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Weed Seed: Silky bent-grass (Apera spica-venti)

Family

Poaceae

Synonyms

Agrostis spica-venti

Distribution in Canada

Found in ON

Duration of life cycle

Winter annual

Seed/Fruit type

Grain, enclosed by palea and lemma

Seed identification features

Size

Shape

Surface texture

Colour

Other structures

Similar species

Interrupted bent-grass (Apera interrupta)

Velvet bent-grass (Agrostis canina)

Species Comparison Chart

Species Length Awn length Surface texture
silky bent-grass 3.0–3.7 mm 4.0–7.0 mm roughened
interrupted bent-grass 4.0–5.0 mm 4.0–14.0 mm roughened
velvet bent-grass 4.0–5.0 mm 1.0–3.0 mm smooth

Photos

Photo - Silky bent-grass (Apera spica-venti) seed (showing inner side)
Silky bent-grass (Apera spica-venti) seed (showing inner side)
Photo - Silky bent-grass (Apera spica-venti) seed (close-up of inner side [rachilla])
Silky bent-grass (Apera spica-venti) seed (close-up of inner side [rachilla])
Photo - Silky bent-grass (Apera spica-venti) seed (showing outer side [lemma])
Silky bent-grass (Apera spica-venti) seed (showing outer side [lemma])
Photo - Silky bent-grass (Apera spica-venti) seeds
Silky bent-grass (Apera spica-venti) seeds

Similar species

Photo - Interrupted bent-grass (Apera interrupta) seed (showing inner side)
Similar species: Interrupted bent-grass (Apera interrupta) seed (showing inner side)
Photo - Interrupted bent-grass (Apera interrupta) seed (showing outer side)
Similar species: Interrupted bent-grass (Apera interrupta) seed (showing outer side)
Photo - Velvet bent-grass (Agrostis canina) seed (showing inner side)
Similar species: Velvet bent-grass (Agrostis canina) seed (showing inner side)
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