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Features of Mycena marasmielloides (DED 5690 – Holotype). a. Basidiomes. b. Basidiospores. c. Basidia and basidiole. d. Cheilocystidia. e. Pileipellis terminal cells. f. Stipe cortical hyphae. Bar: a 5 10 mm, b–f 5 10 mm.  

Features of Mycena marasmielloides (DED 5690 – Holotype). a. Basidiomes. b. Basidiospores. c. Basidia and basidiole. d. Cheilocystidia. e. Pileipellis terminal cells. f. Stipe cortical hyphae. Bar: a 5 10 mm, b–f 5 10 mm.  

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Five new species of white-spored agarics are described from native montane wet forests in the Hawaiian Islands as follows: Callistosporium vinosobrunneum, Marasmiellus hapuuarum, Marasmius koae, Mycena marasmielloides, Pleurocybella ohiae. Comprehensive descriptions, illustrations and comparisons with phenetically similar species are provided. An i...

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Context 1
... (FIG. 4a) 1-5 mm diam, convex to campan- ulate, rugulo-striate to sulcate, dull, moist, felted to suede-like, disc and striae light brown (6D-E6) or sometimes grayish rose (12C3), grayish orange (5B4) to pale orangish white (5A2) elsewhere, fading overall in age. Lamellae adnate to shallowly adnexed, sometimes pseudocollariate, distant (6-9) ...
Context 2
... (FIG. 4b) (8.5-)9-10.2(-10.5) 3 (7.5-)8-9(-10) mm [x mr 5 9.3-9.5 3 8.3-8.7 mm, x mm 5 9.4 6 0.17 3 8.5 6 0.25 mm, Q 5 1.0-1.3, Q mr 5 1.11-1.13, Q mm 5 1.12 6 0.01, n 5 20-21, s 5 2], globose to subglobose, smooth, hyaline, strongly amyloid, thin-walled. Basidia (FIG. 4c) 28-35(-38) 3 14-16 mm, broadly clavate, hyaline, four-spored, clamped. ...
Context 3
... (FIG. 4b) (8.5-)9-10.2(-10.5) 3 (7.5-)8-9(-10) mm [x mr 5 9.3-9.5 3 8.3-8.7 mm, x mm 5 9.4 6 0.17 3 8.5 6 0.25 mm, Q 5 1.0-1.3, Q mr 5 1.11-1.13, Q mm 5 1.12 6 0.01, n 5 20-21, s 5 2], globose to subglobose, smooth, hyaline, strongly amyloid, thin-walled. Basidia (FIG. 4c) 28-35(-38) 3 14-16 mm, broadly clavate, hyaline, four-spored, clamped. Basidioles (FIG. 4c) broadly clavate. Pleur- ocystidia absent. Lamellar edge sterile, non-gelati- nous. Cheilocystidia (FIG. 4d) apically diverticulate; main body 16-32 3 (2.5-)5-8(-9) mm, irregularly cylindrical to clavate or sometimes filamentous, often lobed, ...
Context 4
... (8.5-)9-10.2(-10.5) 3 (7.5-)8-9(-10) mm [x mr 5 9.3-9.5 3 8.3-8.7 mm, x mm 5 9.4 6 0.17 3 8.5 6 0.25 mm, Q 5 1.0-1.3, Q mr 5 1.11-1.13, Q mm 5 1.12 6 0.01, n 5 20-21, s 5 2], globose to subglobose, smooth, hyaline, strongly amyloid, thin-walled. Basidia (FIG. 4c) 28-35(-38) 3 14-16 mm, broadly clavate, hyaline, four-spored, clamped. Basidioles (FIG. 4c) broadly clavate. Pleur- ocystidia absent. Lamellar edge sterile, non-gelati- nous. Cheilocystidia (FIG. 4d) apically diverticulate; main body 16-32 3 (2.5-)5-8(-9) mm, irregularly cylindrical to clavate or sometimes filamentous, often lobed, hyaline, inamyloid, thin-walled; diverticula 1.5- 7 3 0.5-1.5 mm, cylindrical to knob-like or ...
Context 5
... Q 5 1.0-1.3, Q mr 5 1.11-1.13, Q mm 5 1.12 6 0.01, n 5 20-21, s 5 2], globose to subglobose, smooth, hyaline, strongly amyloid, thin-walled. Basidia (FIG. 4c) 28-35(-38) 3 14-16 mm, broadly clavate, hyaline, four-spored, clamped. Basidioles (FIG. 4c) broadly clavate. Pleur- ocystidia absent. Lamellar edge sterile, non-gelati- nous. Cheilocystidia (FIG. 4d) apically diverticulate; main body 16-32 3 (2.5-)5-8(-9) mm, irregularly cylindrical to clavate or sometimes filamentous, often lobed, hyaline, inamyloid, thin-walled; diverticula 1.5- 7 3 0.5-1.5 mm, cylindrical to knob-like or irregular, sometimes nodulose, hyaline. Pileipellis a cutis of densely diverticulate hyphae (FIG. 4e) 1.5-3.5 ...
Context 6
... Cheilocystidia (FIG. 4d) apically diverticulate; main body 16-32 3 (2.5-)5-8(-9) mm, irregularly cylindrical to clavate or sometimes filamentous, often lobed, hyaline, inamyloid, thin-walled; diverticula 1.5- 7 3 0.5-1.5 mm, cylindrical to knob-like or irregular, sometimes nodulose, hyaline. Pileipellis a cutis of densely diverticulate hyphae (FIG. 4e) 1.5-3.5 mm diam, irregularly cylindrical, hyaline, inamyloid, non- gelatinous, non-incrusted; diverticula 1.5-7 3 0.5- 1.5 mm, cylindrical to knob-like, sometimes nodulose, hyaline. Hypodermium of hyphae inflated to 16 mm diam, hyaline, dextrinoid, non-gelatinous. Pileus trama interwoven; lamellar trama regular; hyphae 2- 5.5 mm diam, ...
Context 7
... diverticula 1.5-7 3 0.5- 1.5 mm, cylindrical to knob-like, sometimes nodulose, hyaline. Hypodermium of hyphae inflated to 16 mm diam, hyaline, dextrinoid, non-gelatinous. Pileus trama interwoven; lamellar trama regular; hyphae 2- 5.5 mm diam, cylindrical, non-inflated, hyaline, dextrinoid, thin-walled, non-gelatinous. Stipe cortical hyphae (FIG. 4f) parallel, densely diverticulate, 3-5 mm diam, cylindrical, hyaline, inamyloid, thin-walled, non-gelatinous; diverticula 0.5-2(-5) 3 0.5-1 mm, cylindrical, obtuse; stipe medullary hyphae 3-10 mm diam, cylindrical, hyaline, dextrinoid. Caulocystidia absent. Clamp connections present in all ...

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