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The species of Geissorhiza (Iridaceae) of Thunberg's herbarium (Uppsala, Sweden)
Author(s) -
Goldblatt Peter
Publication year - 1983
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1983.tb01450.x
Subject(s) - typification , herbarium , biology , nomenclature , botany , iridaceae , sensu , genus , species name , crocus , taxonomy (biology)
The complex typification and nomenclature of the eight species of Geissorhiza based on Thunberg's Cape collections, is reviewed critically in preparation for a complete revision of the genus. These species, initially assigned to Ixia , were described by Thunberg and von Linné fil., founded on collections of twelve different species. Some well known species require changes to their nomenclature; G. rochensis sensu Ker becomes G. radians (Thunb.) Goldbl.; while Ixia scillaris Thunb. nom. illeg., based on three different species is lectotypified and shown to be G. scillaris Spreng., a species quite distinct from G. juncea , with which it has often been confused. Arguments for considering the name G. secunda illegitimate are reviewed. The species long known by this epithet must be called G. aspera Goldbl. Lectotypes have been designated for G. monanthos, G. radians, G. scillaris and G. setacea , none of which have been satisfactorily typified before.