widespread across North America and Eurasia.

It is listed as a vulnerable species in Newfoundland and Labrador.[4] Cavan Allen rediscovered Crassula aquatica in Maryland in 2012 after it was last seen in that state in 1950 .[5]


  1. ^ An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 206. ( Author Britton, N.L., and A. Brown
  2. ^ "USDA Plants Profile: Crassula aquatica".
  3. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
  4. ^ "Nine Species Protected Under the Province's Endangered Species Act". Government of Newfoundland and Labrador. April 29, 2015.
  5. ^ Allen Cavan and Wesley Knapp. 2014. More Than a ‘Pygmy’ Discovery. Plant Press Vol. 17 (Number 1)

External links[edit]