Aksiba - Aksiba

It is a deciduous shrub of the genus Vaccinium in the family Ericaceae (APG classification: Ericaceae). There is a theory that it should be treated as a separate genus in the genus Hugeria . It is 20-80 cm tall and has green branches. The leaves are alternate, ovate, 2-6 cm long, pointed at the tip, and have fine sawtooth edges. The surface has concave veins and a net pattern. In June and July, pale pink-white flowers open downward on 1-2 cm long drooping flower stalks in the leaf axils. The corolla is deeply divided into four lobes, the lobes are lanceolate, about 1 cm long, and curved outward, and there are eight stamens that protrude from the flower like a beak, and the calyx is shallowly divided into four lobes. The fruit is spherical, about 7 mm in diameter, hangs down on a thin stalk, and ripens red in September and October. It grows in mountainous areas and is distributed in southwestern Hokkaido, Honshu, Shikoku, Kyushu, and Jeju Island in the south of the Korean Peninsula. The variant, Keikakuba, has small leaves and glandular hairs on the young branches, leaves, and flower stalks, and is distributed from the Kinki region of Honshu westward, Shikoku, and Kyushu.

[Yoshio Kobayashi April 16, 2021]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

ツツジ科（APG分類：ツツジ科）スノキ属の落葉低木。アクシバ属Hugeriaを認めて別属にする説もある。高さ20～80センチメートルで枝は緑色。葉は互生し、卵形、長さ2～6センチメートルで先がとがり、縁に細かい鋸歯(きょし)がある。表面は脈がへこみ、網目がある。6～7月、葉腋(ようえき)に長さ1～2センチメートルの花柄を下垂して、淡紅白色の花が下向きに開く。花冠は深く4裂し、裂片は披針(ひしん)形、長さ約1センチメートルで外側に反り返り、雄しべは8本でくちばし状に花外に突き出て、萼(がく)は浅く4裂する。果実は球形、径約7ミリメートルで細い柄で垂れ下がり、9～10月に紅色に熟す。山地に生え、北海道南西部、本州、四国、九州、朝鮮半島南の済州島に分布する。変種のケアクシバは葉が小さく、若枝、葉、花柄に腺毛(せんもう)があり、本州の近畿地方以西、四国、九州に分布する。

［小林義雄　2021年4月16日］

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