ヤブツルアズキは対称軸がない非相称花です。物に絡みつきながら伸びるツル性。分類上はアズキの変種ですが、系統上はアズキの原種です。
Vigna angularis is an asymmetric flower with no axis of symmetry. A vine that stretches while being entwined with things. Although it is a variety of Azuki bean in terms of classification, it is the original species of Azuki bean in terms of strain.
【仮名】ヤブツルアズキ
【和名】藪蔓小豆
【英名】Vigna Angularis
【学名】Vigna angularis
【誕生】08/ ??
【開花】08, 09, 10月
【花色】Yellow
ヤブツルアズキ
ヤブツルアズキの分布
ヤブツルアズキはマメ科ササゲ属の一年草です。原産地は日本で、本州、四国、九州の原野に生育。国外では朝鮮半島、中国大陸、ベトナム、ミャンマー、ネパール、ブータンに分布しています。分類上はアズキの変種ですが、系統上はアズキの原種。改良された栽培種がアズキです。
ヤブツルアズキの茎葉
ヤブツルアズキは野生種で、茎がツル性。アズキが栽培種で、茎も立性であることから、「藪蔓小豆」と呼ばれるようになりました。ツルは粗い長毛が発生。他物にからみつきながら長く伸びます。葉は卵形の３出複葉で互生し、両面に黄褐色の長毛。葉柄も粗い毛が密生しています。
ヤブツルアズキの花と実
ヤブツルアズキは対称軸がない非相称花。筒状になった竜骨弁がクルリと捻れ、片方の翼弁が被さっています。もう片方の翼弁は竜骨弁を抱くように突出。果実は無毛で、線形の豆果が垂れ下がります。中の種子は熟すにつれて緑色から黒緑褐色に変わって裂開。アズキより小粒です。
Vigna Angularis
Distribution of Vigna angularis
Vigna angularis is an annual plant belonging to the genus Vigna of the family Leguminosae. It originates in Japan and grows in the wilderness of Honshu, Shikoku, and Kyushu. Overseas, it is distributed in the Korean Peninsula, Mainland China, Vietnam, Myanmar, Nepal, and Bhutan. Although it is a variety of Azuki bean in terms of classification, it is the original species of Azuki bean in terms of strain. Azuki is an improved cultivated species.
The foliage of Vigna angularis
Vigna angularis is a wild species with a smooth stem. Azuki is a cultivated species, and its stems are also erect, so it has come to be called “bush vine azuki beans”. Cranes have coarse long hair. It grows long while being entwined with other things. The leaves are oval-shaped, three-lobed compound leaves that alternate and have long yellow-brown hair on both sides. The petioles are also densely populated with coarse hair.
Flowers and fruits of Vigna angularis
Vigna angularis is an asymmetric flower with no axis of symmetry. The tubular keel valve twists and covers one of the wing valves. The other wing valve protrudes to hold the keel valve. The fruits are hairless and linear legumes hang down. The seeds inside change from green to black-green-brown as they ripen and dehiscence. It is smaller than Azuki beans.
