What is "oncinotis"

Oncinotis is a genus of plant in the Apocynaceae family, first described as a genus in 1849. It is native to Africa, including Madagascar. the World Checklist of Selected Plant Families recognises 7 species:

1. Oncinotis glabrata ( Baill.) Stapf ex Hiern - tropical Africa from Liberia to Tanzania, south to Angola
2. Oncinotis gracilis Stapf - tropical Africa from Liberia to Central African Republic, south to Angola
3. Oncinotis hirta Oliv. - C Africa from Cameroon to Angola
4. Oncinotis nitida Benth. - W Africa from Liberia to Republic of Congo
5. Oncinotis pontyi Dubard - tropical Africa from Guinea to Uganda
6. Oncinotis tenuiloba Stapf - C + S Africa from Nigeria east to Sudan + Ethiopia, south to Cape Province
7. Oncinotis tomentella Radlk. - Madagascar

1. Oncinotis axillaris K.Schum. = Baissea multiflora A.DC.
2. Oncinotis campanulata K.Schum = Baissea campanulata (K.Schum.) de Kruif
3. Oncinotis melanocephala K.Schum. = Baissea myrtifolia (Benth.) Pichon
4. Oncinotis subsessilis K.Schum. = Baissea campanulata (K.Schum.) de Kruif
5. Oncinotis zygodioides K.Schum. = Baissea zygodioides (K.Schum.) Stapf