What types of yellow allamanda are there? A detailed introduction to common yellow allamanda varieties
Yellow allamanda belongs to the genus Allamanda in the family Apocynaceae. This genus has 15 species, distributed in tropical America. The common species and cultivated species introduced and grown in China include: yellow allamanda, willow-leaved allamanda, double-flowered willow-leaved allamanda, small-leaved willow-leaved allamanda, white allamanda, and purple allamanda. Yellow allamanda is an evergreen shrub. Leaves are 3-5 in whorls, ovate-lanceolate, with entire margins. Cymes are terminal. Flowers are lemon yellow, the base of the corolla swollen into a funnel shape. The flowering period is from April to December.
1. Flowering period: September to April of the following year.
2. Inflorescence: 1-2, racemose, 9-16 flowers.
3. Flower scape (flower arrow): 40-50 cm.
4. Bracts (shell, bract sheath): very short, only 0.9-1.1 cm; membranous and semi-transparent, appressed to the ovary, not connate at the base.
5. Scape sheath (covering shell): 12-14 cm, 7-8 in total, appressed to the flower scape, connate at the lower base into a tube, gradually shorter upward until the last one is not connate.
6. Number of leaves per seedling (clump): 7-9 leaves.
7. Leaf margin: entire.
8. Leaf stalk scar: obvious.
9. Sheath-like leaves: 12-15 cm long, thickly leathery.
10. Other: leathery and relatively thick, tough in texture, the upper part spreading and drooping (some are also upright and robust), green, leaf surface flat and smooth, the midrib protruding toward the back.
The main characteristics of Iris-like Cymbidium are as follows:
Leaves: 4-8 leaves, strap-shaped, 45-70 (-90) cm long, (1.6-) 2-4 cm wide, apex acute, the joint located 6-15 cm from the base.
Flowers: The flower scape emerges from the base of the pseudobulb through the sheath, nearly upright or horizontally spreading, slightly drooping, 40-70 cm long or longer; the raceme has 7-13 flowers; flower bracts nearly triangular, 2-3 mm long; pedicel and ovary 4-4.5 cm long; flowers relatively large, up to 10 cm in diameter, fragrant.
Sepals and petals are yellow-green, with 7-9 thick pale brown or reddish-brown veins; the lip is pale yellow and has similar veins on the lateral lobes; the mid-lobe has red spots and blotches; the callus is yellow and has chestnut-colored spots on the front part; sepals narrowly obovate-oblong, 3.7-4.5 cm long, 1.2-1.5 cm wide, lateral sepals slightly twisted; petals narrowly ovate-oblong, 3.5-4.6 cm long, 7-9 mm wide, slightly falcate; the lip nearly elliptic, slightly shorter than the petals, 3-lobed, connate with the column at the base for 4-5 mm; the lateral lobes have short cilia on the edges and short hairs on the upper surface; the mid-lobe strongly recurved, with 2-3 rows of long hairs in the center, connected to the tip of the callus and extending to the upper part of the mid-lobe, the rest sparsely short-hairy, the margin erose and wavy;
On the lip disc, 2 longitudinal calli extend from the upper part to the middle, but rapidly become narrow toward the base, the apex relatively thick, with long hairs on the middle and upper parts; the column 2.5-2.9 cm long, curved forward, with short hairs at the base of the ventral surface; pollinia 2, nearly triangular.
The flowering period is from September to April of the following year. It is distributed in Sichuan, Yunnan, Guizhou, Tibet and other places. It is also distributed in northern India, Bhutan, Nepal and other places.
This species is similar to Cymbidium hookerianum, but the pseudobulb is slightly larger, the sepals and petals are equal in width, the perianth is yellow-brown, and the lip does not change much after pollination, so it is easy to distinguish.
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What types of Chinese orchids are there?
Flower and Bonsai Network, Flower Cultivation Basics section: What types of Chinese orchids are there?
Chinese orchids refer to the terrestrial orchid species in the genus Cymbidium of the family Orchidaceae. They have been cultivated in China for more than 2000 years. We have selected many excellent varieties from them. They are loved by people for their unique fragrance, beautiful flower shapes and leaf shapes. According to the flowering period, the number of flowers on each flower stem, and leaf shape, they are divided into nine major categories:
(1) Chunlan (Spring Orchid): blooms in February to March, generally with 1-2 flowers per flower stem, including line-leaved Chunlan (also called Xianlan), Chunjian, Zhushalan and
Xuelan. Famous varieties include Cuilusu, Jinhuangsu, Yahuangsu, Xianlansu, Yumeisu, etc.
(2) Huilan (also known as Jiujielan, Xialan): flowering period April to May, with 7-15 flowers per flower stem; the variety Songchun blooms in March to April, with 3-9 flowers per flower stem. Famous varieties include Shanghai Mei, Wenzhou Su, Yahuang Songchun, Cuilu Songchun.
(3) Duohualan: blooms in April to May, with 30-50 flowers per flower stem, among which Tailan (also known as Fengzilan) has 15-30 flowers per flower stem.
(4) Tu'erlan: flowering period June, with 3-6 flowers per flower stem. The leaf shape resembles rabbit ears. (5) Jianlan (also known as Jianhui): blooms in August to September, with 3-9 flowers per flower stem, among which Xiahui (Huicao) blooms in July to October, with 3-6 flowers per flower stem; the variety Suxin Jianlan (Qiusu) exists, and famous varieties include Xiahui Su, Tiegu Su, etc.
(6) Changyeland: blooms in September to December, with several to more than 10 flowers per flower stem.
(7) Hanlan: flowering period October to November, with 6-14 flowers per flower stem, including Qing Hanlan, Hong Hanlan, and Zi Hanlan. Famous varieties include Yinling, Cuiyu, Ziyun, etc.
(8) Hutoulan (large-flowered Jianlan): among them, Qingchanlan blooms in January to March, with 10-18 flowers per flower stem. Huangchanlan blooms in March to April, with 9-16 flowers per flower stem. Hongchanlan blooms in February to March, with 9-15 flowers per flower stem.
(9) Molan (Baosuilan): flowering period February to March, with 5-10 flowers per flower stem. Famous varieties include Baimo, Sumo, Fengwei Baosuilan, etc.