Species: Bonnemaisonia hamifera Hariot Krokbærar, Raudlo (Trailliella-stadiet) Krokbærer, Rødlo (Trailliella-stadiet) in Norwegian Bokmål
Classification The species Bonnemaisonia hamifera belongs to:
Photos Photos of Bonnemaisonia hamifera (9):
1 of 9: Hook branches of gametophyteSmall branch showing branching pattern and characteristic hook branches of the gametophyte Photo: © Kjersti Sjøtun Terms of use
Species Bonnemaisonia hamifera
Verified by Bergen Seaweed Group
Sampling location Løholmane, Raunefjorden, Hordaland
Sampling date 2008-05-06
Published 2008-10-27 Photo is showing (categorized)
2 of 9: Habit of gametophyte
Species Bonnemaisonia hamifera
Verified by Bergen Seaweed Group
Sampling location Løholmane, Raunefjorden, Hordaland
Sampling date 2008-05-06
Published 2008-10-27 Photo is showing (categorized) Note: The species is introduced to Europe from Japan, and was first recorded in Norway in 1902. The diploid tetrasporophytic phase is now very common in Norway along the whole coast, but the haploid gametophytic phase is very rare, since tetraspores only develop under short-day conditions when temperature is 13-19 oC. The gametophytic thallus is up to 20 cm, branched, and some branches are modified to characteristic hooks.
3 of 9: Branching pattern of sporophyteUniseriate structure and irregular branching Photo: © Kjersti Sjøtun Terms of use
Species Bonnemaisonia hamifera
Verified by Bergen Seaweed Group
Sampling location Espegrend, Raunefjorden, Hordaland
Sampling date 2008-11-25
Published 2008-12-01 Photo is showing (categorized)
4 of 9: Male gametophyte bearing spermatangial clusters in June
Species Bonnemaisonia hamifera
Verified by Network members
Sampling location Huglo, Hardangerfjorden, Hordaland
Sampling date 2009-06-28
Published 2012-04-17 Photo is showing (categorized) Note: Spermatangia are formed in elongate, clavate clusters of 1-5 mm length, replacing the shorter lateral branch of a pair.
5 of 9: Female gametophyte developing cystocarps
Species Bonnemaisonia hamifera
Verified by Network members
Sampling location Stora Kalsøy, Austevoll, Hordaland
Sampling date 2009-04-17
Published 2012-04-17 Photo is showing (categorized)
6 of 9: Spermatangial cluster
Species Bonnemaisonia hamifera
Sampling location Huglo, Hardangerfjorden, Hordaland
Sampling date 2009-06-28
Published 2012-04-17 Photo is showing (categorized)
7 of 9: Cystocarp
Species Bonnemaisonia hamifera
Verified by Network members
Sampling location Stora Kalsøy, Austevoll, Hordaland
Sampling date 2009-04-17
Published 2012-04-17 Photo is showing (categorized)
8 of 9: Gland cells of sporophyteCharacteristic gland cells are seen in the junction between cells Photo: © Kjersti Sjøtun Terms of use
Species Bonnemaisonia hamifera
Verified by Bergen Seaweed Group
Sampling location Espegrend, Raunefjorden, Hordaland
Sampling date 2008-11-25
Published 2008-12-01 Photo is showing (categorized)
9 of 9: Habit of sporophyteSporophytes growing epiphytically on Cladophora rupestris Photo: © Kjersti Sjøtun Terms of use
Species Bonnemaisonia hamifera
Verified by Bergen Seaweed Group
Sampling location Espegrend, Raunefjorden, Hordaland
Sampling date 2008-11-25
Published 2008-12-01 Note: The sporophytic phase is very common in Norway. The densely branched thalli are up to 5 cm, and the axes are uniseriate and irregularly branched. It has characteristic small gland cells in the junction between cells.
Closest relatives Other species in the same genus (Bonnemaisonia):
