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Page number:152 
Remarks (internal):Represented by cultures WB 13, received incorrectly labeled as a strain of A. mollis Bain. and Sart. in 1922 from Da Fonseca (Bainier Collection); WB 17, from Major Cornell in 1932 as an isolate from a man's wrist, and many others. In this connection it may be noted that of 37 cultures ex amined by Thom and Raper (1941) that produced ascospores characteristic of their A. repens series, 29 produced colonies and microscopic details that placed them in the species A. repens as described.
The description is broad enough to include strains approximating the description given by Bainier and Sartory for Aspergillus scheelei and Asper gillus B var. scheelei. A. scheelei was described as a species having somewhat larger ascospores showing a definite furrow, whereas Aspergillus B var. scheelei was a strain with smaller ascospores almost without a trace of furrow. Both species were described as characterized by a predominantly yellow pigmentation. Strains of A. repens normally vary slightly in the pattern of their ascospores and in the coloration of their colonies. Such differences are not regarded as sufficiently significant to justify specific descriptions.
Also included is WB 47, distributed by Biourge as Aspergillus argillaceus n.sp. but not described. This culture was included by Raistrick and co-workers (see p. 194) in their biochemical studies of fungus pigments and was received by Thom from Gould in 1940. At that time the culture failed to produce cleistothecia and was cited by Thom and Raper (1941, 1945) as an exceptional strain of A. pseudoglaucus. Cleistothecia have since been observed, though their development is much delayed, and ascospores are entirely typical of A. repens.
 
Description type:General description 
Description:Aspergillus repens De Bary, [as Eurotium repens] in Abhandl. senckenberg. naturforsch. Ges. 7: 379, Plate VII (1870).
As A. repens De Bary
Fischer, E. (1897), in Engler and Prantl, Die naturlichen Pflanzenfamilien I, Abt. I, pp. 302-303; Wehmer, C. (1901), Monograph, p. 68; Schröter, J. (1908), in Cohn, Kryptogamenflora von Schlesiens, p. 215 (Breslau).
Dale, E. (1909), Ann. Mycol. 7: 215-225, Plates II, III.
As A. repens (Cda.) De Bary
Thom and Raper (1941), U.S. Dept. Agr. Misc. Publ. No. 426, pp. 6-12, Figs. 2-A-C, 3A, 4A, and 5A; also Thom and Raper (1945), Manual of the Aspergilli, pp. 103-107.
As E. repens De Bary
Mangin, M. L. (1909), Ann. sci. nat. Botan. 10: 362-364, Fig. 12. Benjamin, C. R. (1955), Mycologia 47: 674-675.
As E. repens (Cda.) De Bary and Woronin
Thom and Church (1926), The Aspergilli, p. 113; also Thom and Raper (1945), Species Index, Manual of the Aspergilli.
Synonyms
Aspergillus repens (Cda.) Sacc. In part. In Saccardo, Sylloge Fungorum, IV, pp. 64-65 (1886).
Eurotium herbariorum Fuckel, Fungi Rhenani No. 1748, fide De Bary, (1870). Aspergillus scheelei Bain. and Sart., Bull. soc. mycol. France 28: 257-262, Plate X (1912).
Aspergillus B var. scheelei Bain. and Sart., Bull. Soc. mycol. France 28: 262-267, Plate XI (1912).
Colonies on Czapek's solution agar restricted, plane or somewhat wrinkled forming a rather compact felt (Fig. 32A1), with the marginal area near Scheele's green (R., Plate VI) from developing heads, older areas yellow-green to greenish gray and enmeshing large numbers of aborted cleisto thecia producing few ascospores; normal cleistothecia found only when the substrate dries out or colonies spread over the bare walls of the vessel. Reverse in shades of greenish yellow at colony margin to deep maroon or almost black in older areas.
Colonies on Czapek's solution agar with 20 per cent sucrose spreading broadly and often irregularly, attaining a diameter of 5 to 6 cm. in 2 weeks at room temperature (24-26°C), plane or slightly wrinkled, commonly characterized by broad zones or patches of dull green to gray-green conidial heads (Fig. 32A2) often alternating with orange-yellow areas more pre-dominantly cleistothecial; surface growth usually consisting of loosely woven hyphae studded with orange granules and enmeshing the yellow cleistothecia above which project the more or less abundant conidial heads, the whole colony and especially the marginal areas and adjacent wall of the culture dish commonly overgrown by a loose aerial network of hyphae bearing conidial heads and scattered cleistothecia; reverse varying from yellow-orange to deep maroon. Conidial heads abundant, radiate to very loosely columnar, varying in different strains from 125 to 200 µm in diameter, typically consisting of diverging chains of conidia radiating from a hemi spherical vesicular apex of the conidiophore (Fig. 33A) ; conidiophores smooth, mostly colorless, 500 to 1000 µm in length, broadening at the apex to a vesicular area about 25 to 40 µm in diameter, occasionally branched; sterigmata in one series 7 to 10 µm by 3.5 to 4.5 µm; conidia ovate to subglobose or globose, spinulose, variable in size from 4.5 to 7 or 8 µm but mostly 5.0 to 6.5 µm. Cleistothecia usually very aubndant, borne in loose networks of yellow to orange-red hyphae (Fig. 34A), yellow, spherical to subspherical, mostly 75 to 100 µm, occasionally up to 125 µm; asci 10 to 12 µm; ascospores lenticular, mostly 4.8 to 5.6 µm by 3.8 to 4.4 µm, smooth walled, with equatorial area rounded or somewhat flattened and occasionally indented showing a trace of furrow but without crests or ridges (Fig. 35A).
Colonies on M40Y agar grow even more rapidly, usually with enhanced development of aerial mycelium and conidial structures and with cleisto thecia maturing more rapidly than on the above substrates.


 
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