Kabuyea hostifolia is a member of the Tecophilaeaceae, which is a relatively ancient lineage in the monocots. The family diverged about 108 million years ago. In present-day, members of the family can be found in Africa, Chile and a single species in California (Odontostomum hartwegii). Kabuyea hostifolia is native only to Mozambique and Tanzania in central eastern Africa. Ton notes the local name for the species in the Macua language is ikotcho.
Ton also suggests that the health and size for each unit of the series of corms (swollen underground stems) reflects annual growing conditions, in much the same way that the pattern of wood deposition in tree rings reflects ecological factors. I'm particularly intrigued by what occurred six years ago where the corm is narrower and / or smaller on three of the plants.
According to the Flora Zambesiaca, Kabuyea hostifolia is a species of "shady damp places in riverine forest or woodland 0-700 m". The IUCN Red List details a little bit more about the habitat and ecology of the species (and also ranks the species as "least concern", i.e., it is abundant and stable). Ton notes that it is a survival food plant for indigenous peoples, but the corms require much preparation before becoming edible. If unprepared, the corms are poisonous.