Acrosorium venulosum (Zanardini) Kylin 1924

Publication Details
Acrosorium venulosum (Zanardini) Kylin 1924: 77, fig. 60

Published in: Kylin, H. (1924). Studien über die Delesseriaceen. Lunds Universitets Årsskrift, Ny Följd, Andra Afdelningen. N.F. Avd. 2 20(6): 1-111, 80 figs.

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Type Species
The type species (holotype) of the genus Acrosorium is Acrosorium aglaophylloides Zanardini ex Kützing.

Status of Name
This name is currently regarded as a synonym of Acrosorium ciliolatum (Harvey) Kylin.

Source of Synonymy
Womersley, H.B.S. (2003). The marine benthic flora of southern Australia - Part IIID Ceramiales - Delesseriaceae, Sarcomeniaceae, Rhodomelaceae. pp. [1]-533, 226 figs, 2 pls. Canberra & Adelaide: Australian Biological Resources Study & State Herbarium of South Australia.

Basionym
Nitophyllum venulosum Zanardini

Type Information
Type locality: Zadar, Croatia; (Silva & al. 1996: 446) Notes: Although Zanardini’'s types should be in the Museo Civico, Venice, De Toni & Levi (1988) did not list any relevant specimen in this collection. Other possibilities are W, HBG and L. (Maggs & Hommersand, 1993).

Origin of Species Name
Adjective (Latin), finely-veined or profusely veined.

General Environment
This is a marine species.

Description
Flattened, membranous, deep red fronds, 30-150(-200) mm long. Frond deeply divided into linear-lanceolate, irregularly branched segments, often terminating in hooks. Margins toothed, often ± proliferous. Frond traversed by network of microscopic veins, macroscopic veins absent.

Created: 17 May 1996 by M.D. Guiry.

Last updated: 06 December 2023

Verification of Data
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Taxonomic note
As to type, the names Acrosorium reptans (P.L. Crouan & H.M. Crouan) Kylin and A. uncinatum (Turner) Kylin are based on forms of Cryptopleura ramosa (Wynne 1989; Maggs & Hommersand 1993, p. 254-55); however, some reports of A. reptans are based on specimens of A. venulosum and some on Cryptopleura ramosa. Individual examination of specimens is therefore necessary to establish validity of many records. John et al. (2004) cite Acrosorium uncinatum (Turner) Kylin, Nitophyllum uncinatum (Turner) J. Agardh and Aglaophyllum laceratum Mont. as synonyms of this species. According to Maggs & Hommersand (1993: 255), Acrosorium uncinatum sensu Kylin (1924: 77) [non Fucus laceratus var. uncinatus Turner (1808: 68) is a synonym of Acrosorium venulosum (Zanardini) Kylin (1924: 77). Womersley (2003: 133) notes: "The type of Acrosorium ciliolatum has numerous short, slender, "cilia" on the margins and surface.... As Kylin (1929: 13) considered, A. ciliolatum is not specifically distinct from A. venulosum, and is the earliest name for this Acrosorium. Most descriptions under Acrosorium venulosum or A. uncinatum state "gametophyes unknown". However, a few southern Australian collections (e.g. AD, A31152) with typical uncinate branches and agreeing well with this species, do bear cystocarps, and the description" (given by Womersley 2003) "of female stages is based on these." See Kang & al. (2021: fig. 2) for the separateness of material from Spain and the UK from material from the southern hemisphere. - (11 May 2006) - M.D. Guiry

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 December 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 08 April 2025

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