Dieffenbachia; dumb cane; dumb plant; mother-in-law's tongue plant

Japanese: ディフェンバキア（英語表記）Dieffenbachia; dumb cane; dumb plant; mother-in-law's tongue plant

A genus of the Araceae family. Japanese name: Shirogasurisou. 20-30 species are distributed in tropical America. An evergreen perennial with alternate, oblong leaves. Large species can reach 2m in height. A leaf sheath at the base of the leaf wraps around a cylindrical, fleshy stem. There are many horticultural varieties, and beautiful varieties with fine white or pale yellow spots or stripes on the leaves are grown in pots as ornamental plants. The sap that comes out of the cut contains poisonous substances that, if ingested, will numb the person and make them unable to speak, so it is also called dumb cane or mute cane. It prefers high temperatures and humidity. Except in midsummer, it is better to expose the plant to sunlight to prevent the leaves from burning, as this will help the plant to become firmer. In winter, water sparingly and keep the temperature above 10°C.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

サトイモ科の1属。和名シロガスリソウ。熱帯アメリカに 20～30種が分布する。長楕円形の葉が互生する常緑多年草。大型種は 2mに達することもある。葉のつけ根の葉鞘 (ようしょう) が，円柱状で多肉質の茎を包む。園芸品種も多く，葉に白や淡黄色の細かい斑紋 (はんもん) や縞斑をもつ葉色の美しい種類が，観葉植物として鉢栽培される。切り口から出る液汁は有毒成分を含み，口に入るとしびれて話すことができなくなるため，唖甘蔗 (あかんしょ) ，英名ダム・ケーン (物を言えない茎) の呼称もある。高温多湿を好む。真夏以外は，葉焼けしない程度に日に当てたほうが株が締まる。冬期は水を控え目にして 10℃以上に保つ。

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