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 Add this item to the list  Pleurotus musae sp. nov. Figure 35
   
Description type:Original description 
Description:Pleurotus musae sp. nov. Figure 35
Ins. Solomonenses. Typus, RSS 1693 in Herb. Corner.
White, watery subgelatinous. Pileus -3.5 cm wide, convex then plane and undulate, subumbonate, opaque, appressedly silky fibrillose, at first minutely silky villous. Stem 3-8 x 1.5-2.5 mm, excentric, appressedly silky fibrillose, somewhat strigose fibrillose at the base; no ring. Gills shortly decurrent, subdistant, 22-25 primaries -3 mm wide, 3 ranks, thin, sometimes joined. Flesh 1-2 mm thick in the centre of the pileus, at first firm then watery and subgelatinous. Smell strong, farinaceous.
On the dead leaf-bases of wild Musa, caespitose imbricate with a thin white mycelium. Solomon Isl. Guadalcanal, Sutu Kiki, 700 m alt., (above Tambalusu), RSS 1693, 30 Oct. 1965.
Spores 2.5-3 x 2-2.5 µm, white, smooth, broadly ellipsoid to subglobose, not amyloid. Basidia 11-13 x 3.5-4 µm; sterigmata 4; no acerose basidioles; subhymenium very narrow, submucilaginous, with 23 µm interwoven hyphae; hymenium submucilaginous. Cystidia none, the gill-edge fertile.
Hyghae monomitic, clamped, not inflating, 1.5-5 µm wide, with slightly thickened submuci; aginous walls, short-celled.
Gill-trama with descending hyphae, then interwoven. Surface of pileus and stem with appressed hyphae, rather closely adherent, no Cystidia; mycelial hyphae at the base of the stem 2-3 µm wide, clamped, subfasciculate.
In the cumbersome and inconsequential keys developed by Singer (1975) this comes to ResupÀ¸natus where it does not fit either subgenus. As it is obviously a reduced Pleurotus, in spite of its submucilaginous tissue, I prefer to keep it in this genus. Material in alcohol-formalin is hyaline and submucilaginous.
 
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