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Electronic Flora of South Australia Species Fact Sheet
Phylum Chlorophyta – Order Caulerpales – Family Caulerpaceae
Synonyms
f. cylindracea (Sonder) Weber van Bosse 1898: 366, pl. 33 figs 17–20. Womersley 1956: 368.
Caulerpa cylindracea Sonder. Harvey 1858: pl. 30.
Stolon slender to moderate, 0.7–1.5 (–2) mm in diameter, naked, in firm sandy mud substrate or epilithic. Erect fronds (Fig. 91B) medium green, with simple or occasionally branched axes, (1–) 4–7 (–10) cm high and 3–8 mm across with the axis 0.5–1 mm thick, bearing vesiculate ramuli loosely to moderately densely on all sides. Ratnuli (Fig. 92D) upwardly directed, clavate, (1.5–) 2–5 (–7) mm long and (0.5–) 1–1.5 (–2) mm in greatest diameter shortly below the rounded apices, tapering gradually to a relatively broad and unconstricted attachment to the axes.
Type (of form) from W. Aust. (Preiss); in MEL, 516014.
Selected specimens: Whitfords Beach, Perth, W. Aust., 4 m deep (Cook, 20.viii.1979; ADU, A50562). Point Peron, W. Aust., upper sublittoral pools ( Womersley, 29.ix.1979: ADU, A50713-"Marine Algae of southern Australia" No. 189). Hopetoun, W. Aust., upper sublittoral on reef (Wollaston, 20.6.1957: ADU, A22149).
Distribution: From tropical W. Aust. around the south-west coast to King Georges Sound, usually in the uppermost sublittoral.
Taxonomic notes: This tropical species just extends into southern Australia. It is readily distinguished by the clavate ramuli with broad attachment to the axes. The ramuli vary considerably in density, being sparser nearer the eastern end of its range.
References:
HARVEY, W.H. (1858). Phycologia Australica. Vol. 1, Plates 1–60. (Reeve: London.)
WEBER van BOSSE, A. (1898). Monographie des Caulerpes. Ann. Jardin Bot. Buitenzorg 15, 243–401, Plates 20–34.
WOMERSLEY, H.B.S. (1956). A critical survey of the marine algae of southern Australia. I. Chlorophyta. Aust. J. mar. freshw. Res. 7, 343–383.
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 91B, 92D.
Figure 91 enlarge
Fig. 91. A. Caulerpa cactoides (ADU, A43586). B. Caulerpa racemosa var. laetevirens f. cylindracea (ADU. A50562). C. Caulerpa papillosa (ADV. A26451). D. Caulerpa vesiculifera (ADV. A32487). E. Caulerpa simpliciuscula (ADU, A32488).
Figure 92 enlarge
Fig. 92. A. Caulerpa geminata, ramuli on axis (ADU, A50951). B. Caulerpa annulata, ramuli on axis (ADU, A48232). C. Caulerpa cactoides, lower axis with ramuli, on stolon (ADU, A43586). D. Caulerpa racemosa var. laetevirens f. cylindracea, ramuli (ADU, A50562). E. Caulerpa papillosa, cross section of axis with ramuli (ADU, A26451). F. Caulerpa vesiculifera, cross section of axis with ramuli (ADU, A32487). G. Caulerpa simpliciuscula cross section of axis with ramuli (ADU, A32488).
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