Lychnothamnus (Ruprecht) A.Braun, 1856

Holotype species: Lychnothamnus barbatus (Meyen) Leonhardi

Original publication and holotype designation: Braun, A. (1857). Über Parthenogenesis bei Pflanzen. Abhandlungen der Koniglichen Akademie der Wissenschaften zu Berlin 1856: 311-376.

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Description: Monoecious. Plant axis corticated or cortex reduced to a few filaments growing down from the axial nodes. Stipulodes in one whorl (haplostephanous), branchlets ecorticate, bract cells elongate (>8 mm) and verticillate. Gametangia arranged on the branchlet nodes side-by-side, usually two antheridia with a central oosporangium. Gametangia originating from different initial cells. Helical cells of the oosporangium terminated by a coronula of five cells. Oospores with a calcified covering (gyrogonite).

Information contributed by: Casanova & Karol (2023). The most recent alteration to this page was made on 2023-06-16 by E.A. Molinari Novoa.

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

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Casanova, M.T. & Karol, K.G. (2023). Charophytes of Australia’s Northern Territory – I. Tribe Chareae. Australian Systematic Botany 36(1): 38-79, 22 figs.

Comments: Lychnothamnus has one species in Europe, with representatives in China (Han and Li 1994), India (Wood and Imahori 1965), the United States (Karol et al. 2017), and several fossil representatives (Martin-Closas and Ramos 2005).

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=43353

Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 16 June 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024