Chaetomium sulphureum Sörgel ex Seth 1972

Cuminum cyminum.

Egypt; India.

Colonies. On CMA at 25°C, > 85 mm diam. after 7 days (ca 70 mm after 5 days); submerged mycelium colourless, inconspicuous, radiating from the centre; aerial mycelium absent; ascomata developing after about 10 days, scattered; on MA at 25°C, > 85 mm diam. after 7 days (ca 75 mm after 5 days); submerged mycelium not visible; aerial mycelium copious, somewhat floccose, colourless in the centre, with a conspicuous yellow ring towards the edge of the plate; occasional ascomatal initials present-after about 14 days; on PCA at 25°C, > 85 mm diam. after 7 days (65-70 mm after 5 days); submerged mycelium colourless, well-developed; aerial mycelium fairly sparse, colourless, lanose; ascomata developing abundantly in the centre of the plate after 9-10 days, giving the centre a yellow-grey metallic appearance. Hyphae 1-6 μm diam., colourless to brown, the wider brown hyphae with a conspicuous granular encrustation 1-1.5 μm thick of pale brown material, the hyphae frequently branched and septate. Ascomata. 180-350 × 170-300 μm diam., globose to broadly ellipsoidal, neck absent, with an ostiole 50-80 μm wide developing at a late stage; peridium dark olivaceous brown, composed of relatively thick-walled textura intricata with hyphae 2-4 μm diam.; terminal hairs consisting only of poorly developed and inconspicuous colourless hyphae 1-1.5 μm diam., sometimes branched and irregularly curved; lateral hairs absent, though the terminal hairs emanate from a wide region around the ostiole; basal rhizoids 2.5-4 μm diam., well-developed, dark brown, encrusted; periphyses present but inconspicuous, sometimes extruded from the ostiole for a short distance. Asci. 50-65 × 7.5-10 μm (measured with immature ascospores), cylindrical, very thin-walled, without apical structures, evanescent at an early stage, 8-spored. Ascospores. 12-14.5 (-17.5) × 7-8.5 (-10) μm, widely fusiform, circular in transverse section, colourless when released but becoming dark olivaceous brown, with a single apical germ pore ca 1 μm diam., sometimes darkened around the pore, rather thick-walled, without ornamentation.

Chaetomium sulphureum je grzib, co go ôpisoł Sörgel ex Seth 1972. Chaetomium sulphureum nŏleży do zorty Chaetomium i familije Chaetomiaceae. Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.