tet·ra·spo·ran·gi·um

(tĕt′rə-spə-răn′jē-əm)

n. pl. tet·ra·spo·ran·gi·a (-jē-ə)

A unicellular sporangium found in certain red algae in which four tetraspores are produced through meiosis.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tetrasporangium

(ˌtɛtrəspəˈrændʒɪəm)

(Botany) a sporangium having four asexual spores

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

tetrasporangium - a sporangium containing four asexual spores

sporangium, spore case, spore sac - organ containing or producing spores

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References in periodicals archive

Saenger & Wollaston (1982), however, found slightly elongate terminal cells in the type specimen of the taxon and stated that "in the limited material available, no more than one tetrasporangium has been observed on each fertile whorl-branchlet" (page 81) suggesting that they had limited access to tetrasporic material of the species, and they could not dismiss a priori the presence of several tetrasporangia per whorl.

Crouania pumila sp. nov. (Callithamniaceae: Rhodophyta), a new species of marine red algae from the Seaflower International Biosphere Reserve, Caribbean Colombia

Usually one, rarely two, tetrasporangium per node, tetrahedrally divided, 30-45 [micro]m in diam.

New records of red algae (rhodophyta) for Cabezo reef, National Park Sistema Arrecifal Veracruzano, Gulf of Mexico

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