Marasmius aff. curreyi
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publication ID |
https://doi.org/ 10.11646/phytotaxa.292.2.1 |
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persistent identifier |
https://treatment.plazi.org/id/03B587A8-766C-FF86-FF5A-17E9B635F93C |
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treatment provided by |
Felipe |
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scientific name |
Marasmius aff. curreyi |
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10. Marasmius aff. curreyi View in CoL ( Fig. 6 View FIGURE 6 , Plate 2 View PLATE 2 )
Description:— Pileus 2–7 mm diam, campanulate, umbilicate, with a dark brown papilla; margin plicate to sulcate; surface dry, glabrous; tan to light brown with greyish tones (6D6) or cream (5A2) becoming paler at the margin. Context thin, white. Lamellae adnate to a collarium, distant (10–11), no lamellulae, narrow (0.3–0.5), white to cream, non-marginate. Stipe 5–30 × <0.5 mm, central, cylindrical, hollow, wiry, insititious; surface glabrous; dark brown. Odor and taste not distinctive.
Basidiospores (7.2–) 8–9.6 × 4–4.8 μm [x m = 9.02 ± 0.71 × 4.29 ± 0.37 μm; Q = 1.80–2.40; Q m = 2.11 ± 0.20, n = 25, s = 1], ellipsoid, smooth, hyaline, inamyloid, thin-walled. Basidia 4–14.4 μm, clavate to cylindrical, 4-spored, hyaline, inamyloid, thin-walled; sterigmata 0.8 × 0.2 μm. Basidioles 12–20 × 4.8–8 μm, clavate to cylindrical, hyaline, inamyloid, thin-walled. Cheilocystidia not observed. Pleurocystidia absent. Pileipellis mottled, a hymeniform layer of Siccus - type broom cells; main body 8–16 × 6.4–8.8 μm, clavate, hyaline, inamyloid, thin-walled; apical setulae 0.8– 2.4 × 0.8–1.6 μm, cylindrical to conical, brown to hyaline, inamyloid, thin-walled. Pileus trama interwoven; hyphae 2.4–8.8 μm diam, cylindrical to inflated, smooth, hyaline, inamyloid, thin-walled. Lamellar trama regular; hyphae 2.4–12 μm diam, cylindrical, smooth, hyaline, dextrinoid, thin-walled. Stipe tissue monomitic; cortical hyphae 2–8 μm diam, parallel, cylindrical, smooth, dark brown to brownish yellow, sometimes dextrinoid, thin-walled; medullary hyphae 2–6 μm diam, parallel, cylindrical, smooth, hyaline, weakly dextrinoid, thin-walled. Caulocystidia absent. Clamp connections present.
Habit, habitat, and known distribution:—Solitary to gregarious on stems of Justicia ( Acanthaceae ). Madagascar.
Material examined:— MADAGASCAR.Region Vatovavy-Fitovinany,District Ifanadiana,Commune Ranomafana, Ranomafana National Park, Circuit Vohiparara, elev. 1062 m, GPS: 21˚ 14.255’ S, 47˚ 23.409’ E, 21 January 2014, J.E. Shay 135 (SFSU).
Notes:—Distinctive features of Madagascar populations of Marasmius aff. curreyi are a rather small (2–7 mm diam) tan to light brown pileus with yellowish brown tones that soon fades to tan, distant (10–11) collariate non-marginate lamellae, a relatively short (<30 mm) stipe, basidiospores in the range 8–9.6 × 4–4.8 μm, and growth on dead stems. An ITS sequence of material from Madagascar (KX148980) identified as M. curreyi by Antonín & Buyck (2006) was only 96.3% similar to JES 135 (KX149008). The latter Madagascar sequence, however, was nearly indistinguishable from material determined as M. curreyi from Korea (FJ936152) ( Fig. 1c View FIGURE 1 ). Although the morphology of the Madagascar material is similar to that of M. curreyi , this species was described originally from England and no sequences of U.K. or European material determined as M. curreyi are available for comparison. Accordingly, we recognize our material as M. aff. curreyi .
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