Pileus almost membranaceous, convex, erect at first, then frequently upturned with the gills uppermost, rather wrinkled, mealy, whitish, or tinged brown, 0.5-1 cm. diameter; gills adnexed, rather broad, few in number, rather thick and rigid, plane, not connected by veins; spores pip-shaped, 7 x 4 µ; stem 2-3 mm. long, slender, mealy.

Pohangina River, New Zealand. Tasmania, Australia.

On dead stems of Rhipogonum.

Sometimes growing horizontally with the pileus uppermost, and standing out from the matrix like one valve of a tiny bivalve shell. Gregarious.

The type specimen at Kew has been examined and the following; description applies to it: Pileus 5-10 mm diam., pinkish sepia, furfuraceous, orbicular to reniform. Gills adnate pinkish fawn, moderately distant. Stipe 2-3 x 0.5 mm, pinkish sepia, farinaceous, excentric, curved, inserted in dead wood. Spores 8-10 x 4-5 µm, non-amyloid. Hymenophoral trama non-amyloid. Cuticle of pseudoamyloid globe cells. The New Zealand material referred to this species by Massee (1898), and preserved at Kew, is not of Marasmius but appears to belong to the Laschia complex. Massee's statement that the gills are sometimes uppermost is incorrect. The writer has no herbarium specimens of M. subsupinus, but considers that a small stalked bracket agaric, commonly seen on standing dead wood in New Zealand, is referable to this species. More collections are needed. M. inversus Massee in Trans. N.Z. Inst. 31: 343 (1898) appears to be identical, though the spores of the type, which has been examined at Kew slightly smaller, 6-8 x 4-5 µm Massee's claim that the gills are uppermost appears insupportable, and may have been due to a lack of understanding of the habit of growth.

The type specimen at Kew has been examined and the following; description applies to it: Pileus 5-10 mm diam., pinkish sepia, furfuraceous, orbicular to reniform. Gills adnate pinkish fawn, moderately distant. Stipe 2-3 x 0.5 mm, pinkish sepia, farinaceous, excentric, curved, inserted in dead wood. Spores 8-10 x 4-5 µm, non-amyloid. Hymenophoral trama non-amyloid. Cuticle of pseudoamyloid globe cells. The New Zealand material referred to this species by Massee (1898), and preserved at Kew, is not of Marasmius but appears to belong to the Laschia complex. Massee's statement that the gills are sometimes uppermost is incorrect. The writer has no herbarium specimens of M. subsupinus, but considers that a small stalked bracket agaric, commonly seen on standing dead wood in New Zealand, is referable to this species. More collections are needed. M. inversus Massee in Trans. N.Z. Inst. 31: 343 (1898) appears to be identical, though the spores of the type, which has been examined at Kew slightly smaller, 6-8 x 4-5 µm Massee's claim that the gills are uppermost appears insupportable, and may have been due to a lack of understanding of the habit of growth.