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 Add this item to the list  Pleurotus pulmonarius (Fr.) Quél.
Page number:854 
Remarks (internal):Differentiation between P. pulmonarius and P. ostreatus is difficult. As we pointed out above, mating and molecular studies are necessary to separate them, however, the pileipellis in P. pulmonarius is thinner (20-40 µm), resulting in a more light-colored basidiocarp, whereas P. ostreatus has a thicker pileipellis (40-110 µm) and darker color. According to Hilber (1982) they may be distinguished by an anise odor in P. pulmonarius, but we could not perceive this feature. Instead, we could distinguish a sweet aromatic odor, different to the fungal one of P. ostreatus.
Based on observations of fruit bodies obtained from culture, we conclude that P. ostreatus specimens were stouter, with a more eccentric stem, against a lateral, rarely eccentric and less developed stem of the cultured P. pulmonarius specimens studied.
Regarding P. araucariicola, morphological studies of the holotype, as well as mating studies, revealed that it is clearly a synonym of P. pulmonarius (Lechner et al 2003).
Description type:Non-original description 
Description:Pleurotus pulmonarius (Fr.) Quél.
Champignons du Jura et des Vosges I; 113, pl. 4. FIG. 8. 1872.
Agaricus pulmonarius Fr. : Fr. 1821. Syst. Mycol. 1:187.
P. pulmonarius (Fr. : Fr.) Quél. 1872. Mém. Soc. Émull. Montbéliard 2, sér. 5:11.
P. ostreatus var. pulmonarius (Fr. : Fr.) Pilát. 1933. Bull. Trimest. Soc. Myc. Fr. 49:281.
P. araucariicola Sing. 1953. Lilloa 26:141.
Pileus 27-30 x 15-17 mm, flabelliform (figs. 9A, 11K, L), whitish to grayish (Munsell, HUE 7/1-7/2 5Y), very pale brown (Munsell, HUE 8/4 10YR) when dry, surface smooth, glabrous, shiny, gelatinous. Lamellae decurrent, crowded, 2-3 mm broad, cream, yellow (Munsell, 10YR 8/6) when dry, margin entire. Stipe eccentric to lateral, smooth, 2-10 mm long x 2-6 mm diam. Flesh 2-5 mm thick, less than 1 mm when dry, corky. Odor agreeable, aromatic, not anise-like.
Spores (6.8-)7.8-9.4(-10.9) x 2.6-3.6 µm Q = 2.8, cyASlindrical-oblong, hyaline, thin-walled, IKI- (FIG. 9B). Basidia 24-26 x 4.1-5.2 µm, club shaped, 4-spored (fig. 9D). Cheilocystidia absent. Numerous basidioles or pleurocystidia, 23-30 x 5-6 µm (fig. 9D). Hymenophoral trama completely irregular, with clamped, sclerified hyphae, 5.2-7.8 µm diam and thin-walled hyphae 3.5-10.4 µm diam; oleiferous hyphae not observed (fig. 9D). Context of pileus with generative hyphae 4.2-10.4 µm diam, thin- and thick-walled (FIG. 9C). Hyphae of stem generative, thick-walled 3.6-6.3 µm diam (fig. 9E). Pileipellis a cutis, 20-40 µm thick, not well differentiated, with hyphae parallel and radial arranged.
Culture characters. - Mycelium hyaline, whitish and arachnoid near inoculum. Later more white, cottony, with increasing aerial mycelium. Radial growth was generally observed; sometimes feathery. Margin irregular. Reverse of agar unchanged. Odor of bitter almonds. Mycelium covered Petri plates within 1-2 wk.
Advancing mycelium with clamped, thin-walled hyphae 1.5-6.2 µm diam, more branched in the center of the colony, with hyphae 2.1-7.8 µm diam and near inoculum 1.5-4.2 µm diam. Microdroplets 3.0-6.0 µm diam.
Geographic distribution. - Northeastern and east central Argentina.
Material studied. - Brazil, Serra, Taimbesino, 5-XI-1951, leg. R. Singer B 89 (BAFC 51.061), holotype of P. araucariicola Sing.
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