The genus Cladosporium

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Date: June 2012
From: Studies in Mycology(Vol. 72)
Publisher: Centraalbureau voor Schimmelcultures
Document Type: Report
Length: 22,259 words
Lexile Measure: 1670L

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127. Cladosporium pseudocladosporioides Bensch, Crous & U. Braun, Stud. Mycol. 67: 71.2010. Figs 257, 258.

Holotype: Netherlands, Zwolle, isol. from outside air, 7 Jan. 2007, M. Meijer (CBS H-20445). Ex-type cultures: CBS 125993 = CPC 14189, CPC 14193

Ill.: Bensch et al. (2010: 71-72, figs 60-61).

In vitro: Mycelium immersed and superficial; hyphae unbranched or sparingly branched, (0.5-)1-4 [micro]m wide, septate, sometimes constricted at septa, especially in wider ones, subhyaline to pale olivaceous or pale olivaceous-brown, smooth or almost so, walls sometimes slightly thickened, about 0.5 [micro]m wide, sometimes irregular in outline due to swellings and constrictions, sometimes forming small ropes of few hyphae, sometimes cells swollen, up to 6.5 [micro]m wide, fertile hyphae minutely verruculose, mainly at the base of conidiophores. Conidiophores macronematous, sometimes also micronematous, solitary or in small loose groups, arising terminally and laterally from hyphae or swollen hyphal cells, erect, straight to slightly flexuous, cylindrical-oblong, nonnodulose, sometimes once geniculate-sinuous or slightly swollen at the apex, unbranched or branched once or twice, occasionally three times, branches often only as short denticle-like lateral outgrowth just below a septum, 15-155 [micro]m long, 2-4 [micro]m, sometimes attenuated towards apex, 0-5-septate, sometimes slightly constricted at septa, pale to pale medium olivaceousbrown, sometimes paler towards the apex, smooth or almost so, at the base asperulate or finely verruculose like fertile hyphae, walls slightly thickened, about 0.5 [micro]m wide or unthickened; micronematous conidiophores filiform, narrower, not attenuated, about 1.8 [micro]m wide. Conidiogenous cells integrated, terminal, sometimes intercalary, slightly attenuated, narrowly cylindrical-oblong, sometimes once geniculate, non-nodulose, (6.5-)9-33 gm long, with 1-4 loci at the apex, occasionally with up to seven loci crowded at or towards the apex, in intercalary cells loci situated on small lateral peg-like outgrowths, 1-2(-3) loci, conspicuous, subdenticulate, 1-1.5(-1.8) [micro]m diam, somewhat thickened and darkened-refractive. Ramoconidia cylindrical-oblong, 19-48 x 3-4 [micro]m, 0-2(-3)-septate, pale olivaceous-brown, smooth, base broadly truncate, 2-3 [micro]m wide, unthickened or slightly thickened, sometimes slightly refractive. Conidia very numerous, catenate, in branched chains, branching in all directions with 3-6(-9) conidia in the terminal unbranched part of the chain, small terminal conidia obovoid, ovoid to limoniform or ellipsoid, sometimes subglobose, 3-5.5 x (1-)1.5-2.5 [micro]m (av. [+ or -] SD: 4.1 [+ or -] 0.7 x 2.1 [+ or -] 0.3), apex rounded or attenuated towards apex and base, intercalary conidia ovoid, limoniform to ellipsoid or subcylindrical, 4.5-13(-19) x (1.8-)2-3 [micro]m (av. [+ or -] SD: 8.8 [+ or -] 3.9 x 2.6 [+ or -] 0.3), 0(-1)-septate, slightly attenuated towards apex and base, with 1-4(-5) distal hila, secondary ramoconidia ellipsoid-ovoid to subcylindrical or cylindrical-oblong, (6.5-)8-23(-29) x (2-)2.5-3.5(-4) [micro]m (av. [+ or -] SD: 16.1 [+ or -] 5.1 x 2.9 [+ or -] 0.3), 0-1(-2)-septate, septum median or often somewhat in the lower half, pale olivaceous to pale olivaceous-brown, smooth or almost so, sometimes slightly rough-walled, walls unthickened, with (1-)2-4(-6) distal hila, conspicuous, subdenticulate, 0.5-1.5(-1.8) [micro]m diam, somewhat thickened and darkened-refractive; microcyclic conidiogenesis not observed.

Culture characteristics'. Colonies on PDA attaining 65-78 mm diam after 14 d, olivaceous-grey to grey-olivaceous, reverse...

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Gale Document Number: GALE|A473843697