Boldia Herndon, 1964
Holotype species: Boldia erythrosiphon Herndon
Original publication and holotype designation: Herndon, W.R. (1964). Boldia: a new rhodophycean genus. American Journal of Botany 51: 575-581.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Sheath, R.G. (2003). Red Algae. In: Freshwater Algae of North America, Ecology & Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 197-224. San Diego: Academic Press.
Description: Mauve-pink to reddish brown (rare olive-green), hollow, monostromatic sac or tube, 1-20 (40-75) cm long and 0.1-2.0 cm diam. Vegetative cells rectangular, 5-20 (45) µm in diam., containing several peripheral, ribbon-like chloroplasts and a large central vacuole. Secondary filaments arise as outgrowths from vegetative cells, elongating between and above vegetative cells and eventually dividing to form monospores, 5-9 µm diam. Monospores germinate developing into a prostrate, monostromatic disc or an aggregation of creeping filaments. The disc or aggregation produces a cushion-like mound of cells that functions as a perennial holdfast, producing seasonally macroscopic thalli. Sexual reproduction not observed.
Information contributed by: R.G. Sheath. The most recent alteration to this page was made on 4 Oct 2010 by M.D. Guiry.
Comments: Cell wall composed of cellulose and xylan fibrils with amorphous component containing galactose. Localized in scattered streams in eastern North America, extending from central Alabama (perhaps Missouri) to southern James Bay in northern Québec. Range of ecological factors: current velocity 3.71 cm s-1, pH 6.1-8.5, specific conductance 18-290 S cm-1, dissolved oxygen 4.5 mg 1-1-saturation, temperature 12-25°C. In southern range often associated with snails of the family Pleuroceridae with high manganese content in the shells, appearing in late winter and usually disappearing by early summer. In northern streams largely epilithic and occurring throughout the summer. Can contribute significantly to stream primary productivity
Numbers of names and species: There are 2 species names in the database at present, of which 1 has 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):
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Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
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
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42905
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 September 2019.