Japanese flatsedge
Scientific Name: Cyperus microiria Stauder
Family: Cyperaceae
MORPHOLOGY
Habit and Size: Annual plant, typically 10 to 20 cm tall, but can grow up to 90 cm.
Stem: Numerous stems, clustered, surrounded by sheaths only in the lower part.
Leaves: Leaves with elongated blades, up to 5 mm wide.
Flowers: Inflorescence surrounded at the base by 3-4 bracts exceeding the flowers; branches 3-8, 3-10 cm long; spikes yellowish-brown, about 2 x 10 mm, with a fairly broadly winged rachis. Blooms from July to September.
Fruits and Seeds: Triangular-ellipsoid achene.
DISTRIBUTION AND HABITAT
Invasive non-native species present from Tuscany northward, excluding Liguria and Aosta Valley. Grows on riverbanks and muddy areas, from sea level up to 300 meters.
Photo Credits: Freely licensed from iNaturalist



















