Acrosiphonia orientalis (J.Agardh) P.C. Silva 1996

Division     Chlorophyta
Class     Ulvophyceae
Order     Acrosiphoniales
Family    Acrosiphoniaceae
Basionym     Anadema orientalis J.Agardh
SynonymSpongomorpha indica Thivy & V.Visalakshmi

    Thalli dark green in colour, caespitose up to 6 cm tall, bushy and closely branched like corymbose tufts, filamentous; filaments repeatedly branched, branches sub dichotomous to pseudo-dichotomously alternately branched from the upper parts or lower half of the branches; cells sub-cylindrical tapering below with thick walls; the characteristics downwardly growing rhizoids arising from the lower ends of the cells. Lower cells of branches measure up to 2.4mm in length and 170-300 μm in width. Cells gradually reducing in size towards the apex of the thallus. Cells measures 84-70 μm in length and 3-12 μm in width.


Mid littoral zone and infra littoral fringe, sometimes as epiphyte on Sargassum or on other macro algae.

Distribution in India

Karnataka (Yadav & Palanisamy 2020) Gujarat, Tamil Nadu (Silva & al., Sahoo et al. 2001, Rao & Gupta 2015, Gupta 2012),, Pakistan (Silva & al. 1996).