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Remarks (internal):Cantharellula umbonata is the type of the genus. It is a common northern hemisphere species usually found associated with mosses, especially the Polytrichaceae on recently recolonized disturbed sites. It has been recorded on needle beds also, as observed by us occasionally, but this usually was noted in maturing plantations where previously extant moss beds had existed and were shaded out. Evidently residual mycelium of C. umbonata can exist without living mosses. A culture derived from basidioma tissues is deposited in DAOM.
Bigelow (1975, Beih. Nova Hedw. 51: 68-70, fig. 3) provided a recent redescription and illustration from North American materials. He indicated that C. umbonata was common in the northeastern U.S. and the Great Lakes region, lacking in the Smokies, rare in the west, and not known on the pacific coast. Similar distributions are given by Lincoff (1981, The Audubon Society Field Guide to North American Mushrooms, A.A. Knopf, N.Y. p. 741, pl. 97), Murrill (1910, N. Amer. Fl. 9: 170-171), and Miller (Mushrooms of North America, E.P. Dutton & Co., N.Y. 1972 p. 152, pl. 262). Hesler (Castanea 2: 53. 1937) however, had recorded it from the Great Smoky Mountains and the species is known to occur along the pacific coast in British Columbia and north to the Yukon (spec. exam.) and in south-central Alaska (Wells & Kempton, A checklist of some fleshy fungi of Alaska, mimeographed, no date).
The first records for Canada by province were by: Hay (Bull. Nat. Hist. Soc. N.B. 5: 116. 1903) for New Brunswick; Bisby (Mycologia 16: 128. 1924) for Manitoba; Bell (Trans. Roy. Can. Inst. 19: 277. 1933) for Ontario; Groves (Can. Field-Nat. 52: 58. 1938) for Quebec; and Wehmeyer (The fungi of New Brunswick, Nova Scotia, and Prince Edward Island, Natl. Res. Council, Ottawa 1950, p. 81) for Nova Scotia. Guzman (An. Esc. nac. Cienc. biol., Mex. 10: 25. 1961) recorded it from pine and oak forests in Mexico.
The species is known also from Europe (e.g. Moser, Die Röhrlinge und Blätterpilze, G. Fischer, Stuttgart, 1983, p. 136), central Asia (Nezdojminogo, Nov. Syst. Pl. non Vascul. 13: 107. 1976) and Japan (Imazeki & Hongo, Coloured Illustrations of Fungi of Japan II. Hoikusha Publ. Co., Osaka. 1972. p. 25, pl. 7 fig. 41), thus indicating a circumboreal distribution.
The mention of Geopetalum carbonarium (Alb. & Schw.: Fr.) Pat. as a synonym of C. umbonatum by Miller (I.c.) was a lapsus calami. The former is the type of the endemic European genus Faerberia Pouzar (Ceská Mykol. 35: 185-187. 1981) and has long been known to have a dimitic hyphal system, metuloids, and nonamyloid spores (Corner, A monograph of Cantharelloid fungi. Oxford Univ. Press, London. 1966. p. 105-111).
 
Description type:Non-original description 
Description:Cantharellula umbonata (Gmelin: Fr.) Singer, Ann. Mycol. 34: 331. 1936.
= Agaricus muscoides Jacquin, Misc. Austr. Bot. Chem. Hist. Natur.2: 109. 1781.
= Cantharellus muscoides (Jacq.) Schroeter, Krypt. Fl. Schles.p. 511. 1888.
= Merulius umbonatus Gmelin, Syst. Nat. Linn., 13th ed. 2(2): 1430. 1792. Nomen novum for Agaricus
muscoides Jacq.
= Cantharellus umbonatus (Gmelin: Fr.) Fries, Syst. Mycol. 1: 317. 1821.
= Clitocybe umbonata (Gmelin: Fr.) Konrad, Bull. Soc. Mycol. Fr.47: 146. 1931.
