Lace leaf - Lace leaf (English spelling)

Japanese: レースソウ - れーすそう(英語表記)lace leaf
Lace leaf - Lace leaf (English spelling)

A perennial aquatic plant of the Laceaceae family (APG classification: Laceaceae). Native to Madagascar, it is cultivated in aquariums for decorative purposes. The rhizome is long and creeping. The submerged leaves are 15-30 cm long, with thin stalks and obovate or oblong leaf blades. They lack mesophyll and have reticulate veins, giving them a beautiful lace-like appearance. From summer to autumn, they produce long flower stalks, at the end of which emerge above the water surface and bear forked inflorescences. The flowers are small and numerous, yellowish-white, with two perianths and six stamens. They require water depths of about 40 cm, adequate light and fresh water, and grow well in water temperatures of 20-24°C. They are propagated by seed or division.

[Kiyohisa Matsuoka September 19, 2018]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

レースソウ科(APG分類:レースソウ科)の多年生の水草。マダガスカル原産で観賞用に水槽などで栽培される。根茎は長く匍匐(ほふく)する。葉は沈水性で、長さ15~30センチメートル、柄は細く、葉身は倒卵形ないし長楕円(ちょうだえん)形。葉肉がなく、葉脈が網目状をなし、レース状で美しい。夏から秋に長い花茎を出し、その先に水面から出て叉(さ)状に分かれた花序をつける。花は小さくて多数つき、黄白色で花被(かひ)は2枚、雄しべは6本。栽培は水深を40センチメートル程度、適量の光線と新鮮な水を必要とし、水温20~24℃でよく生育する。繁殖は実生(みしょう)または株分けによる。

[松岡清久 2018年9月19日]

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