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Group:

Eudicot

Estimated genome size:

Up to 18 m tall

Size:

Up to 18 m tall

Distribution:

The species is native to large parts of sub-Saharan Africa (including, but not limited to South Africa, Namibia, Botswana, Zimbabwe). In South Africa, it is found in Limpopo, Mpumalanga, KwaZulu Natal, North West and some parts of Northern and Eastern Cape.

PromethION Sequencing Report:

Output:

86.86 Gigabases

Approximate N50:

17.18 kilobases

Draft Genome Assembly Statistics:

Genome Length:

0.39 Gigabases

BUSCO completeness score (single and duplicated genes):

98.8% [S: 97.4%, D: 1.4%]

Importance:

Sclerocarya birrea is an economically and culturally important African tree, valued for products such as Amarula Cream Liqueur, cosmetic oil, and its traditional medicinal uses, while also supporting rural livelihoods. Its drought tolerant and deep rooting system make it important in agroforestry and ecosystem resilience. Sequencing its genome will improve understanding of its biology, support conservation and breeding efforts, and enhance sustainable commercial development.

Sample Contributor contact details:

Prof. Eshchar Mizrachi
University of Pretoria

Group:

Eudicot

Estimated genome size:

Size:

10 - 15 m

Distribution:

Eastern Cape, KwaZulu-Natal, Limpopo, Mpumalanga and Western Cape Provinces of South Africa, Aldabra, Comoros, Kenya, Mozambique, Somalia, Swaziland, Tanzania, Zimbabwe in Africa.

PromethION Sequencing Report:

Output:

112.02 Gigabases

Approximate N50:

13.89 kilobases

Assembly N50:

22 007.81 kilobases

Contig number:

1 743

Draft Genome Assembly Statistics:

Assembler used:

Hifiasm

Genome Length:

1.57 Gigabases

BUSCO completeness score (single and duplicated genes):

100.0% [S: 1.9%, D: 98.1%]

BUSCO database:

viridiplantae

Sideroxylon inerme

White Milkwood

Species Card Details

Importance:

The white milkwood is a protected South African tree found along the southern and eastern coasts, where it dominates parts of the Western Cape’s coastal forests. Its coppicing growth form may result in low genetic variability in isolated populations, making them vulnerable to rapid climatic change and highlighting the need for population genetic studies. The species also holds strong cultural significance, with historic gathering trees such as the “Post Office Tree” in Mossel Bay and the “Treaty Tree” in Woodstock, Cape Town.

Sample Contributor contact details:

Paula Strauss
Grootbos Foundation

Date Published:

2026-02-10

Photo credit:

© M. van Rooyen

Flora

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