Chamaebotrys boergesenii (Weber Bosse) Huisman
Phycologia 105 (1996)
Conservation Code:
Not threatened
Naturalised Status: Native to Western Australia
Name Status:
Current
Scientific Description
John Huisman & Cheryl Parker,
Monday 20 June 2011
Habit and structure. Thalli prostrate, with entangled axes attached to the substratum by short, solid stipes. Axes dichotomously to trichotomously branched, irregularly moniliform with spherical to oval segments [2–6 mm (L) x 2–5 mm (B)] with broad constrictions between the segments and numerous adventitious branches that can form secondary holdfasts or fusions between adjacent segments. Septa between segments several cells thick. Structure with an outer cellular layer encasing a mucilage filled cavity. Outer cellular layer with a medulla of large hyaline cells (70–180 x 70–110 µm in surface view) subtending 2–3 layers of progressively smaller, pigmented cortical cells (6–8 µm in diameter). Spherical gland cells (20–25 µm in diameter) borne, singly or on pairs, either on stellate cells arising from the inner surface of the medullary layer or directly on the medullary cells.
Reproduction. Mature cystocarps protuberant, with a well developed pericarp. Spermatangia not seen. Tetrasporangia spherical to elliptical, cruciately-divided, terminal, borne in nemathecial sori.
Distribution.
In
Habitat. Generally found in protected positions on and under rock and coral ledges. It is occasionally found growing epizoically. Specimens have been collected from the upper sublittoral to 40–50 m depths.
