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shortawn foxtail
Scientific Name: Alopecurus aequalis var. aequalis
Family: Poaceae
Category: Monocot
Growth: Graminoid
Duration: Perennial
Other Names:
Shortawn Foxtail (Alopecurus aequalis)
Alopecurus aequalis, commonly known as shortawn foxtail or orange foxtail, is a grass species found in various parts of the world.
Considerations for Pets
- As a grass species, shortawn foxtail produces small parts that could pose a choking hazard if ingested by small animals.
Taxonomy and Nomenclature
- Scientific Name: Alopecurus aequalis Sobol.
- Common Names: Shortawn foxtail, Orange foxtail, Water Foxtail, Red-Yellow Foxtail, Red-Yellow Foxtail Grass, Short-Awned Foxtail, Dent Foxtail, Marsh Meadow-foxtail.
- Family: Poaceae (Grass family), also referred to as Gramineae
- Synonyms: Alopecurus aristulatus, Alopecurus fulvus
- Varieties:
- Alopecurus aequalis var. aequalis
- Alopecurus aequalis var. natans
- Alopecurus aequalis var. sonomensis
Distribution and Habitat
- This species is widespread, found in Eurasia and the Americas.
- It is often found growing in wetlands and on the edges of ponds.
- In China, it is commonly found in east, south-central, and southwest regions, as well as parts of the Yellow River basin.
- It has also been observed in North America and Germany.
Morphological Characteristics
- Alopecurus aequalis can be either an annual or perennial grass, growing up to 0.3 meters (1 foot) in height.
- It flowers from May to June. The flowers are hermaphrodite, possessing both male and female reproductive parts.
- The lemmas (modified leaves enclosing the flower) are glabrous (smooth) and joined at the base.
- The fertile lemma features a short awn (a bristle-like appendage) that originates from below the middle of its length.
Ecological Role
- Shortawn foxtail is considered a troublesome grass weed, particularly in winter wheat and oilseed rape productions in China.
- It can be a competitive grass weed.
Quirky Facts
- The name "foxtail" comes from the grass head's resemblance to a fox's tail.
Herbicide Resistance
- Multiple cases of resistance to ACCase and AHAS-inhibiting herbicides have been documented in shortawn foxtail populations from China.
- Resistance to fenoxaprop has also been established.