铁十字海棠(Begonia masoniana),又名马蹄形海棠,秋海棠科秋海棠属植物。原产东南亚,华南植物园从泰国引种。铁十字海棠为多年生草本,叶片生在根状茎放射状抽出的细长叶柄上,错落有致;叶片颜色为深绿色,叶脉网格状凹陷使叶片呈沙皮状;主脉呈鲜艳夺目的“黑十字”或马蹄形,赫然于叶片上,线条粗犷,笔划雄劲,使人不得不叹服大自然造 Begonia masoniana (Begonia masoniana), also known as horseshoe Begonia, Begonia Begonia genus. Native Southeast Asia, South China Botanical Garden introduced from Thailand. Iron cross Begonia as a perennial herb, the leaves were born in the rhizome radial withdrawal of the elongated petiole, patchwork; leaf color is dark green, leaf veins grid-like depression leaves were Shaxi; Cross "or horseshoe, impressively on the leaves, rough lines, strokes and vigorous, people have to admire nature made