Species:
Acrosiphonia arcta (Dillwyn) Gain
Stor grøndott in Norwegian Nynorsk
Stor grønndott in Norwegian Bokmål
Classification
The species Acrosiphonia arcta belongs to:
Photos
Photos of Acrosiphonia arcta (3):
1 of 3: Habit
Note: The species is abundant in the littoral zone during spring. Thallus is bright green, uniseriate and densely branched, and may become up to 10-15 cm long. Axes carry descending rhizoids with somewhat less pigmentation. Some branches end in a conspicuous curved or hooked branch. The tips of branches become pointed or spinous as growth ceases. The sporophyte is a unicellular structure (the Codiolum-stage).
2 of 3: Detail showing hook branches and spinous branches
3 of 3: Microscope picture showing branches and rhizoids
Closest relatives
Other species in the same genus (Acrosiphonia):
- Acrosiphonia grandis Kjellman
- Acrosiphonia sonderi (Kützing) Kornmann
- Storcella grøndott in Norwegian Nynorsk
- Storcellet grønndott in Norwegian Bokmål
- Acrosiphonia spinescens (Kützing) Kjellman