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Definition of Macrosporangium
1. Noun. A plant structure that produces megaspores.
Definition of Macrosporangium
1. n. A sporangium or conceptacle containing only large spores; -- opposed to microsporangium. Both are found in the genera Selaginella, Isoctes, and Marsilia, plants remotely allied to ferns.
Definition of Macrosporangium
1. Noun. A sporangium or conceptacle containing only large spores; opposed to microsporangium. Both are found in the genera ''Selaginella'', ''Isoetes'', and ''Marsilea'', all of which are ferns or remotely allied to ferns. ¹
¹ Source: wiktionary.com
Medical Definition of Macrosporangium
1.
Lexicographical Neighbors of Macrosporangium
Literary usage of Macrosporangium
Below you will find example usage of this term as found in modern and/or classical literature:
1. Coal: Its History and Uses by Alexander Henry Green, Louis Compton Miall, Arthur William Rücker, Alfred Marshall (1878)
"A nearly ripe macrosporangium of Selaginella; the fourth spore is not soon ( x 100).
From Sachs'' Botany.' subdivision of the cell-protoplasm. ..."
2. Journal of the Royal Microscopical Society by Royal Microscopical Society, London (1882)
"The macrosporangium can be detected in the interior of the lobe before any external
... In each macrosporangium can be recognized, at a later period, ..."
3. Text-book of Botany, Morphological and Physiological by Julius Sachs (1882)
"The macrosporangium is visible in the lobe before any external differentiation
... The macrosporangium subsequently consists of a group of sporogenous cells ..."
4. A Student's Text-book of Botany by Sydney Howard Vines (1896)
"where each macrosporangium contains sixteen mother-cells, so that sixty-four
spore-rudiments are formed, only one of these sixty-four comes to maturity, ..."
5. Zoe: A Biological Journal by Townshend Stith Brandegee, Katharine Layne Brandegee (1908)
"The sporangia are set free by the decay of the indusium, but this decay is only
partial in the case of the macrosporangium, and the upper part of the ..."
6. Botanical Gazette by University of Chicago, JSTOR (Organization) (1903)
"BRIEFER ARTICLES THE DEVELOPMENT OF THE macrosporangium OF YUCCA FILAMENTOSA.'
CONSIDERABLE attention has been called to the species of Yucca on account of ..."
7. Strasburger's Text-book of Botany by Eduard Strasburger, Hans Fitting (1921)
"The micro- and maoro- sporocarps at first develop alike ; in each a single
macrosporangium is laid down surrounded by the tubular indusium, ..."
8. A College Text-book of Botany: Being an Enlargement of the Author's by George Francis Atkinson (1905)
"Immediately surrounding it at maturity is a thin, papery tissue, the remains of
the nucellus (macrosporangium), and outside of this are the coats of the ..."
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