Hanaikada - Hanaikada

Japanese: ハナイカダ - はないかだ
Hanaikada - Hanaikada

A deciduous shrub in the Cornaceae family (APG classification: Cornaceae). It grows to 2 meters tall. The trunk is yellowish brown. The leaves are thin, elliptical, 6-12 cm long, and have low, sharp awn-like teeth at the tip. Dioecious. In May, pale yellow flowers bloom in the center of the leaves. The name comes from the leaf's resemblance to a raft when the flowering leaves appear. The drupes are oblong, 6-7 mm long, and black when ripe. They are found in southwestern Hokkaido, Honshu, Kyushu, Okinawa, and Chugoku, and grow in the mountains and fields.

The genus Acanthodes consists of three species and is distributed in Japan, China, and the Himalayas.

[Yuichi Kadota November 17, 2021]
In the APG classification, the genus Helwingiaceae is an independent family. Helwingiaceae has a wide range of morphological variation, and some consider grouping them into one species.

[Editorial Department, November 17, 2021]

Hanaikada
The leaves are thin and have low, sharp sawtoothed tips. In May, pale yellow flowers bloom near the center of the leaves. ©Shogakukan Photo by Masatoshi Hirose ">

Hanaikada


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

ミズキ科(APG分類:ハナイカダ科)の落葉低木。高さ2メートル。幹は黄褐色。葉は薄く、楕円(だえん)形、長さ6~12センチメートル、先端が芒(のぎ)状にとがる低い鋸歯(きょし)がある。雌雄異株。5月、葉の中央に淡黄色の花を開く。名は、この花をつけた葉を筏(いかだ)に例えたもの。核果は長楕円形、長さ6~7ミリメートルで黒く熟す。北海道南西部、本州、九州、沖縄、および中国に分布し、山野に生える。

 ハナイカダ属は3種からなり、日本、中国、ヒマラヤに分布する。

[門田裕一 2021年11月17日]
 APG分類ではハナイカダ属はハナイカダ科Helwingiaceaeとして独立した。ハナイカダは形態の変異の幅が広く、1種にまとめる考え方もある。

[編集部 2021年11月17日]

ハナイカダ
葉は薄く、先端が芒状にとがる低い鋸歯がある。5月ごろ、葉の中央付近に淡黄色の花をつける©Shogakukan 撮影/広瀬雅敏">

ハナイカダ


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