TABLE 3.

Distinctive morphological features, based on oatmeal cultures at 25°C after 7 days in alternating light/darkness of well-characterized Acremonium species found in clinical samples

Order	Species	Colonies	Conidia	Other distinctive features
Sordariales	A. atrogriseum	Pale ochre-brown to brownish-black	Obovoid or ellipsoidal, smooth, subhyaline to dark gray, in slimy heads or in chains	Phialides flask-shaped, occasionally with a marked inflated base; sclerotia and chlamydospores absent
Hypocreales	A. fusidioides	White to ochraceous-brown, often reddish	Two types: (i) fusiform, smooth, and thin-walled, in long dry chains, more numerous, and (ii) spherical, thick and warty-walled, in loose chains	Sclerotia and chlamydospores absent
	A. persicinum	Whitish to ochre brown	Obovoid, with slightly protruding and truncate base, usually smooth, hyaline, slimy heads or in chains	Sclerotia and chlamydospores absent
	A. polychromum	Ochre brown	Obovoid, with a pointed base, smooth to rugose, olivaceous-brown, in dry chains	Phialides often with incrusted pigment near the tip; sclerotia and chlamydospores absent
	A. kiliense	Dirty white to pale orange	Ellipsoidal to cylindrical, straight or curved, smooth-walled, hyaline, in slimy heads	Chlamydospores present after 7 days, globose to ellipsoidal, thick-walled, intercalary, or terminal; adelophialides present; sclerotia absent
	A. zeae	White to pink	Cylindrical with rounded ends, smooth, hyaline, in slimy heads	Conidiophores usually several times branched; sclerotia and chlamydospores absent
	A. glaucum	Intense gray-green to bluish-green	Fusiform, smooth-walled, weakly pigmented (grayish-green), in long dry chains	Sclerotia and chlamydospores absent
	A. implicatum	Whitish to pinkish	Fusiform with sharply pointed ends, hyaline, in long dry chains	Sclerotia and chlamydospores absent
	A. egyptiacum-A. sclerotigenum	Pale ochre to light pink	Obovoid, cylindrical or slighly fusiform, smooth, hyaline, or pale greenish, in chains or mostly collapsing in heads	Submerged sclerotia present after 2 to 4 weeks; chlamydospores occasionally produced