What are the other names for yellow allamanda? An introduction to its common aliases

Other names for yellow allamanda

Yellow allamanda, an upright shrub plant, is also called yellow oleander vine.

Origin of yellow allamanda

This variety originated in Brazil and is now widely cultivated in tropical regions. It is cultivated in gardens in Guangxi, Guangdong, Fujian, Taiwan, China and Beijing (inside greenhouses) in China.

Morphological characteristics of yellow allamanda

Yellow allamanda is about 1-2 m tall, has milky sap, and its branches are grayish white.

The leaves are in whorls of 3-5, entire, mostly elliptical or obovate-oblong, about 6-12 cm long and about 2-4 cm wide. The leaf tip is acuminate or acute, the base is cuneate, the upper surface of the leaf is dark green, and the underside is light green. Except for the midvein and lateral veins on the underside of the leaf, which have fine hairs, the rest is hairless.

The veins are flat on the upper surface and raised on the underside. There are 7-12 lateral veins on each side, which network together before reaching the margin; the petiole is very short, and there are glands at the base and in the axils.

The cyme of yellow allamanda is terminal, the pedicel has fine hairs, and the flowers are yellow, 4-6 cm long, with an opening about 4 cm in diameter. The bracts are lanceolate and borne at the base of the pedicel.

The corolla is funnel-shaped, with red-brown stripes inside. The lower part of the corolla is cylindrical, no more than 2 cm long and 2-4 mm in diameter, swollen at the base. The throat expands upward into the limb, about 3 cm long and about 1.5 cm in diameter. The top of the limb is 5-lobed, and the corolla lobes overlap to the left. The lobes are ovate or round, with obtuse tips, 1.6-2.0 cm long and about 1.7 cm wide.

Yellow allamanda has 5 stamens, growing in the throat of the corolla tube. The filaments are relatively short and have fine hairs at the base. The anthers are ovate with relatively obtuse tips. The disk is fleshy and entire, the ovary is entire, 1-loculed, the style is filiform, and the stigma is obtuse at the tip and ring-shaped at the base.

The capsule of yellow allamanda is spherical, with long spines, about 3 cm in diameter. The seeds are flat, with a membranous margin, about 2 cm long and about 1.5 cm wide. The flowering period is from May to August, and the fruiting period is from October to December.