BORNET, É., & C. FLAHAULT 1886–1888 Revision des Nostocacées hétérocystées contenues dans les principaux herbiers de France Annales des Sciences Naturelles, Botanique ser. 7, 3: 323–381 (1886a); ibid. 4: 343–373 (1886b); ibid. 5: 51–129 (1887); ibid. 7: 177–262 (1888). [Article 13.1(e) of the International Code of Botanical Nomenclature specifies January 1, 1886, as the arbitrary date of publication of the entire work.] IOC