New Brunswick Mushroom Checklist > Extralimital records

Inocybe teraturgus M.M. Moser

Clustered amongst pleurozia and dicrana, growing in association with Picea mariana, Notre Dame Provincial Park, Newfoundland – collected by Tina Newbury (Malloch 14-09-08/01).

Pileus conic-convex at first, expanding to broadly convex and slightly depressed at centre at maturity, without an umbo, dry, densely squarrose-scaly, Brown to Dark brown (Methuen 6EF4), 18-26 mm in diameter. Stipe equal, Orange grey (6B2) and slightly pruinose at the immediate apex, concolourous with the pileus below, dry, appressed-fibrillose-scaly below, 36-42 X 3-4 mm. Lamellae Brownish orange to Greyish brown (5CD3) at first (but these are not very young), close, adnexed, not marginate. Cortina not seen. Flesh white in the pileus (but perhaps faded), white to Orange grey (6B2) in the stipe. Flesh with a spermatic odour.

Basidiospores forming a weak spore print that is difficult to characterize but probably fairly bright orange brown, ellipsoidal, conspicuously nodulose with >12 nodules, 8.0-10.1 x 6.2-7.9 μm, Q = 1.14-1.41 (average[31]: 8.9 x 7.0 μm, Q = 1.28). Cheilocystidia abundant, varying in shape from cylidrical to clavate to ventricose to sublecythiform, thin-walled, with apical crystals, 38-74 x 10-18 μm. Pleurocystidia not abundant, scattered, equally present at the edge and base of the lamellae, ventricose to sublecythiform, thin-walled, with apical crystals, 50-86 x 11-23 μm

Inocybe teraturgus is one of several species having a cap with upright (squarrose) scales and nodulose basidiospores. There are four other members of this group, distinguishable by the key provided in the page discussing I. stellatospora. Inocybe teraturgus is known In Canada from Ontario and, via this collection, Newfoundland and Labrador.

Like leptophylla, I. teraturgus has highly nodulose basidiospores that are strikingly different from other members of the group having nodulose basidiospores and squarrose caps and stipes. It differs from I. leptophylla in having pleurocystidia. The basidiospores are smaller than those reported in Funga Nordica and by Matheny & Kropp (Sydowia 53(1): 93-139. 2001). Funga Nordica and Moser (Persoonia 14 (4): 574. 1992) illustrate the pleurocystidia with thick walls, which was not observed in this material. It is possible that Collection 14-09-08/01 is only a representative of I. stellatospora with unusually low basidiospore nodules. For the present, however, we prefer to keep this collection separate.

Scan: D. Malloch (14-09-08/01).