Stragularia clavata (Harvey) G.Hamel
Description: Thallus a blackish-brown to burnt
ochre, extensive, orbicular crust, often centrally peeling from
the substrate. Thallus with a distinct margin.
Thallus formed of erect filaments curving up from a prostrate
system. Filaments fused, not easily separable under
pressure, usually more than 10 cells long each cell with a
single discoid chloroplast. Hairs present.
Club-shaped multicellular (6-12 cells) paraphyses present.
Unilocualr sporangia terminal in sori; plurilocular sporangia
multiseriate, terminal in sori.
Habitat: upper to lower intertidal in pools on
rock.
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