しなのぐるみ (信濃胡桃) [Index] [Back]

Juglans regia

Juglans regia

Juglans regia

Juglans regia

「ペルシャぐるみ」と「てうちぐるみ」の自然交配種だと考えられています。「しなのぐるみ」は主に長野県で生産され、多くの園芸品種が東御市を中心に作出されています。高さは20メートルほどになり、奇数羽状複葉です。4月から5月ごろ、雌花序を直立、雄花序を下垂させて花を咲かせます。果実は堅果で10月に熟します。仁は12〜14グラムで、殻が比較的薄く大型です。長野県では、別名で「かしぐるみ(樫胡桃)」とも呼ばれます。
クルミ科クルミ属の落葉高木で、学名は Juglans regia。
英名は Shinano walnut。
Shinano walnut (Juglans regia) belongs to Juglandaceae (the Walnut family). It is a tall decidous tree that is believed to be a natural hybrid between English walnut (Juglans regia) and Walnut (Juglans regia var. orientis). This tree is mainly cultivated in Nagano prefecture and many cultivars have been mainly breeded in Tomi city. It can reach about 20 m in height and the leaves are odd-pinnate compound. The flowers bloom from April and May. The female flowers are erect and the male flowers are drooping. The fruits are nuts and ripen in October. The kernel is large, weighs 12-14 g and has relatively-thin hulls.
長野県東御市鞍掛「くるみ街道」にて、2010年07月24日撮影。

Shu Suehiro
shu@botanic.jp