ostiole

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Related to ostioles: perithecium, Horta, stroma

ostiole

[′äs·tē‚ōl]
(biology)
A small orifice or pore.

ostiole

A small entrance.
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References in periodicals archive ?
Perithecia spherical to subspherical, sometimes compressed, 0.45-0.5 mm high x 0.34-0.5 mm diam.; ostioles conical papillate, encircled with a truncatum-type disc 0.17-0.25 mm diam.
Sexual State: Ascomata 140 x 220-145 x 175 [micro]m ([bar.x] = 170 x 150 [micro]m, n = 10), semi-immersed, scattered on the putrid host stems and foliage, subglobose or nearly globose, brown to blackish brown, with a central sunken ostiole open via a circular lid, asci and pseudoparaphyses forming on the base of the peridium.
Abdominal margins reddish dorsally; dorsal median plates dark brown, with light brown spots medially and adjacent to ostioles of dorsal abdominal scent glands; dorsolateral plates pale; abdomen reddish ventrally; ventral plates dark brown.
1B) with peritreme thumb-like, anteriorly narrowed and posteriorly broad reaching less than half of evaporatoria, ostioles very much developed slit-like, anterior and posterior margin of peritreme distinctly sinuated; distance base scutellum-apex clavus 3.4 (3.0-3.6); apex clavus-apex corium 1.9 (1.8-2.2); apex corium-apex abdomen including membrane 1.5 (1.5-1.8), apex scutellum-apex abdomen including membrane 3.0 (2.9-3.4).