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Weed Seed: False mayweed (Tripleurospermum maritimum subsp. maritimum)

Family

Asteraceae

Synonyms

Matricaria maritima

Distribution in Canada

Found in ON, QC, NB, NS, NL

Duration of life cycle

Perennial (occasionally biennial)

Seed/Fruit type

Achene - a one-seeded, dry fruit

Seed identification features

Size

Shape

Surface texture

Colour

Other structures

Similar species

Scentless chamomile (Tripleurospermum maritimum subsp. inodorum)

Photos

Photo - False mayweed (Tripleurospermum maritimum subspecies Maritimum) seed (showing 3 ribs)
False mayweed (Tripleurospermum maritimum subsp. maritimum) seed (showing 3 ribs)
Photo - False mayweed (Tripleurospermum maritimum subspecies Maritimum) (opposite side of seed with no ribs—note oval resin dots)
False mayweed (Tripleurospermum maritimum subsp. maritimum) (opposite side of seed with no ribs—note oval resin dots)
Photo - False mayweed (Tripleurospermum maritimum subspecies Maritimum) seeds
False mayweed (Tripleurospermum maritimum subsp. maritimum) seeds

Similar species

Photo - Similar species: Scentless chamomile (Tripleurospermum maritimum subspecies inodorum) seed (showing 3 ribs)
Similar species: Scentless chamomile (Tripleurospermum maritimum subsp. inodorum) seed (showing 3 ribs)
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