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water whorlgrass
Scientific Name: Catabrosa aquatica
Family: Poaceae
Category: Monocot
Growth: Graminoid
Duration: Perennial
Other Names: WI (brook grass)
Water Whorl-grass (Catabrosa aquatica)
Water Whorl-grass, scientifically known as Catabrosa aquatica, is also commonly referred to as brookgrass or simply whorl-grass. The name "whorl-grass" likely refers to the whorled arrangement of its flowerhead branches.
Taxonomy and Nomenclature
- Scientific Name: Catabrosa aquatica (L.) P. Beauv.
- Family: Poaceae (Grass family)
- Synonyms:
- Aira aquatica L.
- Subspecies:
- Catabrosa aquatica ssp. aquatica
- Catabrosa aquatica var. uniflora (ssp. minor)
- Catabrosa aquatica var. aquatica
Distribution and Habitat
Water Whorl-grass is native to northern temperate regions and is often found in standing water. It is also documented in locations such as Jylland, Danmark, Outer Hebrides and the Rivers Eye and Dikler north-east of Bton-on-the-Water.
Morphological Characteristics and Growth Habits
- It is a creeping aquatic perennial grass.
- The flowerhead is an open pyramid-shaped or oblong-shaped panicle, typically 4-8 inches in height.
- The branches of the panicle spread in whorls.