Thunbergia laurifolia

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Thunbergia laurifolia
Thunbergia laurifolia 8723.jpg
Flowers of Thunbergia laurifolia
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Acanthaceae
Genus: Thunbergia
Species:
T. laurifolia
Binomial name
Thunbergia laurifolia

Thunbergia laurifolia, the laurel clockvine [1] or blue trumpet vine, is native to India [2] and the Indomalaya ecozone, the species occurs from Indochina to Malaysia. [3] It is locally known as kar tuau in Malaysia and rang chuet or rang jeud (รางจืด) in Thailand. [4]

Contents

Description

Thunbergia laurifolia leaves are opposite, heart-shaped with serrated leaf margin and taper to a pointed tip. Flowers are not scented and borne on pendulous inflorescences. The hermaphrodite flower is trumpet-shaped with a short broad tube, white outside and yellowish inside. The corolla is pale blue in colour with 5–7 petals, one larger than the others.

The plant flowers almost continuously throughout the year with flowers opening early in the morning and aborting in the evening of the same day. Carpenter bees are frequent visitors, creeping into the flowers for pollen and nectar while black ants are present probably as nectar scavengers. The plant develops a very tuberous root system. [5]

Uses

Cultivation

Thunbergia laurifolia is a popular ornamental plant in tropical gardens. It is a long-blooming vine in cultivation. Propagation is from stem cuttings or shoots from the tuberous roots. It is a fast-growing perennial herbaceous climber. It has become an exotic weed in many tropical countries.

Teas and medicinal

In Malaysia, juice from crushed leaves of T. laurifolia are taken for menorrhagia, placed into the ear for deafness, and applied for poulticing cuts and boils. [6] In Thailand, leaves are used as an antipyretic, as well as for detoxifying poisons. [7] Several Thai herbal companies have started producing and exporting rang jeud tea. [4]

Chemistry

Iridoid glucosides have been isolated from T. laurifolia. [7] Microwave-dried leaves displayed stronger antioxidant properties than fresh leaves. [4] The antioxidant properties of the infusion from microwave-dried leaves is higher than the commercial rang jeud tea from Thailand.[ citation needed ]

Invasive species

Thunbergia laurifolia can become an invasive species where escaping from ornamental garden uses into native habitats in supportive climates. Because it is a fast-growing perennial plant it has become an escaped exotic and noxious weed in many tropical countries The plant has become a weed found in the Cerrado vegetation of Brazil and in tropical areas of Australia.

See also

Related Research Articles

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<i>Thunbergia</i> genus of plants

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<i>Lamium album</i> species of plant

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<i>Thunbergia mysorensis</i> species of plant

Thunbergia mysorensis, also called Mysore trumpetvine or Indian clock vine, is a species of flowering plant in the family Acanthaceae. A woody-stemmed evergreen, this vine is native to southern tropical India. The specific epithet mysorensis is derived from the city of Mysore. Other vernacular names include brick & butter vine, lady's slipper vine, and dolls' shoes due to the flower shape and large size.

<i>Thunbergia alata</i> Species of plant

Thunbergia alata, commonly called black-eyed Susan vine, is a herbaceous perennial climbing plant species in the family Acanthaceae. It is native to Eastern Africa, and has been naturalized in other parts of the world. It is found in Cerrado vegetation of Brazil and Hawaii, along with eastern Australia and the southern USA in the states of Texas and Florida and in Puerto Rico.

<i>Tecoma stans</i> species of plant

Tecoma stans is a species of flowering perennial shrub in the trumpet vine family, Bignoniaceae, that is native to the Americas. Common names include yellow trumpetbush, yellow bells, yellow elder, ginger-thomas. Tecoma stans is the official flower of the United States Virgin Islands and the floral emblem of The Bahamas.

<i>Acanthus ebracteatus</i> species of plant

Acanthus ebracteatus is a species of shrubby herb that grows in the undergrowth of mangroves of south-east Asia. Common names include sea holly and holly mangrove.

<i>Ehretia microphylla</i> species of plant

Ehretia microphylla, synonym Carmona retusa, also known as the Fukien tea tree or Philippine tea tree, is a species of flowering plant in the borage family, Boraginaceae.

<i>Momordica foetida</i> species of plant

Momordica foetida is a perennial climbing vine native of tropical Africa, closely related to the bitter melon and balsam apple. Its species name ("bad-smelling") refers to its unpleasant smell. It was previously named M. morkorra and M. cordata (Cogn.)

<i>Linaria dalmatica</i> species of plant

Linaria dalmatica is a herbaceous plant native to western Asia and southeastern Europe that has become a weed in other areas. Its common names include Balkan toadflax, broadleaf toadflax, and Dalmatian toadflax.

<i>Thunbergia grandiflora</i> species of plant

Thunbergia grandiflora is an evergreen vine in the family Acanthaceae. It is native to China, India, Nepal, Indochina and Burma and widely naturalised elsewhere. Common names include Bengal clockvine, Bengal trumpet, blue skyflower, blue thunbergia, blue trumpetvine, clockvine, skyflower and skyvine.

<i>Thunbergia gregorii</i> species of plant

Thunbergia gregorii, commonly known as orange clockvine or orange trumpet vine, is a herbaceous perennial climbing plant species in the family Acanthaceae, native to East Africa and sometimes cultivated as an ornamental vine. The bright, pure all-orange flowers distinguish it from the related black-eyed Susan vine.

References

  1. "Thunbergia laurifolia". Natural Resources Conservation Service PLANTS Database. USDA . Retrieved 10 December 2015.
  2. Starr, F. et al. (2003). "Thunbergia laurifolia". http://www.hear.org/starr/hiplants/reports/pdf/thunbergia_laurifolia.pdf
  3. Schonenberger, J. (1999). "Floral structure, development and diversity in Thunbergia (Acanthaceae)". Botanical Journal of the Linnean Society. 130: 1–36. doi: 10.1111/j.1095-8339.1999.tb00779.x .
  4. 1 2 3 Chan, E.W.C., Lim, Y.Y. (2006). "Antioxidant activity of Thunbergia laurifolia tea" (PDF). Journal of Tropical Forest Science. 18 (2): 130–136.CS1 maint: multiple names: authors list (link)
  5. "Thunbergia: Blue trumpet vine". Natural Resources and Mines, Queensland. 2003.
  6. Burkill, I.H. (1966). "A Dictionary of the Economic Products of the Malay Peninsula. Volume II (I–Z)". Ministry of Agriculture and Cooperatives, Kuala Lumpur
  7. 1 2 Kanchanapoom, Tripetch; Kasai, Ryoji; Yamasaki, Kazuo (2002). "Iridoid glucosides from Thunbergia laurifolia". Phytochemistry. 60 (8): 769. doi:10.1016/S0031-9422(02)00139-5. PMID   12150796.