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The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

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<strong>Cladosporium</strong> herbarum species complex<br />

Fig. 37. <strong>Cladosporium</strong> subinflatum (CPC 12041). Macro- <strong>and</strong> micronematous conidiophores <strong>and</strong> conidia. Scale bar = 10 µm. K. Schubert del.<br />

<strong>Cladosporium</strong> subinflatum K. Schub., Zalar, Crous & U. Braun,<br />

sp. nov. MycoBank MB504579. Figs 37–39.<br />

Etymology: Refers to its nodulose conidiophores.<br />

Differt a Cladosporio bruhnei conidiophoris cum nodulis angustioribus, 3–6.5 µm<br />

latis, conidiis brevioribus, 4–17(–22) µm longis, spinulosis, cum spinulis ad 0.8 µm<br />

longis; et a Cladosporio spinuloso conidiophoris nodulosis, conidiis spinulosis, cum<br />

spinulis brevioribus, ad 0.8 longis, locis conidiogenis et hilis latioribus, (0.5–)1–2<br />

µm latis.<br />

Mycelium unbranched or occasionally branched, 1.5–3 µm wide,<br />

later more frequently branched <strong>and</strong> wider, up to 7 µm wide,<br />

septate, not constricted at the septa, hyaline or subhyaline, almost<br />

smooth to somewhat verruculose or irregularly rough-walled, walls<br />

unthickened. Conidiophores mainly macronematous, sometimes<br />

also micronematous, arising terminally from ascending hyphae<br />

or laterally from plagiotropous hyphae, erect or subdecumbent,<br />

straight or flexuous, sometimes bent, cylindrical, nodulose, usually<br />

with small head-like swellings, sometimes swellings also on a<br />

lower level or intercalary, occasionally geniculate, unbranched,<br />

occasionally branched, (5–)10–270 × (1.5–)2.5–4.5(–5.5) µm,<br />

www.studiesinmycology.org<br />

swellings 3–6.5 µm wide, aseptate or with few septa, not constricted<br />

at the septa, pale brown, pale olivaceous-brown or somewhat<br />

reddish brown, smooth, usually verruculose or irregularly roughwalled<br />

<strong>and</strong> paler, subhyaline towards the base, walls thickened,<br />

sometimes appearing even two-layered, up to 1 µm thick.<br />

Conidiogenous cells integrated, usually terminal or conidiophores<br />

reduced to conidiogenous cells, cylindrical, nodulose, usually with<br />

small head-like swellings with loci confined to swellings, sometimes<br />

geniculate, 5–42 µm long, proliferation sympodial, with several loci,<br />

up to four situated at nodules or on lateral swellings, protuberant,<br />

conspicuous, denticulate, (0.8–)1–2 µm diam, thickened <strong>and</strong><br />

darkened-refractive. Conidia catenate, in branched chains, more<br />

or less straight, numerous globose <strong>and</strong> subglobose conidia, ovoid,<br />

obovoid, broadly ellipsoid to cylindrical, 4–17(–22) × (2.5–)3.5–<br />

5.5(–7) µm [av. ± SD, 11.7 (± 4.6) × 4.5 (± 0.8) µm], 0–1(–2)-<br />

septate, not constricted at septa, pale brown or pale olivaceousbrown,<br />

ornamentation variable, mainly densely verruculose to<br />

echinulate (loosely muricate under SEM), spines up to 0.8 µm<br />

high, sometimes irregularly verrucose with few scattered tubercles<br />

143

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