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Electronic Flora of South Australia Genus Fact Sheet

Genus WRANGELIA C. Agardh 1828: 136

Phylum Rhodophyta – Order Ceramiales – Family Ceramiaceae – Tribe Wrangelieae

With the characters of the tribe.

Lectotype species: W. penicillata (C. Agardh) C. Agardh 1828: 136 (J. Agardh 1842: 79).

Taxonomic notes: A genus of some 17 species, well represented in southern Australia with five species.

References:

AGARDH, C.A. (1828). Species Algarum. Vol. 2, pp. 1–189. (Mauritius: Greifswald.)

AGARDH, J.G. (1842). Algae Maris Mediterranei et Adriatici, Observationes in Diagnosin Specierum et Dispositionem Generum. (Fortin, Masson: Paris.)

The Marine Benthic Flora of Southern Australia Part IIIC complete list of references.

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (24 December, 1998)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIC. Ceramiales – Ceramiaceae, Dasyaceae
©State Herbarium of South Australia, Government of South Australia

KEY TO SPECIES OF WRANGELIA

1. Ends of thallus branches more or less terete; whorl-branchlets subdichotomously to unilaterally branched; cortical rhizoidal cells not producing an outer layer of branchlets

2

1. Ends of thallus branches strongly flattened owing to greater development of lateral whorl-branchlets; whorl-branchlets alternately pinnate or subdichotomous; corticating rhizoid cells producing an outer layer of branchlets

4

2. Terminal cells of whorl-branchlets mucronate, L/D 1–2

W. velutina

2. Terminal cells of whorl-branchlets not mucronate, usually L/D more than 2

3

3. Thallus 10–30 (–60) cm high; whorl-branchlets subdichotomously branched 2–3 times near the base, ultimate branches of 9–10 cells; tetrasporangia not surrounded by special small-celled involucral branchlets

W abietina

3. Thallus (2–) 5–10 (–25) cm high; whorl-branchlets subdichotomously to unilaterally branched 5–8 times, ultimate branches of 2–4 (–6) cells; each tetrasporangium surrounded by 2–5 curved involucral branchlets of small cells

W. plumosa

4. First- and second-formed whorl-branchlets of each whorl formed on opposite sides of the axis, strongly developed and reaching 3 mm long, other whorl-branchlets shorter, terminal cells acute; outer cortical branchlets terminating in acute cells

W nobilis

4. Whorl-branchlets formed in alternating sequence with the first- and second-formed of each whorl on the same side of the axis, alternating on successive axial cells, villose and reaching 4 mm long, other whorl-branchlets much shorter with terminal cells mucronate; outer cortical branchlets terminating in large spherical cells

W australis


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