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Ditria zonaricola (Okamura) T.Yoshida & M.Yoshida

Reference
J.Fac.Sci.Hokkaido Imp.Univ., Ser. 5, Bot. 13:46 (1983)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus epiphytic; prostrate axes 2–3 mm long, 60–70 µm diam. [segment L:B c. 1], attached by branched multicellular rhizoids, these with a single primary cell cutting off 6–9 radiating dichotomously branched arms. Lateral branches to 75 µm diam. [segment L:B 0.5–1], determinate and simple or with 1 or 2 laterals. Trichoblasts to 650 µm long, when young secundly branched, but appearing dichotomous when mature; basal 1 or 2 cells equidimensional, more distal cells progressively narrower and more elongate.

Reproduction. Reproductive structures not observed.

Distribution. Known from Japan, eastern Australia (Queensland and Lord Howe Island) and north-western Australia.

Habitat. Epiphytic on Lobophora sp. in the intertidal.

[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 504 (2018)]