1 record found in the Index Nominum Genericorum database.
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Helophytum Ecklon et Zeyher, Enum. 288. Jan 1836.
T.: H. natans (Thunberg) Ecklon et Zeyher (Crassula natans Thunberg)
Only this species on p. 288 was published in fasc. 2, the remaining 4 species on p. 289 were published in fasc. 3, Apr 1837; thus an original type.
PHAN.-CRASSULACEAE (10/104) 08 May 2018