Skip to main content

Table 3 Distinguishing features of species in Bettsia and Xerochrysium.

From: Xerochrysium gen. nov. and Bettsia, genera encompassing xerophilic species of Chrysosporium

Species CYA, MEA G25N (mm) Colony size (mm) and morphology on MY50G Dominant microscopic morphology from MY50G Colony size (mm) and morphology on CZC50G
Bettsia alvei No growth 1–20 (7 d) 15–35 (7 d); p ]40–65 (14 d) Colonies persistently white with a pale reverse; or black with a black reverse in the presence of cleistothecia Solitary aleurioconidia 8–26 mm (14d) Sparse, hyaline
B. fastidia No growth 1–5 (7 d) 15–22 (7 d); p ]35–42 (14 d) Colonies dull yellow to yellow brown; reverse yellow brown Solitary aleurioconidia 21–26 mm (14d) Sparse, hyaline
Xerochrysium dermatitidis No growth — 3 mm 1–9 (7 d) 4–10(7d); p ]12–20 (14 d) White or translucent Chlamydo- and arthroconidia 18 mm (14d) Dense, white, slightlyfloccose, reverse cream-yellow reverse, occasionally red (Kinderlerer 1995)
X. xerophilum No growth — 3 mm 1–9 (7 d) 9–20 (7 d); p ]20–38 (14 d) White; reverse white or pale yellow to apricot, khaki Chlamydo- and arthroconidia 40–43 mm (14 d) Dense, white, slightly floccose, reverse cream-yellow to khaki-yellow