Hendrik Claudius accompanied the expedition to the Copper Mountains as illustrator and naturalist.

The Codex Witsenii is a volume of annotated copies of watercolours of landscapes, plants, animals and insects from the expedition. These copies were commissioned by Nicolaes Witsen, Dutch statesman, mayor of Amsterdam and administrator of the Dutch East India Company.

The plants that are being investigated in the retracing of the route are those that were used by women. That they were used by women is not mentioned in the Codex, this knowledge is based on investigations from other sources.

Folio 71 / Acacia karroo

Folio 55 / Albuca maxima / Gambrij

Folio 53 / Aloidendron dichotomum

Folio 37 / Babiana tubulosa

Folio 39 / Cotyledon orbiculata

Folio 9 / Cynorhiza typica

Baroe : Folio 74 / Cyphia digitata

Folio 83 / Diospuros acocksii

Folio 82 / Euphorbia stellispina

Folio 17 / Euphorbia hamata

Folio 68 / Ficus cordata

Folio 78 / Fockea edulis / capensis

Folio 79 / Gladiolus speciosus

Folio 60 / Gomphocarpus fruticosus

Folio 70 / Gomphocarpus cancellatus

Folio 48 / Lachenalia hirta

t’iena : Folio 33 / Montinia caryphyllacea

Cargoe : Folio 57 & 31 / Nylandtia spinosa

Heijtame : Areé : Folio 50 / Pelargonium fulgidum

Thumma : Aree : Folio 76 / Pelargonium carnosum

Heijntame : Areé : t’neitjie : Folio 64 / Pelargonium incrassatum

Sâb, Son, San : Buchu : Folio 72 / Pteronia onobromoides

Canna : Kon : Folio 59 / Sceletium tortuosum

Kwarobe, Quaroube : Folio 80 / Veltheimia capensis

Chaby : Folio 58 / Wurmbea spicata

Folio 11 / Limeum africanum

Folio 13 / Conophytum minutum

Goree : Folio 41 / Aloe variegata

Folio 52 / Walleria gracilis

Folio 54 / Aloe khamiesensis

Folio 61 / Heeria argentea

Folio 62 / Freesia viridis

Chamare : Folio 63 / Chamarea capensis