Examination of original material for Navicula nigri De Notaris with some notes on the Erbario Crittogamico Italiano (1858–1885)

Abstract

The discovery of exsiccata no 632 of De Notaris’s Erbario Crittogamico Italiano now provides a lectotype for Sellaphora nigri (De Notaris) C.E. Wetzel & Ector, a common and widely distributed freshwater species originally described from the River Po (Italy). The lectotype takes precedence over the neotype previously designated by Wetzel and co-authors. New observations were made using light and scanning electron microscopy. A few notes on diatoms described in Erbario Crittogamico Italiano are briefly presented, along with illustrations of species present in the original protologue, including Nitzschia amphibia var. padana De Notaris nomen nudum.

Keywords:

• Sellaphora
• type material
• lectotype
• SEM
• exsiccata

Acknowledgements

Thanks to Line Le Gall for hosting the visit of DMW to the Muséum national d’Histoire naturelle, Paris (February 2017).

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Carlos E. Wetzel http://orcid.org/0000-0001-5330-0494

David M. Williams http://orcid.org/0000-0002-0584-307X

Notes

1. Padania is another name for the Po Valley, Pianura Padana in Italian, the locality of these specimens.

2. The name is preceded by an asterisk: ‘le poche specie dispensate nell’Erbario Crittogamico Italiano sono precedute da un asterisco’ (De Toni & Levi 1886, p. 125).

3. Named after the locality: ‘ … raccolti del Cav. Panizzi … a Ceriana presso San Remo’.

4. It is mentioned in AlgaeBase but with no further details other than the name.

Additional information

Funding

Some of this research received support from the SYNTHESYS Project http://www.SYNTHESYS.info/ which is financed by European Community Research Infrastructure Action under the FP7 Integrating Activities Programme, grant no [FR-TAF-6729].