Struvea Sonder, 1845, nom. cons.

Holotype species: Struvea plumosa Sonder

Original publication and holotype designation: Sonder, G. (1845). Nova algarum genera et species, quas in itinere ad oras occidentales Novae Hollandiae, collegit L. Priess, Ph. Dr. Botanische Zeitung 3(4): 49-57.

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Description: Thallus composed of one or more stipitate blades, 1-30 cm tall including stipes. Stipe aseptate, rarely branched, with or without annular constrictions, diameter varying or uniform throughout its length, 500-2000 ┬Ám diameter, 1-10 cm long. Blade composed of many branched, septate and aseptate, siphonous pinnae forming stellate or criss-cross patterns to two or three (rarely more) ranks; course or delicate, loosely or tightly woven, with or without prominent costal pattern. Apical, uniaxial orientation maintained throughout development. Rhizoid well developed, branched, and septate from which new uprights can arise. Structural reinforcement of blade achieved by minute, determinate tenacular cells cut off from adjacent pinnae. Blade initiated from apical end of stipe by centripetal invagination. Primary and secondary laterals arising from opposite, astipitate protrusions along distal sides of previously cut-off segments. Cell division by centripetal invagination in central axis and primary laterals; by segregative division in secondary and higher order laterals. Cells multinucleate; chloroplasts multiple and discoid, each with single pyrenoid. The life history of Struvea not documented although zoospores observed. Diploid chromosome number of 24 reported for S. anastomosans. Struvea species distributed throughout the tropics and subtropics in water ranging from <1 m to more than 30 m deep. Habitats are mostly cryptic and the genus is not particularly common, but generally found in patches. The larger species such as S. plumosa are found in quiet waters. Struvea used in studies of cytoplasmic wounding responses and role of microtubules in biogenesis of cellulose microfibrils. Although genus widely reported but no monographic treatments carried out. Immunological distance data and character compatibility analysis suggest that Boodlea is the sister genus to Struvea. It is not closely related to Microdictyon and Chamaedoris as suggested in much of the early literature.

Information contributed by: J.L. Olsen. The most recent alteration to this page was made on 2015-10-19 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Comments: Description emended by Leliaert (Leliaert et al., 2007: 722) because with the inclusion of S. okamurae (Chamaedoris orientalis Okamura & Higashi) in the genus Struvea, the generic character traits require a revision.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 19 October 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 27 February 2024

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