Helgi Jónsson

1867 – 1925

• The marine algal vegetation
• A contribution to the knowledge of the marine algae of Jan Mayen
• Bidrag til Øst-Islands flora
• Grasgarður í Reykjavík
• Island
• Ríkjabyltingarnar [efter Helga Jónsson]
• Stefán Stefánsson
• Strandengen i Sydvest-Island
• Studier over Øst-Islands Vegetation
• Sæþörungar
• The Marine algae of Iceland