Inosperma calamistratum
Mycologia 112(1): 94. 2020
Common Name: none
Synonyms: Agaricus calamistratus Fr.; Inocybe calamistrata (Fr.) Gillet
For description see Murrill et al. & 'California Mushrooms'.
Solitary to scattered in soil under conifers, occasionally with hardwoods; uncommon, fruiting from late fall through winter in northern coastal forests.
Probably toxic.
Inosperma calamistratum can be distinguished by a scaly brown cap, cinnamon-brown to brown gills, a fibrillose-scaly stipe with a greenish blue to olivaceous gray base, thin-walled cheilocystidia, and lack of pleurocystidia. The scaly brown cap and stipe are similar in Inocybe lanuginosa, but it lacks a greenish gray stipe base and has nodulose spores. The combination of greenish gray shades on the stipe base and pale vinaceous discoloration of exposed context are reminiscent of Inocybe corydalina, but it has a smoother cap with a thin white velipellis when young, a broader (10–20 mm) silky white stipe, and a strong spicy odor.
Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Knudsen, H. & Vesterholt, J. ed. (2008). Funga Nordica: Agaricoid, boletoid and cyphelloid genera. Nordsvamp: Copenhagen, Denmark. 965 p.
Knudsen, H. & Vesterholt, J. ed. (2012). Funga Nordica: Agaricoid, boletoid, clavarioid, cyphelloid and gastroid genera. Vol. 2. Nordsvamp: Copenhagen, Denmark. 572 p.
Matheny, P.B., Hobbs, A.M. & Esteve-Raventós, F. (2020). Genera of Inocybaceae: New skin for the old ceremony. Mycologia 112(1): 83-120.
Murrill, W.A., Kauffman, C.H. & Overholts, L.O. (1924). North American Flora: Agaricales, Agaricaceae (pars). 10(4): 227-276. (PDF)
