Electronic Flora of South Australia Genus Fact Sheet

Genus PAPENFUSSIELLA Kylin 1940: 17

Phylum Phaeophyta – Order Chordariales – Family Chordariaceae

Thallus slightly to much branched, tomentose, with long, relatively slender laterals, with or without shorter branchlets, 5–50 cm high and 1–6 mm in diameter. Medulla multiaxial, of longitudinal, parallel filaments with usually slight development of hyphae. Subcortex slight to virtually absent. Cortex of filaments arising directly from peripheral cells of medulla or short subcortical cells, consisting of assimilatory filaments of two types: shorter filaments, often curved, with intercalary divisions, and longer, broader, more less indeterminate filaments with most cell divisions near their base. Phaeophycean hairs absent.

Reproduction: Reproduction of the sporophyte by ovoid, unilocular sporangia borne at the base of the cortical filaments. Gametophytes dioecious, with small plurilocular gametangia producing isogametes (Peters 1984).

Life history (in P. callitricha) diplohaplontic and heteromorphic, with a macroscopic sporophyte and a filamentous gametophytic microthallus bearing plurilocular gametangia in P. callitricha (Rosenvinge) Kylin (Wilce 1969; Peters 1984) and in P. kuromo (Yendo) Inagaki (Arasaki 1948). Unknown in other species.

Type species: P. gracilis Kylin.

Taxonomic notes: Papenfussiella is a genus of some seven species (Kylin 1940, pp. 17–20), known from the subarctic to cold temperate Atlantic, Japan, South Africa, Tristan da Cunha, Juan Fernandez, New Zealand, and is now recorded from southern Australia. The species are separated mainly on robustness and cell diameters and proportions in the long cortical filaments; this is not clear-cut between some of the species.

References:

ARASAKI, S. (1948). On the life-history of the Acrothrix pacifica, Myriocladia kuromo and Petrospongium rugosum. Seibutu 3, 95–102.

KYLIN, H. (1940). Die Phaeophyceenordnung Chordariales. Acta Univ. lund. N.F. Avd. 2, 36(9), 1–67, Plates 1–8.

PETERS, A.F. (1984). Observations on the life history of Papenfussiella callitricha (Phaeophyceae, Chordariales) in culture. J. Phycol. 20, 409–414.

WILCE, R.T. (1969). Papenfussiella callitricha: new observations on a little-known endemic brown alga from southwest Greenland. J. Phycol. 5, 173–180.

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

Author: H.B.S. Womersley & A. Bailey

Publication: Womersley, H.B.S. (14 December, 1987)
The Marine Benthic Flora of Southern Australia
Part II
©Board of the Botanic Gardens and State Herbarium, Government of South Australia

KEY TO SPECIES OF PAPENFUSSIELLA

1. Indeterminate cortical filaments 15–20 µm in diameter, cells mostly L/B 1–2

P. lutea

1. Indeterminate cortical filaments 8–10 µm in diameter, cells L/B 3–4 in upper part of filaments

P. extensa


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