DISTINCTION OF SOUTH-AMERICAN HAPLOGLOIA-ANDERSONII AND CHORDARIA-LINEARIS (PHAEOPHYCEAE) BASED ON DIFFERENCES IN SEXUAL REPRODUCTION, MORPHOLOGY, ECOPHYSIOLOGY, AND DISTRIBUTION

• Main Author: PETERS, AF
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1992
• Subjects: ANTARCTICA; BIOGEOGRAPHY; CHORDARIA-LINEARIS; HAPLOGLOIA-ANDERSONII; LIFE HISTORY; MORPHOLOGY; PHAEOPHYCEAE; SOUTH-AMERICA; TAXONOMY; Cape Horn; Hooker; Pacific; Patagonia; Antarc*; Antarctica; Macquarie Island
• Online Access: http://hdl.handle.net/11370/5e92b09b-4dcf-4af9-a474-5699608e7223; https://research.rug.nl/en/publications/distinction-of-southamerican-haplogloiaandersonii-and-chordarialinearis-phaeophyceae-based-on-differences-in-sexual-reproduction-morphology-ecophysiology-and-distribution(5e92b09b-4dcf-4af9-a474-5699608e7223).html

Haplogloia andersonii (Farlow) Levring is an anti-tropical species that occurs on cold and warm-temperate Pacific coasts of both Americas. In its habit it resembles the subantarctic species Chordaria linearis (Hooker et Harvey) Cotton. Culture studies show that the species differ in morphology and ecophysiology of their microscopic gametophytes and in gamete behavior. Details of sporophyte anatomy are presented that also allow the distinction of field plants. In South America, H. andersonii occurs only on the Pacific coast, from central Peru (14-degrees-S) to southern Chile (50-degrees-S). Chordaria linearis occurs on the Pacific coast from Chiloe Island (43-degrees-S) to Cape Horn (56-degrees-S). In the shared area the species may co-occur. On the Atlantic coast, C. linearis was newly collected at a locality in northern Patagonia (41-degrees-S). In addition, C. linearis occurs in Antarctica. Haplogloia moniliformis Ricker, recently described from Macquarie Island, is probably synonymous with Chordaria linearis.