Notes

Irmscher (loc. cit.) divided B. sutherlandii into four varieties, only one of which (var. latior) was represented in the F.Z. area. var.subcuneata, apparently confined to Tanzania, was distinguished from the S. African var. sutherlandii by having a slightly different leaf shape and probably by the fact that the two taxa had isolated distributions. Plants belonging to “var. subcuneata ” have since been found also in N. Malawi and N. Mozambique, and although there is still a disjunction between these populations and those of “var. sutherlandii ”, they are phenetically so similar that it seems best to treat them as a single taxon—subsp. sutherlandii. Subsp. latior is very distinct from the type subspecies in the F.Z. area, but in S. Africa these taxa tend to merge.The Tanzanian var. rubrifolia Irmsch., so far known only from the type (from the Njombe Distr.), has small, ovate, reddish leaves. It is thus superficially similar to B. rumpiensis, a close geographical neighbour. However, the flower and fruit characters of these two species separate them quite easily.

Notes

Irmscher (loc. cit.) divided B. sutherlandii into four varieties, only one of which (var. latior) was represented in the F.Z. area. var.subcuneata, apparently confined to Tanzania, was distinguished from the S. African var. sutherlandii by having a slightly different leaf shape and probably by the fact that the two taxa had isolated distributions. Plants belonging to “var. subcuneata ” have since been found also in N. Malawi and N. Mozambique, and although there is still a disjunction between these populations and those of “var. sutherlandii ”, they are phenetically so similar that it seems best to treat them as a single taxon—subsp. sutherlandii. Subsp. latior is very distinct from the type subspecies in the F.Z. area, but in S. Africa these taxa tend to merge.The Tanzanian var. rubrifolia Irmsch., so far known only from the type (from the Njombe Distr.), has small, ovate, reddish leaves. It is thus superficially similar to B. rumpiensis, a close geographical neighbour. However, the flower and fruit characters of these two species separate them quite easily.

Notes

Irmscher (loc. cit.) divided B. sutherlandii into four varieties, only one of which (var. latior) was represented in the F.Z. area. var.subcuneata, apparently confined to Tanzania, was distinguished from the S. African var. sutherlandii by having a slightly different leaf shape and probably by the fact that the two taxa had isolated distributions. Plants belonging to “var. subcuneata ” have since been found also in N. Malawi and N. Mozambique, and although there is still a disjunction between these populations and those of “var. sutherlandii ”, they are phenetically so similar that it seems best to treat them as a single taxon—subsp. sutherlandii. Subsp. latior is very distinct from the type subspecies in the F.Z. area, but in S. Africa these taxa tend to merge.The Tanzanian var. rubrifolia Irmsch., so far known only from the type (from the Njombe Distr.), has small, ovate, reddish leaves. It is thus superficially similar to B. rumpiensis, a close geographical neighbour. However, the flower and fruit characters of these two species separate them quite easily.