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Species Card Details

Portulacaria pygmaea

Pygmy porkbush

Species Card Photograph

Group:

Eudicot

Size:

10 cm

Distribution:

Portulacaria pygmaea is restricted to the arid Richtersveld region of the Northern Cape, occurring along the lower Orange River Valley.

PromethION Sequencing Report:

Output:

33.45 Gigabases

Approximate N50:

13.19 kilobases

Assembly N50:

11 377.66 kilobases

Contig number:

810

Draft Genome Assembly Statistics:

Assembler used:

Hifiasm

Genome Length:

0.84 Gigabases

BUSCO completeness score (single and duplicated genes):

99.5% [S: 7.3%, D: 92.2%]

BUSCO database:

viridiplantae

Importance:

This species is listed as Critically Endangered on the SANBI Red List. It is has lost most of its habitat to mining and is being poached heavily and needs critical conservation intervention. It is a relative of Portulacaria afra (spekboom) which has important ecological and economic value. P. pygmaea is a Richtersveld endemic with a complete absence of cytogenetic or genomic data, making it a highly valuable candidate for foundational genetic, ecological, and conservation research into southern-African biodiversity.

Sample Contributor contact details:

Annerie Senekal
Stellenbosch University Botanical Garden

Date Published:

2026-06-08

Photo credit:

© N. Helme

Flora

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