Aliquandostipite khaoyaiensis Inderb., Am. J. Bot. 88(1): 54 (2001)
Notes : The genus was introduced by Inderbitzin et al. (2001) for two freshwater lignicolous ascomycetes collected in Thailand and China: A. khaoyaiensis Inderb., and A.sunyatsenii Inderb. (= Jahnula sunyatsenii ). The genus is characterized by sessile and/or stalked ascomata (dimorphic), wide mycelium, bitunicate asci, the presence of pseudoparaphyses and 1-septate ascospores with or without a sheath (Inderbitzin et al. 2001). Currently, five species are accepted in the genus: A. crystallinus Raja et al., A.khaoyaiensis , A. minuta Raja & Shearer, A. separans (Abdel-Wahab & El Sharouney) J. Campb. et al., and A. siamensis (Suetrong et al. 2011a). Shearer et al. (2009) showed that four Aliquandostipite species form a wellsupported monophyletic group. Strains of A. khaoyaiensis and A. siamensiae group together, with ascospore measurements in the same range. They differ in that the sheath in A. khaoyaiensis balloons out, while in A. siamensis it is narrow and ascospores in the latter are dimorphic: small and brown (33–45×10–13μm) or large (58–73×15–25μm) and hyaline to pale brown (Pang et al. 2002). Both types of ascospores, small and brown and large and hyaline to pale brown were observed in the same ascus in A. siamensis (Campbell et al. 2007). A combined analysis (SSU rDNA, LSU rDNA) of taxa in the Jahnulales showed that Aliquandostipite species formed a well-supported clade (Campbell et al. 2007), which is also supported in a larger study by Suetrong et al. (2011a).

Fig. Aliquandostipite khaoyaiensis (Material examined: a, c, d, g,j =ILLS A441-1; A441-2; b, e, f, h, i, k, l =F89-1). a Ascoma with a stalk. b Sessile ascoma on wood. c Longitudinal section of ascoma. d Peridial wall. e Longitudinal section of sessile ascoma. f Pseudoparaphyses. g Asci. h Dehiscing asci. i-l Ascospores with gelatinous sheath; stained with Indian ink in figure j and in aqueous nigrosin in figure l. Scale bars: a =40μm; b =500μm; c–l =20μm