Children (8 direct children, 8 direct and indirect children):
Psychotria kirkii var. diversinodula
Psychotria kirkii var. hirtella
Psychotria kirkii var. mucronata
Psychotria kirkii var. nairobiensis
Psychotria kirkii var. swynnertonii
Psychotria kirkii var. tarambassica
Psychotria kirkii var. volkensii
Psychotria kirkii var. kirkii