Mikael Heggelund Foslie (M.Foslie) (1855–1905) published 69 papers between 1887–1909. During this time he increased the number of species and forms (of corallines) from 175 to 650 (Irvine and Chamberlain, 1994).[19] After his death his collection of specimens was purchased by the Museum of the Royal Norwegian Society for Sciences and Letters (Thor et al., 2005) [31] and there is a small collection of his in the Ulster Museum Herbarium: (Collection No. 42) entitled: Algae Norvegicae (Ulster Museum Herbarium catalogue (BEL): F10319–F10334). F.Heydrich also described 84 taxa and was a bitter foe of Foslie.