With 18 species Stylochaeton is a small genus. It is also small in taxonomic attention and a revision is badly needed. Exclusively African, Stylochaeton species are inconspicuous geophytes with a thick or more slender rhizome and often heavily swollen fleshy roots. The inflorescences are usually half buried in the soil. The individual flowers are unisexual but they possess a perianth (a bunch of structures surrounding the sexual organs but neither a corolla nor a calyx). The spathe base is fully closed and the spathe itself often very thick walled. The immediate relationship of Stylochaeton to any of the other aroid genera remains unclear.
Bogner, J. 1984. A new Stylochaeton species (Araceae) from East Africa. Pl. Syst. Evol. 144: 77 - 81.
Malaisse,F. & P. Bamps. 1994. Revision du genre Stylochaeton (Araceae) du Shaba (Zaire). Bull. Jard. Bot. Natl. Belg. 36: 69 - 79. (in French)
The list below is based on Govaerts & Frodin, 2002, World checklist and bibliography of Araceae but I have stripped the list of synonyms because the species are so rare in cultivation anyway and extra names would not contribute much. So the list only contains the priorable names and the most up-to-date ideas about the taxonomy.
Stylochaeton angolensis Engl.
Stylochaeton bogneri Mayo
Stylochaeton borumensis N.E. Br.
Stylochaeton crassispathus Bogner
Stylochaeton cuculliferus Peter
Stylochaeton euryphyllus Mildbr.
Stylochaeton grandis N.E. Br.
Stylochaeton hypogaeus Lepr.
Stylochaeton kerensis N.E. Br.
Stylochaeton kornasii Malaisse & Bamps
Stylochaeton lancifolius Kotschy & Peyr.
Stylochaeton milneanus Mayo
Stylochaeton natalensis Schott
Stylochaeton oligocarpus Riedl
Stylochaeton puberulus N.E. Br.
Stylochaeton salaamicus N.E. Br.
Stylochaeton zenkeri Engl.
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