Awide variety of mycorrhizal fungi have been reported to be associated with the achlorophyllous orchids, including Cephalanthera austinae A. Heller with Thelephoraceae (Taylor and Bruns 1997), Erythrorchis ochobiensis (Hayata) Garay (syn. Galeola altissima Rchb.f.) with Erithromyces crocicreas (Berk. Et Br.) (Umata 1995), Galeola septentrionalis Rchb.f. with Armillaria spp. (Terashita and Chuman 1987), Gastrodia elata Blume with Armillaria mellea (Vahl. Fr.) Karst. (Lan et al. 1994) and Hexalectris spicata Barnhart with Sebacinaceae (Taylor et al. 2003). In E. roseum, Yamato et al. (2005) identified the mycorrhizal fungi to be Coprinus spp. and Psathyrella spp. (family: Coprinaceae). Most achlorophyllous orchids have no relationship with Rhizoctonia, the common fungal partner of chlorophyllous orchids, a fact explained by Taylor and Bruns (1999) as dependent on the evolution to myco-heterotrophy during which most mycotrophic orchids changed their symbionts from Rhizoctonia to other fungi to acquire stable carbon sources.