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Family: Convolvulaceae (morning glory, Sweet potato family)

Life > eukaryotes > Archaeoplastida > Chloroplastida > Charophyta > Streptophytina > Plantae (land plants) > Tracheophyta (vascular plants) > Euphyllophyta > Lignophyta (woody plants) > Spermatophyta (seed plants) > Angiospermae (flowering plants) > Eudicotyledons > Order: Solanales

 

Ipomoea 

Common Morning Glory Ipomoea purpurea, alongside suburban road in Cape Town. Originates from Tropical America.

Convolvulus 

Convolvulus mauritanicus in the Company Gardens, Cape Town. Native to North Africa.

 

There are about 57 genera and 1625 species worldwide, with 17 genera and 130 species native to southern Africa, two genera and 13 species naturalised and an additional four genera 34 species cultivated in the region.

Genera native to southern Africa

List from Welman (2000).

Astripomoea

About 12 species, native to Africa, with three species native to southern Africa.

 

Bonamia

About 40 species, widespread in tropics, with three species native to southern Africa.

 

Convolvulus

About 250 species, found worldwide, with 13 species indigenous and one species naturalised in southern Africa, with an additional three species cultivated in the region. Differs from Ipomoea in having the stigma divided.

Convolvulus mauritanicus

Cressa

One species native to southern Africa - Cressa cretica (recorded from Mozambique).

 

Cuscuta (dodders)

Parasites. About 140 species, widespread in warmer regions, with 12 species native to southern Africa. In addition, three species are naturalised in the region, two of which are declared Category 1 invasive plants in South Africa.

 

Evolvulus

About 100 species, native mainly to tropical America but with two species native to southern Africa and additional species cultivated in the region.

 

Falkia

The three species are native to Africa, with two of them occurring in southern Africa.

 

Hewittia

One species, Hewittia malabarica, which occurs in the tropics and subtropics worldwide.

 

Ipomoea (Morning Glory and Sweet Potato genus)

About 500 species, found worldwide in tropical and subtropical regions, with 70 species native to southern Africa, six species naturalised and an additional 23 species cultivated in the region. Differs from Convolvulus in not having stigma divided.

Ipomoea purpurea (Common Morning Glory)

Jacquemontia

About 120 species, occurring predominantly in America but also found in tropical Africa, Asia and Australia. Jacquemontia tamnifolia is the only species native to southern Africa. See Flora of Zimbabwe.

 

Lepistemon

One species native to southern Africa - Lepistemon owariense.

 

Merremia

About 80 species, worldwide in warm regions, with 13 species native to southern Africa and two species cultivated.

 

Paralepistemon

One species: Paralepistemon shirensis, distributed over central and subtropical Africa, extending into Limpopo province.

 

Seddera

About 20 species, native to Africa, Madagascar, the Arabian Peninsula and India, with three species found in southern Africa.

 

Stictocardia

About 12 species, found in tropical regions, with one species, Stictocardia laxiflora, native to southern Africa. In addition, Strictocardia beraviensis is cultivated in the region.

 

Turbina

Two species native to southern Africa.

 

Xenostegia

The two species are distributed over the Old World tropics, with one species, Xenostegia tridentata (see Flora of Zimbabwe), native to southern Africa.

 

Genera naturalised in southern Africa

List from Welman (2000).

Calystegia

About 25 species, native to tropical and temperate regions, with two species naturalised in southern Africa.

 

Dichondra

About four or five species, native mainly to America. Dichondra micrantha is naturalised in southern Africa. See Flora of Zimbabwe.

 

Other genera, cultivated in southern Africa

List from Glen (2002).

Argyreia nervosa (Elephant climber)

Native to India.

 

Mina lobata

Native to Mexico.

 

Operculina turpethum

Native to from tropical Africa to Polynesia.

 

Porana paniculata (Bridal bouquet)

Native to India.

 

Publications

  • Welman, W.G. 2000. Convolvulaceae. In: Seed Plants of Southern Africa (ed. O.A. Leistner). Strelitzia 10: 231-234. National Botanical Institute, Pretoria.

  

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