| Thunbergia laurifolia | |
|---|---|
 | |
| Flowers of Thunbergia laurifolia | |
Scientific classification  | |
| 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 and Thailand [2] and the Indomalayan realm, the species occurs from Indochina to Malaysia. [3]
Thunbergia laurifolia leaves are opposite, heart-shaped with serrated leaf margin and taper to a pointed tip. This species is very similar in appearance to T. grandiflora , but has longer, thinner leaves and its young stems and leaves are hairless.
The 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. Plants flower 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. [4]
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.
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. [5] In Thailand, leaves are used as an antipyretic, as well as for detoxifying poisons. [6] It is locally known as akar tuau in Malaysia and rang jeud (รางจืด) in Thailand. Several Thai herbal companies have started producing and exporting rang jeud tea. [7]
T. laurifolia is used in Thailand for patients in drug addiction treatment, and two studies on lab rats show T. laurifolia may stimulate dopamine production. [8] [9]
Iridoid glucosides have been isolated from T. laurifolia. [6] Microwave-dried leaves displayed stronger antioxidant properties than fresh leaves. [7] The antioxidant properties of the infusion from microwave-dried leaves is higher than the commercial rang jeud tea from Thailand.[ citation needed ]
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.
Honeysuckles are arching shrubs or twining vines in the genus Lonicera of the family Caprifoliaceae. It includes 158 species native to northern latitudes in North America, Eurasia, and North Africa. Widely known species include Lonicera periclymenum, Lonicera japonica and Lonicera sempervirens. L. japonica is a highly invasive species considered a significant pest in parts of North America, Europe, South America, Australia, and Africa.
Acanthaceae is a family of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes. Only a few species are distributed in temperate regions. The four main centres of distribution are Indonesia and Malaysia, Africa, Brazil, and Central America. Representatives of the family can be found in nearly every habitat, including dense or open forests, scrublands, wet fields and valleys, sea coast and marine areas, swamps, and mangrove forests.
Lobelia is a genus of flowering plants in the family Campanulaceae comprising 415 species, with a subcosmopolitan distribution primarily in tropical to warm temperate regions of the world, a few species extending into cooler temperate regions. They are known generally as lobelias.
Plantago lanceolata is a species of flowering plant in the plantain family Plantaginaceae. It is known by the common names ribwort plantain, narrowleaf plantain, English plantain, ribleaf, lamb's tongue, and buckhorn. It is a common weed on cultivated or disturbed land.
Passiflora quadrangularis, the giant granadilla, barbadine (Trinidad), grenadine (Haiti), giant tumbo or badea, is a species of plant in the family Passifloraceae. It produces the largest fruit of any species within the genus Passiflora. It is a perennial climber native to the Neotropics.
Euphorbia heterophylla, also known under the common names of Mexican fireplant, painted euphorbia, Japanese poinsettia, paintedleaf, painted spurge and milkweed, is a plant belonging to the Euphorbiaceae or spurge family.
Passiflora incarnata, commonly known as maypop, purple passionflower, true passionflower, wild apricot, and wild passion vine, is a fast-growing perennial vine with climbing or trailing stems. A member of the passionflower genus Passiflora, the maypop has large, intricate flowers with prominent styles and stamens. One of the hardiest species of passionflower, it is both found as a wildflower in the southern United States and in cultivation for its fruit and striking bluish purple blooms.
Thunbergia is a genus of flowering plants in the family Acanthaceae. It includes 150 species native to tropical and subtropical regions of sub-Saharan Africa, Madagascar, southern Asia, New Guinea, and Australia. Thunbergia species are vigorous annual or perennial vines and shrubs growing to 2–8 m tall. The generic name honours the Swedish naturalist Carl Peter Thunberg (1743-1828).
Viburnum tinus, the laurustinus, laurustine or laurestine, is a species of flowering plant in the family Adoxaceae, native to the Mediterranean area of Europe and North Africa. Laurus signifies the leaves' similarities to bay laurel.
Acanthus is a genus of about 30 species of flowering plants in the family Acanthaceae, native to tropical and warm temperate regions, with the highest species diversity in the Mediterranean Basin and Asia. This flowering plant is nectar producing and depends on butterflies, such as Anartia fatima, and other nectar feeding organisms to distribute its pollen. Common names include Acanthus and bear's breeches. The generic name derives from the Greek term ἄκανθος (akanthos) for Acanthus mollis, a plant that was commonly imitated in Corinthian capitals.
Etlingera elatior is a species of herbaceous perennial plant in the family Zingiberaceae; it is native to Indonesia, Thailand, Malaysia and New Guinea.
Lamium album, commonly called white nettle or white dead-nettle, is a flowering plant in the family Lamiaceae. It is native throughout Europe and Asia, growing in a variety of habitats from open grassland to woodland, generally on moist, fertile soils.
Thunbergia mysorensis, the Mysore trumpetvine or lady's slipper 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.
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.
Styphnolobium japonicum, the Japanese pagoda tree is a species of deciduous tree in the subfamily Faboideae of the pea family Fabaceae.
Mikania micrantha is a tropical plant in the family Asteraceae; known as bitter vine, climbing hemp vine, or American rope. It is also sometimes called mile-a-minute vine.
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.
Thunbergia erecta, commonly known as the bush clock vine or king's mantle, is a vibrant, evergreen species of shrub in the family Acanthaceae. Native to the forest zone stretching from Guinea-Bissau to western Cameroon, it has found significant cultivation worldwide due to its ornamental appeal and versatility. The plant is particularly known for its erect or scandent growth habit, reaching a notable height of up to five meters or more. This robust shrub displays a fascinating range of pale to dark violet-purple flowers that contribute to its visual appeal and broad popularity. Each flower measures between 5.0 to 7.5 cm in length, hosting a stark white tube at their core. This striking color contrast lends an undeniable charm to the plant, making it a favored choice in various garden settings and landscapes.
Dolichandra unguis-cati, commonly known as cat's claw creeper, funnel creeper, or cat's claw trumpet, is a rapidly growing climbing vine belonging to the family Bignoniaceae. It affects all plant layers of the forest ecosystem spreading rapidly both vertically and horizontally.
Thunbergia grandiflora is an evergreen vine in the family Acanthaceae. It is native to China, India, Nepal, Bangladesh, Indochina and Myanmar and widely naturalised elsewhere. Common names include Bengal clockvine, Bengal trumpet, blue skyflower, blue thunbergia, blue trumpetvine, clockvine, skyflower and skyvine.
