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Taxon: Genus Hassallia M.J. Berkeley ex Bornet & Flahault (1886), nom. illeg. (alga)
 Entity: 

Authorship

SN2000 author citation:  M.J. Berkeley, in A.H. Hassall, 1845 ex É. Bornet & C. Flahault, 1887[1886], nom. bot. nov., nom. praeocc.
Unavailable original name:  Berkeley, 1845. In Hassall, History of the British fresh-water Algæ 1: 231. [nom. praeinit., pro parte].
Original name, rank & spelling:  Bornet, E. & Flahault, C. 1887[1886]. Ann. Sci. Nat. Bot. (7) 5 (1): 82 (key), 115 ("Berkeley"). ≡

Attributes

Botanical name, by original use (: nom. bot. nov.) Ref: LPSN, 2020-present. LPSN: [23 Feb 2026].
Botanical name (: nom. bot.) [ICBN/ICN] Ref: E.R. Farr & G. Zijlstra (eds.), 1996-present. ING: 6 Jan 2017.
Later homonym (exact spelling) (nom. illeg.[: praeocc.]) [IC[B]N: Art. 53.1] Ref: E.R. Farr & G. Zijlstra (eds.), 1996-present. ING: 6 Jan 2017 ("non V. B. A. Trevisan 1848").

Homonyms

Senior homonym: Hassallia (Genus) Trevis. (1848), nom. illeg. Ref: E.R. Farr & G. Zijlstra (eds.), 1996-present: 6 Jan 2017.

Synonyms

Accepted name: Tolypothrix (Genus) Kützing ex Bornet and Flahault 1886 Ref: LPSN, 2020-present: [23 Feb 2026] ("heterotypic").
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Last updated: 28 Aug 2026