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Electronic Flora of South Australia Species Fact Sheet
Phylum Chlorophyta – Order Caulerpales – Family Udoteaceae
Thallus (Fig. 81D) dark green, erect, subdichotomous to irregularly branched partly in one plane, to 6 cm high, branches 1–2 mm broad, compressed, holdfast small. Medulla (Fig. 84A) of longitudinal, branched filaments 13–28 µm in diameter, forming a surface cortical layer (12–27 µm wide) of short clavate branches 4–7 µm in diameter (Fig. 84A) adhering together as seen in surface view. Chloroplasts ovoid, 2–3 µm long; amyloplasts sparse.
Reproduction: Reproduction unknown.
Type from Point Sinclair, S. Aust., uppermost sublittoral (Womersley, 25.i.1951); in ADU, A13618.
Selected specimens: Hopetoun, W. Aust., 2–3 m deep (Kraft (6995) & Ricker, 16.viii.1979; ADU, A 50717). 16 km E. of Eucla, S. Aust., drift ( Womersley, 3.ii.1954; ADU, A19239).
Distribution: From Hopetoun, W. Aust. to Point Sinclair, S. Aust.
References:
WOMERSLEY, H.B.S. (1955). New marine Chlorophyta from southern Australia. Pacif. Sci. 9, 387–395.
The Marine Benthic Flora of Southern Australia Part I complete list of references.
Publication:
Womersley, H.B.S. (31 May, 1984)
The Marine Benthic Flora of Southern Australia
Part I
©Board of the Botanic Gardens and State Herbarium, Government of South Australia
Illustrations in Womersley Part I, 1984: FIGS 81D, 84A.
Figure 81 enlarge
Fig. 81. A. Pseudochlorodesmis australis (ADU, Al2250, type). B. Chlorodesmis baculifera (ADU. A51906. right hand specimen fertile). C. Halimeda cuneata (ADU. A50610). D. Pseudocodium australasicum(ADU. A 13618, type).
Figure 84 enlarge
Fig. 84. A. Pseudocodium australasicum (ADU, A13618). Longitudinal thallus structure. B–F. Callipsygma wilsonis. B. Loosely branched filaments (ADU, A32028). C. Flabellate tuft largely complanately branched. D. Detail of C showing lateral attachments. E. Apex of cell with two daughter cells and perforations between cells; lateral attachment to cell on left; chloroplasts, amyloplasts and acicular crystals. F. Cross section of older part showing short lateral chains of cells. (C–F ADU, A37818)
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