It is landrace:
Landrace Cannabis Varieties of South Africa
Durban Poison, a commercially-bred strain with Durban landrace parentage, is a common sight in US dispensaries and Amsterdam coffeeshops alike (C.P.)
Durban is undoubtedly the most famous of South Africa’s landrace varieties, and was once a common sight in Amsterdam coffeeshops, although currently any “South African” cannabis on sale in most establishments is more likely to be Swazi in origin.
Durban is a tall, leggy sativa with thin, sparse leaves and few branches. The flowering period is long, as with most South and East African sativas, and the effect is uplifting, cerebral and somewhat psychedelic in larger doses. As well as Durban, there are several other South African landraces worth noting.
From the Transkei region, the Rooibaard (Redbeard) is highly prized, and is another tall, skinny sativa with distinctive red hairs and a reddish hue to the resin produced from it. The KwaZulu is another, this time hailing from the northern uplands of the Drakenburg mountain range; this sativa has a shorter flowering time of around 9-10 weeks as it has adapted to a mountainside existence, and has also developed excellent mould and disease resistance.