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Thunbergia alata.JPG
Flowers of Thunbergia alata
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Acanthaceae
Subfamily: Thunbergioideae
Genus: Thunbergia
Retz. [1]
Synonyms [1]

FlemingiaRoxb. ex Rottler

Thunbergia is a genus of flowering plants in the family Acanthaceae, native to tropical regions of Africa, Madagascar and southern Asia. 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).


Its members are known by various names, including thunbergias and clockvine. Thunbergia on its own usually refers to Thunbergia grandiflora , while Thunbergia alata is often known as black-eyed Susan vine or just black-eyed Susan (not to be confused with other flowers called black-eyed Susan). Orange clockvine is the name of Thunbergia gregorii .

Thunbergias are frequent garden escapes, becoming invasive species; T. grandiflora, T. fragrans, and T. laurifolia are considered weeds in Australia. [2]

Selected species

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Acanthaceae family of plants

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.

<i>Vigna</i> genus of plants

Vigna is a genus of flowering plants in the legume family, Fabaceae, with a pantropical distribution. It includes some well-known cultivated species, including many types of beans. Some are former members of the genus Phaseolus. According to Hortus Third, Vigna differs from Phaseolus in biochemistry and pollen structure, and in details of the style and stipules.

<i>Cassia</i> (genus) genus of plants

Cassia is a genus of flowering plants in the legume family, Fabaceae, and the subfamily Caesalpinioideae. Species are known commonly as cassias. Cassia is also the English common name of some species in the genus Cinnamomum of the family Lauraceae. Species of the genera Senna and Chamaecrista were previously included in Cassia. Cassia now generally includes the largest species of the legume subtribe Cassiinae, usually mid-sized trees.

<i>Olea</i> genus of plants

Olea is a genus of about 40 species in the family Oleaceae, native to warm temperate and tropical regions of the Middle East, southern Europe, Africa, southern Asia, and Australasia. They are evergreen trees and shrubs, with small, opposite, entire leaves. The fruit is a drupe. Leaves of Olea contain trichosclereids.

<i>Terminalia</i> (plant) genus of plants

Terminalia is a genus of large trees of the flowering plant family Combretaceae, comprising around 100 species distributed in tropical regions of the world. This genus gets its name from Latin terminus, referring to the fact that the leaves appear at the very tips of the shoots.

<i>Ehrharta</i> genus of plants

Ehrharta is a genus of plants in the grass family.

<i>Senna</i> (plant) genus of plants

Senna, the sennas, is a large genus of flowering plants in the legume family. This diverse genus is native throughout the tropics, with a small number of species in temperate regions. The number of species is estimated to be from about 260 to 350. The type species for the genus is Senna alexandrina. About 50 species of Senna are known in cultivation.

<i>Ruellia</i> genus of plants

Ruellia is a genus of flowering plants commonly known as ruellias or wild petunias. They are not closely related to petunias (Petunia) although both genera belong to the same euasterid clade. The genus was named in honor of Jean Ruelle, herbalist and physician to Francis I of France and translator of several works of Dioscorides.

<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>Thunbergia laurifolia</i> species of plant

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

<i>Asystasia</i> genus of plants

The genus Asystasia belongs to the family Acanthaceae and comprises approximately 70 species found in the tropics, including the weedy species Asystasia gangetica.

<i>Uvaria</i> genus of plants

Uvaria is a genus of flowering plants in the soursop family, Annonaceae. The generic name uvaria is derived from the Latin uva meaning grape, likely because the edible fruit of some species in the genus resemble grapes.

<i>Daviesia</i> genus of plants

Daviesia, commonly known as Bitter-peas, is a large genus of flowering plants in the legume family. They are native to Australia, with a centre of diversity in Western Australia.

<i>Eranthemum</i> Genus of plants

Eranthemum is a genus of plants in the family Acanthaceae.

<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>Phanera</i> genus of plants

Phanera is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Cercidoideae. This genus differs from Bauhinia in being vines or lianas, generally with tendrils and a lobed rather than spathaceous calyx, and from Schnella in having only three fertile stamens rather than ten, and being native to the Indomalayan realm and the Australasian realm rather than the Americas. The subsection Corymbosae was recently segregated into a new genus, Cheniella.

<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.


  1. 1 2 "Genus: Thunbergia Retz". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Archived from the original on 2012-10-09. Retrieved 2010-10-30.
  2. Weeds Australia, National Weeds Strategy, retrieved 27 March 2015
  3. "Red List of South African Plants". SANBI. Retrieved 7 January 2019.
  4. 1 2 "GRIN Species Records of Thunbergia". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2015-09-24. Retrieved 2010-10-30.