Other species contain linear sporidia, which are often the length of the ascus, and may either be simple or septate.
In the latter species there are only two spores in an ascus.
ascus (asci), a sac, the spore-case of Lichens and some Fungi.
ascus, the club-shaped body which bears the spores inside (characteristic of the Ascomycetes).
Sporidia of same inclosed in ascus with accompanying paraphyses.
This operculum may be the more readily seen when the ascus is coloured by a drop of tincture of iodine.
By crushing the ripe spore fruit, these spores still enclosed in the mother cell (ascus) may be forced out (Fig. 39, H).
Thallus septate; spores developed in special type of sporangium, the ascus, the number of spores being usually eight.
Some of these are indefinite in the number contained in an ascus, although the majority are eight, and a few less.
In the development of the ascus we find two nuclei at the base which fuse together to form the single nucleus of the young ascus.
"sac in certain fungi," 1830, Modern Latin, from Greek askos "leather bag, wine skin," of unknown origin.
ascus as·cus (ās'kəs)
n. pl. as·ci (ās'ī', -kī')
A membranous, often club-shaped structure in which typically eight spores are formed through sexual reproduction of ascomycetes.
Plural asci (ās'ī', -kī')
A membranous, often club-shaped structure inside which ascospores are formed through sexual reproduction in species of the fungi known as ascomycetes. The ascus is unique to ascomycetes and distinguishes them from other kinds of fungi. Asci are formed when two hyphae that are sexually compatible conjugate. Each ascus typically develops eight ascospores. Asci swell at maturity until they burst, shooting the ascospores into the air.