top of page

Species Card Details

Widdringtonia wallichii

Clanwilliam Cedar

Species Card Photograph

Group:

Gymnosperm

Size:

15 meters

Distribution:

Narrowly confined to the Cederberg, in the Western Cape.

PromethION Sequencing Report:

Output:

406.93 Gigabases

Approximate N50:

18.79 kilobases

Assembly N50:

325 649.65 kilobases

Contig number:

1871

Draft Genome Assembly Statistics:

Assembler used:

Hifiasm

Genome Length:

9.26 Gigabases

BUSCO completeness score (single and duplicated genes):

96.2% [S: 92.9%, D: 3.3%]

BUSCO database:

viridiplantae

Importance:

The Clanwilliam cedar, an iconic conifer of the Cederberg, is critically endangered. Its assembled genome will serve as a reference for mapping short-read sequences from trees of different ages and locations, allowing us to measure genetic diversity across space and time. These genetic insights will help guide seed-collection strategies and maximise genetic diversity in restoration efforts in the Cederberg.

Sample Contributor contact details:

Nicola Illing
University of Cape Town

Date Published:

2026-03-17

Photo credit:

© N. Illing

Flora

bottom of page