152,885 species and infraspecific names are in the database, 20,939 images, 59,127 bibliographic items, 408,269 distributional records.

Microphyllum Weber-van Bosse, 1928

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Rhodymeniales
Family Rhodymeniaceae

Holotype species: Microphyllum borneense Weber-van Bosse

Original publication and holotype designation: Weber-van Bosse, A. (1928). Liste des algues du Siboga, IV. Rhodophyceae. Troisème partie. Gigartinales et Rhodymeniales et tableau de la distribution des Chlorophycées, Phaeophycées et Rhodophycées de l'Archipel Malaisien. Siboga-Expeditie Monographie 59d. pp. 393-533, figs 143-213, pls XI-XVI. Leiden: E.J. Brill.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Saunders, G.W. & McDonald, B. (2010). DNA barcoding reveals multiple overlooked Australian species of the red algal order Rhodymeniales (Florideophyceae), with resurrection of Halopeltis J. Agardh and description of Pseudohalopeltis gen. nov. Botany 88: 639-667, 73 figs.

Description: Thallus auriculate, blades arising from a rhizomatous holdfast via a small stipe. Construction multiaxial, cortex of 2-4 layers of small cells, the outermost cells ovoid. Medulla of 1-2 layers of large colourless cells. Spermatangial plants unknown. Carpogonial plants unknown; gonimoblast developing outwards often with 2-3 lobes, almost all cells forming carposporangia. Cystocarps hemispherical, large and protruding, ostiolate, formed on both sides of the blade, tela arachnoidea absent. Tetrasporangia scattered throughout the blade, formed in an unmodified cortex. Spores regularly cruciately arranged. This genus is poorly known but is characterized by an auriculate thallus, medullary cells in 1-2 layers, and the absence of a tela arachnoidea in the cystocarp. Norris (1991) mentioned some oblique divisions of cortical cells in a cystocarp-bearing plants which he though might represent spermatangia; this would be unusual as most other species referred to the Rhodymeniaceae are dioecious.

Information contributed by: M.D. Guiry. The most recent alteration to this page was made on 26 Mar 2011 by M.D. Guiry.

Comments: Microphyllum borneense is known from the subtidal of Borneo and South Africa at depths of up to 57 m. M. crispum (W.R. Taylor) Dawson is found in deep water off the Pacific coast of Mexico (Dawson 1963).

Numbers of names and species: There are 3 species names in the database at present, of which 3 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

Verification of data
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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.

Created: 28 December 2000 by M.D. Guiry

Verified by: 26 March 2011 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=40178

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 September 2018.

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