Biological Species in Pleurotus
INTERSTERILITY GROUP
ISG XV: Pleurotus purpureo-olivaceus (Stevenson) Segedin et al.
1995. Austral. Syst. Bot. 8: 471. 1995. Austral. Syst. Bot. 8: 471.
Nomenclatural history: Segedin et al (1995) recombined Stevenson’s Resupinatus purpureo-olivaceus (1964. Kew Bull. 19: 21).
Taxonomic history: Segedin (1984. Tane 30: 235) proposed Pleurotus rattenburyi, which Segedin et al. (1995) later placed in synonymy under P. purpureo-olivaceus.
Genetic isolation history: Segedin et al. (1995) reported that P. purpureo-olivaceus was incompatible with P. australis, P. "opuntiae" (probably P. djamor), P. pulmonarius, and P. ostreatus (isolates from USA). Petersen and McCleneghan (1995) reported that New Zealand collections were compatible with Australian isolates.
Mating system (see Petersen, 1992): tetrapolar.
Self-cross (see Petersen, 1992): NEW ZEALAND, South Island, Fiordland, Monowai, Borland Track Lodge, 19.V.90, coll. RHP, Tennessee tracking number 2669 (TENN 48869; PDD 9630). Tester strains: 2669:12 = A1B1; 2669:4 = A2B2; 2669:6 = A2B1; A1B2 not represented. (collection 2554 = TENN 48868 also self-crossed). Petersen and McCleneghan (1995) used Australian specimens for two self-crosses.
Anamorphic state: Petersen (1992) reported production of a few arthroconidia, but Segedin et al. (1995) reported that coremioid arthroconidiophores were commonly produced on basidiome stipe surfaces and on associated basal mycelium. Unfortunately, this report of such an anamorphic state has not been confirmed by Petersen (1992), Petersen and McCleneghan (1995) Zervakis (1998) or Vilgalys (in Zervakis, 1998).