アリアケカズラ / Allamanda

アリアケカズラ / Allamanda Backyard
アリアケカズラ / Allamanda
広告

アリアケカズラの名前の由来は不詳。丸みを帯びた明るい黄色の花を、「有明」の満月や灯火に見立てたのかもしれません。「葛」は蔓植物。

The Japanese name of Allamanda means “vine of dawn when the moon still remains”, but its origin is unclear. The round, bright yellow flowers may have been likened to the full moon or lights at dawn.

【仮名】アリアケカズラ, アラマンダ
【和名】有明葛
【英名】Allamanda, Common Trumpetvine, Golden Trumpet, Yellow Allamanda
【学名】Allamanda cathartica
【誕生】08/ 13
【開花】04, 05, 06, 07, 08, 09, 10月
【花色】Pink, Yellow

Allamanda cathartica - flower from the front
Allamanda cathartica – flower from the front
Allamanda cathartica - flower and buds from an angle
Allamanda cathartica – flower and buds from an angle
Allamanda cathartica - a side view of the flower starting to bloom
Allamanda cathartica – a side view of the flower starting to bloom
Allamanda cathartica - buds and flowers
Allamanda cathartica – buds and flowers

アリアケカズラ

アリアケカズラの概要

アリアケカズラはキョウチクトウ科の常緑低木です。原産地はブラジルで、世界中に拡大。日本のような温帯では蔓性です。蔓を傷つけると毒性のある白色の乳液が染み出し、誤って摂取すると下痢などを引き起こす恐れも。一方、かつて民間療法では葉が下剤などに用いられました。

アリアケカズラの名前

アリアケカズラの名前の由来は不詳。丸みを帯びた明るい黄色の花を「有明」の満月や灯火に見立てたのかもしれません。「葛」は蔓植物。ラテン語の属名アラマンダはスイスの植物学者フレデリック・ルイ・アラマンドへの献名で、種小名カタルティカは「清める」という意味です。

アリアケカズラの姿形

アリアケカズラの葉は長楕円形で対生または輪生します。花は漏斗形で5裂。雄しべが5本あるものの、雌しべとともに短く、奥の方に隠れます。花後は蒴果を形成。園芸種として大輪の「ヘンダーソニー」や「グランディフロラ」、八重咲きの「スタンシルズ・ダブル」もあります。

アリアケカズラの近縁

アリアケカズラの近縁種「姫有明葛」は姿形が似ているものの、原産地が南アフリカ。葉が先の尖った長楕円形で、渦巻き状に輪生します。花が春に咲いて一回り小さく、蒴果が棘のある球形。一方、近縁種「ビオラケア」は原産地が同じブラジルでありながら花が鮮やかな桃色です。

Allamanda

Introduction of Allamanda

Allamanda is an evergreen shrub in the Apocynaceae family. It originates from Brazil and has spread all over the world. In temperate regions like Japan, it is a climbing plant. When the vines are damaged, a toxic white milky fluid oozes out, which can cause diarrhea if accidentally ingested. However, the leaves were once used as a laxative in folk medicine.

Name of Allamanda

The Japanese name of Allamanda means “vine of dawn when the moon still remains”, but its origin is unclear. The round, bright yellow flowers may have been likened to the full moon or lights at dawn. The Latin genus name Allamanda is a tribute to the Swiss botanist Frederic Louis Allamand. The species name cathartica means “to purify.”

Shape of Allamanda

Allamanda leaves are oblong and opposite or whorled. The flowers are funnel-shaped and 5-lobed. Although there are five stamens, they are short and hidden in the back along with the pistils. After flowering, a capsule is formed. Garden varieties include the large-flowered “Hendersonii” and “Grandiflora” and the double-flowered “Stansill’s Double.”

Relatives of Allamanda

Allamanda’s closely related species, “schottii”, has a similar appearance but is native to South Africa. The leaves are oblong with a pointed tip and grow in whorls. The flowers bloom in spring and are slightly smaller, and the capsules are spherical with spines. On the other hand, the closely related species “violacea” has bright pink flowers even though it originates from Brazil.

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