= Hygrophoropsis umbonata (Gmelin: Fr.) Kühner & Romagnesi, Flore Analytique des Champignons
superieurs, p. 130. Masson & Cie, Paris 1953. Comb. invalid. (Art. 33.2 ICBN).
= Cantharellus dichotomous Peck, N.Y. State Cab. Ann. Rept. 23: 123. 1872.
= C. umbonatus var. dichotomous (Peck) Peck, ibid.
= Agaricus molliculus Britzelmayer, Jahresbericht Nat. Ver. Augsburg 29: 147. 1885. fide Stangl & Bresinsky
(Zeit. Pilzk. 35: 48. 1969).
= C. dichotomous var. brevior Peck, N.Y. State Mus. Bull. 2: 36. 1887.
= C.. umbonatus var. brevior (Peck) Peck, ibid.
= Cantharellus umbonatus var. subcaeruleus Peck, N.Y. State Mus. Bull.2: 36. 1887.
Pileus: 7-42 mm wide, acutely conical to broadly convex with incurved margins when young, later becoming plane, convex or infundibuliform and with or without a small acute to obtuse umbo, initially with a soft texture like kid-leather, becoming firmer and rugose with age, otherwise glabrous, dry, pale mouse grey or buff to vinaceous buff, becoming smokey grey to mouse grey with age or handling, occasionally tinted greenish glaucous to olivaceous or dark citrine and vaguely concentrically zoned; margin remaining incurved, even, becoming broadly wavy to highly convoluted and scalloped in some collections; context whitish to pale grey or buff, occasionally pale olivaceous near margins, slowly becoming rosy buff on exposure in some cases; taste not distinctive; odor faintly of cucumbers, or fragrant or not distinctive. Lamellae: decurrent, white to buff or straw, narrow, crowded to sub-crowded, with 1-3 dichotomies, staining dark brick to sienna in small patches, with age sometimes becoming luteous to ochreous on the edges near the pileus margin. Stipe: (1.7-)5.5-7.2 cm long, (2.5-) 3-7 mm wide apically, equal or tapering either up or down slightly, terete, occasionally becoming flattened and puckered or furrowed and twisted with age, initially soft like the pileus, velvety and in some, finely striate apically, minutely roughened to finely striate-rimose with age, whitish to buff or vinaceous buff apically, pink to rosy buff in koh, salmon to rosy buff below, occasionally isabelline to citrine tinted and developing an iridescent sheen; context fleshy-tough; stuffed to fistulose; base covered with copious white cottony mycelium.
Pileipellis: hyphae loosely interwoven, repent, non-inflated, clamped 3.5-7.5 µm diam.; the walls thin, smooth, some finely incrusted, most tinted faintly grey. Pileus trama: hyphae similar, interwoven, most hyaline, some finely incrusted. Lamellar trama: hyphae similar, interwoven, 3.5-5.5 µm diam.; subhymenium well developed, similar to above but hyphae tending to be oriented perpendicular to the tramai hyphae. Basidia: elongate-clavate, thin-walled smooth, hyaline, often containing a number of refractive oil bodies, 4-spored, 28-35 x 5-6.5 µm. Basidiospores: (7.8-) 8.5-10(-11.1) x (2.5-)3-3.5(-4.2) µm, thin-walled, smooth, hyaline, white in mass, amyloid, 1-3 guttulate, narrowly cylindrical to fusoid-cylindrical, slightly inequilateral; apiculus moderately prominent. Stipe trama: hyphae parallel, mostly slightly inflated, clamped, smooth, hyaline, 5-12.5 µm diam.; walls slightly thickened caulopellis: hyphae similar, noninflated, 3-3.5 µm diam.; sparsely covered with loose hyphae apically. Basal mycelium: loosely interwoven, noninflated, thin-walled, smooth, hyaline, clamped, 3-5 µm diam.
Habitat: Among mosses, especially Polytrichum, often on peaty or sandy soils, often in disturbed sites.
Distribution: Newfoundland, Nova Scotia, New Brunswick, Quebec, Ontario, Manitoba, Alberta, British Columbia, Yukon Territory.
 
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