Iron Cross Begonia

...There are a huge number of varieties, with as many as 400 in Japan alone. The Iron Cross begonia B. masoniana (English name: iron cross begonia) (illustration), which resembles the Rex begonia and has dark reddish purple spots along the radial veins of its leaves, and the small B. bowerae var. nigramarga , which has black patterns along the veins, are often seen in gardening stores. Rhizomatous begonias, especially Rex begonias, are mainly propagated by leaf cuttings, but they can also be propagated by rhizome cuttings and division. ...

*Some of the terminology that mentions "iron cross begonia" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…品種数は膨大で，日本だけでも400品種にのぼる。レックス･ベゴニアによく似ていて，葉に放射状の脈に沿って濃い赤紫色の斑が入るアイアン･クロスB.masoniana(英名iron cross begonia)（イラスト）や小型で葉脈に沿って黒色模様のあるボウェレー･ニグラマルガB.bowerae var.nigramargaなどを，園芸店でよくみかける。根茎性，とくにレックス･ベゴニア類の繁殖は，主として葉挿しにするが，根茎挿しや株分けもされる。…

※「iron cross begonia」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報