Electronic Flora of South Australia Species Fact Sheet
Phylum Chlorophyta – Order Ulvales – Family Ulvaceae
Selected citations: Dangeard 1958: 23, figs 5–8. Gayral 1963: 79. Kapraun 1970: 210, figs 1,2 41–43. Saifullah & Nizamuddin 1977: 522, pl. IC, figs 5–7. Taylor 1960: 66, pl. 1, fig. 4.
Thallus (Fig. 46B) grass-green to brownish-green on drying, 20–45 cm high, with a small discoid holdfast, divided shortly above the base into numerous, simple or branched, relatively flat and smooth, elongate-lanceolate branches, each slightly to distinctly constricted basally, broadest (1–2 (–4) cm) a few cm above the base and then tapering fairly evenly to a slender tip 1–4 mm broad; margin relatively smooth to slightly irregular or with occasional coarse spinous projections; surface even, in some branches with a lighter-coloured, broad central region in dried specimens. Cells in surface view arranged in slight, often curved rows or irregularly, isodiametric to elongate and (8–) 10–13 (–15) µm across in central and upper parts of branches (Fig. 47D), (10–) 12–17 across in lower rhizoidal parts where rhizoid-producing cells are rounded and 16–25 µm across (Fig. 47F); pyrenoids (1–) 2–3 per cell. Thallus (70–) 90–115 (–140) µm thick in mid and upper parts (Fig. 47D,E) with cells L/B about 2 and (25–) 30–45 (–50) µm long (Fig. 47E); 100–140 µm thick in lower parts with cells L/B 1–2 and 30–45 (–50) µm long; and 150–250 µm thick with cells L/B 3–4 and 35–50 µm long where rhizoids develop and become densely aggregated as a central mass up to 100 µm thick (Fig. 47G).
Reproduction: Gametes isogamous, also developing parthenogenetically (Kajimura 1973, p. 31).
Type from Alexandria, Egypt; in MPU.
Distribution: Widely distributed in warmer seas though probably some references to this species are doubtful.
Only known in southern Australia from Wanna (Port Lincoln), S. Aust. (Womersley, 19.ii.1959; ADU, A22338, A22437) and West Lakes (Adelaide), S. Aust. (MacFarlane, 10.xi.1980; ADU, A51836). Also from Turimetta Head, N.S.W. (King, 20.x.1976; UNSW 13873; ADU, A53995).
Taxonomic notes: The collection from Wanna agrees remarkably well in morphology and cell structure with the illustrations and description of U. fasciata by Dangeard, based on material from Morocco. The species was recorded from southern New Zealand by Chapman (1956, p. 396).
CHAPMAN, V.J. (1956). The marine algae of New Zealand. Part I. Myxophyceae and Chlorophyceae. J. Linn. Soc. Bot. 55 (360), 333–501, Plates 24–50.
DANGEARD, P. (1958). Observations sur quelques Ulvacées du Maroc. Le Botaniste 42, 5–63.
DELILE, A.R. (1813). Florae Aegyptiacae illustratio. In France (Commission d'Égypte), Description de l'Égypte, ou recueil des observations et des recherches qui ont été faites en Égypte pendant l'expédition de l'armée Francaise (1798–1801). Histoire naturelle, Vol. 2, pp. 49–82, 145–320 (+ atlas of 62 plates published in 1826).
GAYRAL, P. (1963). Résultats concernant la reproduction et la culture en laboratoire d' Ulva fasciata Delile. Proc. 4th Int. Seaweed Symp., pp. 79–88.
KAJIMURA, M. (1973). On Ulva fasciata Delile from Shimane Prefecture. Bull. Jap. Soc. Phycol. 21, 29–32.
KAPRAUN, D.F. (1970). Field and cultural studies of Ulva and Enteromorpha in the vicinity of Port Aransas, Texas. Contrib. Mar. Sci. 15, 205–285.
SAIFULLAH, S.M. & NIZAMUDDIN, M. (1977). Studies of the marine algae from Pakistan: U 1 vales. Bot. Mar. 20, 521–536.
TAYLOR, W.R. (1960). Marine algae of the eastern tropical and sub-tropical coasts of the Americas. (Univ. Mich. Press: Ann Arbor.)
The Marine Benthic Flora of Southern Australia Part I complete list of references.
Womersley, H.B.S. (31 May, 1984)
The Marine Benthic Flora of Southern Australia
©Board of the Botanic Gardens and State Herbarium, Government of South Australia
Illustrations in Womersley Part I, 1984: FIGS 46B, 47 D–G.
Figure 46 enlarge
Fig. 46. A. Ulva spathulata (ADU, A15224). B. Ulva fasciata (ADU, A22338). C. Ulva taineata (ADU, A24416).
Figure 47 enlarge
Fig. 47. A–C. Ulva spathulata (ADU, A15224). A. Surface and cross section views of upper spathulate part. B. Surface view of petiolar region. C. Cross section of petiolar region. D–G. Ulva fasciata (ADU, A22437). D. Surface view of young part near tip. E. Cross section of mid part of thallus. F. Surface view of thallus just above rhizoidal region. G. Cross section of thallus in rhizoidal region. H–M. Ulva taeniata (ADU, A24416). H. Margin with spines. I. Cross section of thallus near margin. J. Surface of mid part of upper thallus. K. Cross section view in central part of upper thallus. L. Surface view of rhizoidal region. M. Cross section view of rhizoidal region.
State Herbarium of South Australia