Trumpet Creeper - Trumpet Creeper

A deciduous vine of the Bignoniaceae family (APG classification: Bignoniaceae). The vines grow long and have short aerial roots that allow it to climb other things. The leaves are opposite, odd-pinnate, and compound, 10-20 cm long. There are 5-9 leaflets, ovate, 3-7 cm long, with coarse sawtooth edges. In July and August, the panicles bloom at the ends of the branches, and beautiful yellow-red flowers bloom. The corolla is broad and funnel-shaped, 6-7 cm in diameter, with five lobes and a rounded tip. There are four stamens, two of which are long. Fruiting is rare. Native to China. It is planted in gardens, and there is a superstition that if you get nectar in your eyes, you will go blind. It is propagated by cuttings, layers, and division. A closely related species, Trumpet Creeper, C. radicans Seem., has compound leaves with 9 to 11 leaflets and produces long, funnel-shaped orange-red flowers measuring 4 cm in diameter.

[Yoshio Kobayashi October 20, 2021]

The Bignoniaceae family is distributed mainly in the tropics, and 82 genera and approximately 870 species are known as of 2018. In Japan, some species are planted for decorative purposes, such as the Trumpet Creeper and Catalpa.

[Editorial Department, October 20, 2021]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

ノウゼンカズラ科（APG分類：ノウゼンカズラ科）の落葉藤本(とうほん)（つる植物）。つるは長く伸び、短い気根を出して他物をよじ登る。葉は対生し、奇数羽状複葉で長さ10～20センチメートル。小葉は5～9枚、卵形で長さ3～7センチメートル、縁(へり)に粗い鋸歯(きょし)がある。7～8月、枝先に円錐(えんすい)花序をつくり、美しい黄赤色花を開く。花冠は広い漏斗(ろうと)形で径6～7センチメートル、先は5裂して丸い。雄しべは4本で、うち2本は長い。結実はまれである。中国原産。庭に植栽され、蜜(みつ)が目に入ると失明するという迷信がある。繁殖は挿木、取木、株分けによる。近縁種アメリカノウゼンカズラC. radicans Seem.は、複葉の小葉は9～11枚、長い漏斗形で径4センチの橙赤(とうせき)色花を開く。

［小林義雄　2021年10月20日］

　ノウゼンカズラ科Bignoniaceaeはおもに熱帯に分布し、2018年のデータでは82属約870種が知られる。日本にはノウゼンカズラやキササゲのように観賞用に植えられているものがある。

［編集部　2021年10月20日］

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