Electronic Flora of South Australia Genus Fact Sheet

Genus PILINIA Kützing 1843: 273; 1854: 20, pl. 91, fig. I

Phylum Chlorophyta – Order Chaetophorales – Family Chroolepidaceae

Thallus epilithic or epiphytic, with a basal stratum of radiating filaments, each cell of which produces erect filaments. Erect filaments without hairs and of one or two heights; a dense layer of short filaments one to 6 cells long, overtopped by scattered filaments many cells long. Cells elongate, chloroplast single, filling most of the cell and often somewhat lobed, with one to a few pyrenoids.

Reproduction: Reproduction by sporangia borne terminally on the short filaments or laterally on the long filaments, sessile or with a single-celled pedicel. Nature of zooids not recorded.

Type species: P. rimosa Kützing.

Taxonomic notes: A genus of about nine species (see Gallagher & Humm 1980, p. 536).

The type species is discussed by Papenfuss (1962, p. 9) but a detailed study of material from the type locality (Cuxhaven, Germany) is clearly needed to establish the characters of the genus. Papenfuss considered that Sporocladopsis Nasr is a synonym of Pilinia and transferred S. novae-zelandiae Chapman to this genus. Other species are discussed by Gallagher & Humm (1980).

References:

GALLAGHER, S.B. & HUMM, H.J. (1980). Pilinia earleae n.sp. (Chlorophyceae, Chroolepidaceae) from the Florida west coast. J. Phycol. 16, 532–536.

KÜTZING, F.T. (1843). Phycologia generalis. (Leipzig.)

KÜTZING, F.T. (1854). Tabulae Phycologicae. Vol 4. (Nordhausen.)

PAPENFUSS, G.F. (1962). On the circumscription of the Green Algal genera Ulvella and Pilinia. Phykos 1, 6–12.

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

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (31 May, 1984)
The Marine Benthic Flora of Southern Australia
Part I
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