''Tapinanthus rubromarginatus'', commonly known as red mistletoe, is a species of

plant Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclud ...

in the family

Loranthaceae Loranthaceae, commonly known as the showy mistletoes, is a family of flowering plants. It consists of about 75 genera and 1,000 species of woody plants, many of them hemiparasites. The three terrestrial species are ''Nuytsia floribunda'' (the W ...

. The leaf margins are red as reflected by the specific name ''rubro-'', meaning "red", and ''marginatus'' meaning "margin".

Range and hosts

It is native to northern

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

, northwards of the

Vaal The Vaal River ( ; Khoemana: ) is the largest tributary of the Orange River in South Africa. The river has its source near Breyten in Mpumalanga province, east of Johannesburg and about north of Ermelo and only about from the Indian Ocean. I ...

and

Pongola River The Phongolo River is a river in South Africa. It is a tributary of the Maputo River. It rises near Utrecht in northern KwaZulu-Natal, flows east through Pongolo, is dammed at Pongolapoort, and crosses the Ubombo Mountains; then it flows north ...

s, and to the uplands of western and northern

Eswatini Eswatini ( ; ss, eSwatini ), officially the Kingdom of Eswatini and formerly named Swaziland ( ; officially renamed in 2018), is a landlocked country in Southern Africa. It is bordered by Mozambique to its northeast and South Africa to its no ...

. The host plants include ''

Protea caffra ''Protea caffra'' (sometimes called the common protea), native to South Africa, is a small tree or shrub which occurs in open or wooded grassland, usually on rocky ridges. Its leaves are leathery and hairless. The flower head is solitary or in cl ...

'', ''

Protea roupelliae ''Protea roupelliae'' is a species of ''Protea'' in the large family Proteaceae, and was named to commemorate Arabella Elizabeth Roupell (1817-1914) who spent two years in Cape Town and painted local flowers for her own pleasure. This species ...

'' and ''

Faurea saligna ''Faurea saligna'' is a graceful, semi-deciduous tree of the family Proteaceae growing to about 10 metres, or up to 20 metres under forest conditions. Found from tropical Africa south to the Transvaal, Swaziland and Natal, often in large commun ...

''.

Description

250px, left, Sunbird feeding on ''T. rubromarginatus'' nectar, and assisting in pollination. This is a deciduous, semi-parasitic aerial shrub, that attaches itself to the host plant by

haustoria In botany and mycology, a haustorium (plural haustoria) is a rootlike structure that grows into or around another structure to absorb water or nutrients. For example, in mistletoe or members of the broomrape family, the structure penetrates t ...

. The leaves are clustered in groups, and have narrow, dark red edges. The pinkish red flowers appear in spring, and the berries are similarly coloured.

Reproduction

Sunbirds are attracted by the flower nectar and perform most of the pollination. The pistil and anthers make contact with the sunbird's crown feathers, as it probes the perianth tube. Several species of birds eat the sweet fruit, the seeds of which are coated with a thick, sticky glue. This glue sticks to the beak, and is wiped off on another branch, where the seed is deposited and eventually germinates.

References

{{Taxonbar, from=Q15355575 rubromarginatus Taxa named by Adolf Engler Flora of Africa