| Author||E. Drenth|
|Journal||Flora Malesiana - Series 1, Spermatophyta|
|Abstract||The affinity of Taccaceae has been subject to diverse opinions, many authors favouring a place near Dioscoreaceae, but in my view the unisexual flowers, the branching habit, the racemose inflorescences and the 3-celled ovary in that family make this not very probable. I prefer to share the opinion of those who seek its affinity to Amaryllidaceae, because of the habit, the scape-shaped inflorescence, the umbellate flower disposition with an involucre, and the fact that in that family also occasionally a 1-celled ovary is found. Neither the systematic anatomy nor the inadequately known phytochemistry or chromosome number are sufficiently diagnostic to support opinions on affinity.|
Before my precursory revision (1972) two genera were distinguished, viz Tacca and a monotypic genus, Schizocapsa (S. plantaginea HANCE) ranging from Thailand to Kweichow, which differs only by having dehiscent capsular fruits instead of the indehiscent ones in Tacca. I have seen since that this species has dehiscing fruit indeed, which removes my doubt (l.c. 370) on this point. I have tried to see whether there may be a tardy dehiscence in Tacca by keeping fruit stalks of T. chantrieri in erect position in the Leyden greenhouse, but this had no result. I see no reason to keep Schizocapsa as a separate genus or infrageneric taxon.
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