M'Calla, William (1814-1849)
ALGAE HIBERNICAE.
Volume I, numbers 1-50. Volume II, number 1-50. Dublin (Oldham), 1848.
Specimens are dried on paper or glass.

Berkeleya fragilis Greville
Ireland (Galway) Roundstone Bay
McCalla 14

Schizonema quadripunctatum C. Agardh
Ireland (Galway) Roundstone Bay
McCalla 34