- Flower nameLaportea cuspidata
- Scientific nameLaportea cuspidata
- Alias深山刺草, イラ
- Place of originJapan, the Korean Peninsula, and China
- Place of floweringLow mountains, Sub-alpine
- Flowering seasonJuly, August, September
What is Laportea cuspidata
Laportea cuspidata or Miyama nettle (scientific name: Laportea cuspidata) is a perennial herb native to Japan, the Korean Peninsula, and China. It grows wild in forests in mountainous to subalpine areas in Hokkaido, Honshu, and Kyushu. It is also called "ira. The green stem is erect and grows to about 1 meter in height. The entire grass has spiny hairs. The leaves have long petioles and are green, broadly ovate, and have coarse serrations on the leaf margins. It is dioecious. The male inflorescence is produced downward and the female inflorescence is produced upward from summer to autumn.
Common name: Laportea cuspidata or Miyama nettle, scientific name: Laportea cuspidata, Nettles, habitat: Japan, Korean Peninsula, China, habitat: mountainous to subalpine forests, grass: 70 to 110 cm, leaf shape: round to broadly ovate, leaf length Leaf length: 8-20 cm, leaf width: 5-15 cm, leaf margin: coarsely serrate, inflorescence: alternate, dioecious, flowering season: July to September, reproductive mode: wind-pollinated, inflorescence: conical, male flowers: calyx 5, stamens 5, male flower color: white, place of flower: leaf axils below branches, inflorescence: acicular, female flowers: calyx 4, flower column 1, female flower color: green, place of flower Location: leaf axils at branch tips; Fruit type: thin; Fruit shape: distorted oval; Note: Young stems are vegetable.