Japanese name: ナガバアメリカミコシガヤ Scientific name:Carex vulpinoidea
[Overview]
In its native range, a perennial 60–80 cm tall, growing in wetlands.
The rhizome is short, and the stems grow in tufts.
The leaves are linear, 2–5 mm wide, and the front of the leaf sheath is white, membranous, and wrinkled.
A cylindrical inflorescence 3–8 cm long and 1 cm across is borne at the stem tip, densely bearing 10–20 spikelets.
Each spikelet has a few male flowers in the upper part and many female flowers in the lower part.
The stigma is divided into 2.
Sometimes a bract longer than the inflorescence is produced.
The perigynium is flat and ovoid, 2 mm long, with 3 veins on the back; the upper margin is rough, and the upper end gradually becomes a beak.
[History]
A naturalized plant first recorded in 1992 in a fallow rice field in Sagamihara, Kanagawa.
