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

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

Fig. 17. <strong>Cladosporium</strong> herbarum (CPC 11600). Macro- <strong>and</strong> micronematous conidiophores <strong>and</strong> conidia. Scale bar = 10 µm. K. Schubert del.<br />

Literature: de Vries (1952: 71), Hughes (1958: 750), Ellis (1971:<br />

313), Domsch et al. (1980: 204), Sivanesan (1984: 225), Ellis &<br />

Ellis (1985: 290, 468, 1988: 168), Prasil & de Hoog (1988), Wang<br />

& Zabel (1990: 202), McKemy & Morgan-Jones (1991), Dugan &<br />

Roberts (1994), David (1997: 59), Ho et al. (1999: 129), de Hoog et<br />

al. (2000: 587), Samson et al. (2000: 110), Samson et al. (2001).<br />

Notes: De Vries (1952) incorrectly selected a specimen of Link’s<br />

herbarium at herb. B as lectotype. Prasil & de Hoog (1988) discussed<br />

this typification <strong>and</strong> designated one of Persoon’s original specimens<br />

as lectotype in which C. herbarum could be recognised. <strong>The</strong> latter<br />

material, which is in poor condition, could be re-examined within<br />

the course of these investigations <strong>and</strong> showed conidia agreeing<br />

with the current species concept of C. herbarum being (6–)9.5–<br />

14.5(–21) × (5–)6–7(–8) µm. Since the identity of the strain <strong>CBS</strong><br />

177.71 chosen by Prasil & de Hoog (1988) as representative living<br />

strain of C. herbarum could not be corroborated, an epitype with<br />

a living ex-epitype culture is designated. <strong>The</strong> holotype specimen<br />

of D. tassiana (RO) is morphologically <strong>similar</strong> to that observed on<br />

the epitype of C. herbarum, having ascospores which are (17–)21–<br />

www.studiesinmycology.org<br />

23(–25) × (6–)7–8(–8.5) µm, turning brown <strong>and</strong> verruculose in asci<br />

with age. However, no hamathecial remnants were observed in<br />

ascomata in vivo.<br />

<strong>The</strong> connection to the teleomorph D. tassiana could be<br />

confirmed, which is in agreement with the findings of von Arx (1950)<br />

<strong>and</strong> Barr (1958). Ascospore isolates formed the typical C. herbarum<br />

anamorph in culture, <strong>and</strong> these anamorph cultures developed<br />

some immature fruiting bodies within the agar. When inoculated<br />

onto water agar plates with nettle stems, numerous ascomata with<br />

viable ascospores were formed in culture.<br />

<strong>Cladosporium</strong> iridis (Fautrey & Roum.) G.A. de Vries, Contr.<br />

Knowl. Genus <strong>Cladosporium</strong>: 49. 1952. Figs 20–21.<br />

Basionym: Scolicotrichum iridis Fautrey & Roum., Rev. Mycol.<br />

(Toulouse) 13: 82. 1891.<br />

≡ Heterosporium iridis (Fautrey & Roum.) J.E. Jacques, Contr. Inst. Bot.<br />

Univ. Montréal 39: 18. 1941.<br />

For additional synonyms see Dugan et al. (2004).<br />

Teleomorph: Davidiella macrospora (Kleb.) Crous & U. Braun,<br />

Mycol. Progr. 2: 10. 2003.<br />

125

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