The genus Cladosporium and similar dematiaceous ... - CBS - KNAW
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. 19. <strong>Cladosporium</strong> herbarum (CPC 11600). A. Overview of hyphal growth <strong>and</strong> conidiophore formation of a colony on SNA. Conidiophores are often formed on very wide<br />
(approx. 10 μm), septate hyphae that often grow near the agar surface. B. A more detailed view on colony organisation reveals the ornamented conidia. Note the septum near the<br />
conidiophore (arrow). C. Detail of spore ornamentation <strong>and</strong> hila on a secondary ramoconidium (arrow). Ornamentation is visible during early stages of spore formation (arrow).<br />
D. Structure of the conidiophore, illustrating the complex morphology of the spore-forming apparatus. In addition, secondary ramoconidia, conidia, <strong>and</strong> a hilum on the conidium<br />
are visible. E. Complex structure of the spore-forming apparatus. F. Details of secondary ramoconidia with complex scar-pattern on the right cell. G. Details of a secondary<br />
ramoconidium giving rise to conidia. Note the lack of ornamentation at the location of spore formation. Scale bars: A = 50 µm, B, F = 10 µm, C–E, G = 5 µm.<br />
Cultural characteristics: Colonies on PDA reaching 19–23 mm<br />
diam after 14 d at 25 ºC, pale greenish olivaceous, smoke-grey<br />
to olivaceous-grey due to abundant aerial mycelium, greenish<br />
olivaceous to olivaceous reverse, margin broad, regular, entire<br />
edge to slightly undulate, feathery, aerial mycelium abundantly<br />
formed, felty, fluffy, covering large parts of the colony, mainly in<br />
the central parts, high, growth low convex with a somewhat raised<br />
colony centre. Colonies on MEA reaching 9–23 mm diam after 14 d<br />
at 25 ºC, pale olivaceous-grey to olivaceous-grey, olivaceous-grey<br />
reverse, felty, margin slightly undulate, white, somewhat raised,<br />
aerial mycelium abundant, loose, diffuse, high, growth low convex,<br />
radially furrowed, slightly folded. Colonies on OA reaching 10–19<br />
mm diam after 14 d at 25 ºC, olivaceous, margin broad, undulate,<br />
white, aerial mycelium white, very high, loose, diffuse, hairy, growth<br />
flat, due to the mycelium low convex, without prominent exudates<br />
<strong>and</strong> sporulating on all media.<br />
Specimens examined: Isolated from Iris sp. (Iridaceae), <strong>CBS</strong> 107.20. France,<br />
Cote d’Or, Jardin de Noidan, on leaves of Iris germanica, Jul. 1880, F. Fautrey,<br />
Roumeguère, Fungi Sel. Gall. Exs. No. 5689, PC, lectotype of C. iridis, selected<br />
by David, 1997; K, isolectotype. Netherl<strong>and</strong>s, Boterenbrood, isolated from leaves<br />
of Iris sp., Aug. 1940, <strong>CBS</strong>-H 19859, epitype designated here of C. iridis, culture<br />
ex-epitype <strong>CBS</strong> 138.40.<br />
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