Trachelospermum asiaticum

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Trachelospermum asiaticum
Trachelospermum asiaticum jd pt.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Trachelospermum
Species:
T. asiaticum
Binomial name
Trachelospermum asiaticum

Trachelospermum asiaticum, the Asiatic jasmine, is a species of flowering plant in the family Apocynaceae and it is native to Asia. [1] Its flowers resemble stars, so it is also referred to as yellow star jasmine or Asian star jasmine. [2] This is a fast growing evergreen vine, often used to cover fences, walls, and similar surfaces. It is heat- and cold- tolerant, and grows even in shady areas. [3]

Contents

Etymology

The Latin specific epithet asiaticum means "from Asia".

It was first described by Philipp Franz von Siebold and Joseph Gerhard Zuccarini in 1846. Bavarian physician and naturalist Siebold spent time in Japan between 1823 and 1829. Back in Germany with his collections, he was assisted by Zuccarini, professor of botany at the University of Munich to describe this plant under its original name of Malouetia asiatica (1846).

Description

Growing to 6 m (20 ft) tall, Trachelospermum asiaticum is a woody, evergreen climber with glossy, leathery leaves and strongly scented cream-coloured flowers in summer. [4] The stems, when cut, exude a milky white latex. The leaves are simple and opposite, persistent, borne by a petiole 2–10 mm, with an elliptic limb, narrowly ovate, 2–10 x 1–5 cm, membranous. Glossy green leaves have a brown-orange tinge stained reddish during the winter. The hardiest Trachelospermum species, this plant can be grown in temperate areas against a sheltered wall or fence. It has been known to spread rapidly, and can take over large areas very rapidly. [5]

The white or cream flowers have a yellow heart and emit a scent of jasmine. They are held in terminal or axillary cymes. The five sepals are contiguous to the tube of the corolla and carry 10 basal glands. The hypocrateriform corolla consists of a tube 6-10mm long, with an enlarged throat, and five obovate lobes, as long as the tube. The stamens are inserted into the throat of the corolla tube. The anthers are exerted (protrude outside the tube, unlike T. jasminoides). The hairless ovary consists of two carpels. Flowering takes place from late spring to summer.

The fruit consists of two linear follicles, 10–30 by 0.3–0.5 cm. The seeds are oblong with at one end a 3.5 cm egret. [6]

Range

Variegated variety Trachelospermum asiaticum cv2.jpg
Variegated variety
Comparison of T. jasminoides and T. asiaticum Trachelospermum jasminoides-asiaticum.jpg
Comparison of T. jasminoides and T. asiaticum

Trachelospermum asiaticum is native to China, India, Japan, Korea, Indo-China and Malaysia. It grows in mountain forests and scrub, often attached to trees.

Cultivation

Quite similar to the false jasmine Trachelospermum jasminoides , T. asiaticum produces flowers with a slightly smaller yellow or cream heart. It has faster growth in the early years. It provides an ornamental liana, planted along a wall or trellis, in semi-shade or sunny exposure, providing intense fragrance during the flowering period in summer. It can withstand brief frosts down to -15 °C. [7]

It has gained the Royal Horticultural Society's Award of Garden Merit. [8]

There are several cultivars with various patterns of variegation and also dwarf varieties.

Chemical composition

Many flavonoids were extracted from the leaves of Trachelospermum asiaticum var. intermedium: apigenin 7-Oglucoside, luteolin, luteolin-4, rhoifolin, lonicerine, kaempferol 3-O-rhamnoside, quercitrin, and phenolic compounds such as lignan and chlorogenic acid. [9]

Of triterpenes oleanolic type were also detected: the acid 2α, 3β, 19α, 23,24-pentahydroxyoléan-12-en-28-oic acid or trachélospérogénine E 8.

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References

  1. 1 2 "Trachelospermum asiaticum (Siebold & Zucc.) Nakai". Plants of the World Online. Kew Science. Retrieved 17 June 2020.
  2. "Trachelospermum asiaticum (Asian Star Jasmine, Asiatic Jasmine, Yellow Star Jasmine) | North Carolina Extension Gardener Plant Toolbox". plants.ces.ncsu.edu. Retrieved 2021-12-08.
  3. "How to grow and trim Asiatic jasmine". Shiny Plant. 2020-07-15. Retrieved 2021-02-10.
  4. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN   978-1405332965.
  5. Mori Tamezô, An Enumeration of Plants Hitherto Known From Corea 293. 1922
  6. Fumiko A and Tatsuo Y , " Glycosides of 19α-Hydroxyoleanan-type triterpenoids from Trachelospermum asiaticum (Trachelospermum IV) ", Chem Pharm Bull , vol. 35, n o 5,1987
  7. Christophe Wiart , Ethnopharmacology of medicinal plants Asia and the Pacific , Totowa, NJ, Humana Press,2006 ( ISBN   1588297489 , 9781588297488 , 9781597451604 and 1597451606
  8. "RHS Plant Selector - Trachelospermum asiaticum". RHS. Retrieved 5 March 2021.
  9. Hosoi, Shinzo; Shimizu, Eri; Tanaka, Toshihiro; Sakai, Eiji; Yamada, Mitsuko; Sakushima, Akiyo (2008). "Main phenolic compounds from the flower of Trachelospermum asiaticum var. intermedium (Apocynaceae)". Journal of Natural Medicines. 62 (3): 354–355. doi:10.1007/s11418-008-0232-5.