1 record found in the Index Nominum Genericorum database.
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Isothylax Baillon, Bull. Mens. Soc. Linn. Paris 2: 877. 5 Nov 1890; Index: 24. 1898.
T.: I. heteromorpha (Baillon) Baillon (Sphaerothylax heteromorpha Baillon)
It is doubtful that the first reference constitutes valid publication of the genus. It was definitely accepted as a genus in 1898.
According to Baillon, Bull. Mens. Soc. Linn. Paris 2: 947. 1891, the issues were printed in advance of the sessions.
PHAN.-PODOSTEMACEAE (75) 11 Jan 2007