ルコウソウの花言葉は、花の色と形から「情熱」「愛らしい」。一方、蔓を伸ばして周りに絡みつくので「お節介」「出しゃばり」などです。
Cypress Vine has the flower language of “passion” and “lovely” due to its flower color and shape. On the other hand, since the vines grow and entangle around the surrounding area, there are also flower languages such as “obtrusive.”
【仮名】ルコウソウ
【和名】縷紅草
【英名】Cypress Vine
【学名】Ipomoea quamoclit
【誕生】07/ 23, 08/ 10, 08/ 24
【開花】07, 08, 09, 10月
【花色】White, Pink, Red
ルコウソウ
ルコウソウの概要
ルコウソウはヒルガオ科サツマイモ属の一年草または多年草です。原産地は北米のメキシコ。日本へは江戸時代に渡来し、本州の中部以西で野生化しました。花言葉は花の色と形から「情熱」「愛らしい」。一方、蔓を伸ばして周りに絡みつくので「お節介」「出しゃばり」などです。
ルコウソウの名前
ルコウソウの和名は「葉が糸のように細く、花が赤色の草」という意味です。ラテン語の属名イポメアは「芋虫に似ている」、種小名クアモクリットは「丈の低い豆」で、いずれも蔓性に由来。英名サイプレスバインは「糸杉の蔓草」という意味で、葉の形が糸杉に似ているからです。
ルコウソウの姿形
ルコウソウの茎は蔓性。他物に絡みつきながら旺盛に伸びます。葉は深く裂けて羽状。花は漏斗型で先端が５角形です。雄しべが５本、雌しべが突出。花後は先の尖った蒴果を上向きに着けます。種子は樹脂配糖体のファルビチンを含有。誤って食べると下痢や腹痛を引き起こします。
ルコウソウの近縁
ルコウソウの近縁種「丸葉縷紅」は花が似ていて、小さな漏斗状の５角形から雄しべと雌しべが突き出ます。一方、花色は花冠の周りが橙色、真ん中が黄色。葉はハート形です。丸葉縷紅と縷紅草の交配種「紅葉縷紅」は葉が掌状に細裂し、花が朱色。「羽衣縷紅草」とも呼ばれます。
Cypress Vine
Cypress Vine is an annual or perennial herb in the Convolvulaceae family. The place of origin is Mexico in North America. It came to Japan during the Edo period and became wild in central and western Honshu. It has a flower language that means “passion” and “lovely” due to the color and shape of the flower. On the other hand, since the vines grow and entangle around the surrounding area, there is also flower language such as “obtrusive.”
The Japanese name of Cypress Vine means “grass with thread-thin leaves and red flowers.” The Latin genus name Ipomoea means “like a caterpillar.” The species name quamoclit means “short bean”. This is due to the fact that they are both vines. The English name Cypress Vine is because the shape of the leaves resembles that of a cypress.
The stems of Cypress Vine are vining. It grows vigorously while clinging to other objects. The leaves are deeply lobed and pinnate. The flowers are funnel-shaped with a pentagonal tip. There are 5 stamens and a protruding pistil. After flowering, pointed capsules are produced facing upward. The seeds contain the resin glycoside farbitin, which can cause diarrhea and abdominal pain if accidentally eaten.
A related species of Cypress Vine, “Ipomoea coccinea”, has similar flowers, with stamens and pistils protruding from small funnel-shaped pentagons. On the other hand, the flower color is orange around the corolla and yellow in the middle. The leaves are heart-shaped. “Ipomoea x multifida”, a hybrid of Ipomoea coccinea and Ipomoea quamoclit, has palmately lobed leaves and vermilion flowers.
