[GS] Pileus 3-10 mm. diam., pale greyish fawn, striate-sulcate at margin campanulate with or without an umbo, silky; flesh thin, fragile. Gills adnate or sinuately adnexed, creamy white at first becoming pink with whit margins, moderately crowded. Stipe 2-7 cm. x 1 mm., whitish above, ochraceous fawn below, hollow, fragile, silky smooth, with spreading hyphal hairs at base. Spores 9-10 x 6-7um, amyloid, narrower at apicular end. Hymenophoral trama and tissue of pileus strongly pseudo-amyloid. Cheilocystidia 25-35 x 5-10um, more or less violin-shaped (Fig. 2/48, p. 37). Cuticle somewhat gelatinized repent hyphae with branched endings. HABITAT : singly attached to leaves of litter under planted deciduous trees and indigenous shrubs, Nelson, 6.5.1957, Stevenson (type). [JAC] Stipe diverticulae similar to M. leptocephala. Also has very distinct septa that are highlighted in melzers. 4 and 2 spored. No cystidia are violin shaped. No other PDD material I have seen labelled M. subfragillima is this. The type comes from Queen's Gardens, a highly mofified habitat.Like a number of Stevenson's collections from modified habitats this this appears to be M. olivaceomarginata, or close. spores length=8.6–11.7µm (µ=9.5, σ=0.76), width=5.4–7.3µm (µ=6.1, σ=0.43), Q=1.4–1.9µm (µ=1.57, σ=0.12), n=20.

[Notes from Kew Type specimen, PRJ 2010] Kew images.

Pileus 3-10 mm diam., pale greyish fawn, striate-sulcate at margin, campanulate with or without an umbo, silky; flesh thin, fragile. Gills adnate or sinuately adnexed, creamy white at first becoming pink with white margins, moderately crowded. Stipe 2-7 cm. x 1 mm, whitish above, ochraceous fawn below, hollow, fragile, silky smooth, with spreading hyphal hairs at base. Spores 9-10 x 6-7 µm, amyloid, narrower at apicular end. Hymenophoral trama and tissue of pileus strongly pseudo-amyloid. Cheilocystidia 25-35 x 5-10 µm, more or less violin-shaped (Fig. 48). Cuticle of somewhat gelatinized repent hyphae with branched endings.

Singly attached to leaves of litter under planted deciduous trees and indigenous shrubs, Nelson, 6.5.1957, Stevenson (type).

Pileus 3-10 mm diam., pallide griseo-hinnuleus, margine striato-sulcatus, campanulatus, interdum umbonatus, sericeus; caro tenuis, fragilis. Lamellae adnatae vel sinuato-adnexae, primum cremeo-albae, deinde puniceae marginibus albis, modice confertae. Stipes 2-7 cm. x 1 mm, superne albidus, inferne ochraceo-hinnuleus, cavus, fragilis, sericeo-laevis, basi pilis hyphalibus patentibus praeditus. Sporae 9-10 x 6-7 µm, amyloideae, apiculum versus angustiores. Trama hymenophoralis et pilei textura valde pseudo-amyloidea. Cheilocystidia 23-35 x 5-10 µm, plus minus constricto-utriformia, longi-appendiculata. Cuticula ex hyphis repentibus gelatinatis sistentia, terminationibus incrassatis.

Typus: Stevenson 1215.