Collybiopsis albicantipes J.S. Kim & Y.W. Lim, 2022
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https://dx.doi.org/10.3897/mycokeys.88.79266 |
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persistent identifier |
https://treatment.plazi.org/id/BCD572AB-4B7B-5B8F-BBC1-F1FFF355ADAD |
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scientific name |
Collybiopsis albicantipes J.S. Kim & Y.W. Lim |
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sp. nov. |
Collybiopsis albicantipes J.S. Kim & Y.W. Lim sp. nov.
Fig. 3A-B View Figure 3
Etymology.
Epithet " Collybiopsis albicantipes " refers to having a whitish base of the stipe.
Holotype.
The Republic of Korea, Jeollanam-do: Yeosu-si, Dolsan-eup, Hyangiram, 34°35'27"N, 127°47'55"E, alt. 183 m, 25 July 2017, Jae Young Park, Komsit Wisitrassameewong, SFC20170725-35 (GenBank accession no. ITS: OL467272; nrLSU: OL462811).
Diagnosis.
This species notably has hemispherical to convex, 4-23 mm pileus, distant lamellae, central to eccentric, tomentose, 5-15 × 0.5-1.5 mm stipe with a white base; ellipsoid to ovoid, 5.8-7.4 × 2.8-4 μm basidiospores, clavate (often constricted), 25.5-34.8 × 4.8-6.7 μm basidia, broadly clavate, irregular, sometimes lobed, 26-49 × 5.4-10.6 μm cheilocystidia, and a habit of fruiting on branches.
Description.
Pileus: 4-23 mm, eccentric, convex to hemispherical when young, becoming depressed and undulating with age; Surface smooth, brownish orange (5C3 to 6D4) at the center, becoming paler to the margin (4A3 to 3A2). Lamellae: distant, L = 10-16, l = 3-7, adnate, whitish to yellowish white (3A2). Stipe: 5-15 × 0.5-1.5 mm, central to eccentric, cylindrical, tomentose, apex brownish orange (5C3) to light brown (6D4), gradually becoming paler downwards (5B2 to 6C2), with whitish basal tomentum. Basidiospores: 5.8-7.4 × 2.8-4 μm (average 5.5 × 3.2 μm), Q = 1.6-2.1 (mean = 1.97), ellipsoid to ovoid, amygdaliform, smooth, hyaline, non-dextrinoid, with drops. Basidia: (23) 25.5-34.8 × 4.8-6.7 (7) μm, 4-spored, clavate, often constricted. Cheilocystidia: 26-49 × 5.4-10.6 (14) μm, broadly clavate, irregular, sometimes lobed. Pleurocystidia: 25.8-56.4 (62) × 6.2-12.5 μm, clavate, subulate, sometimes lobed. Trama hyphae: cylindrical, often sub-inflated, smooth, non-dextrinoid 1.7-9 (12) μm wide. Pileipellis: a cutis made up of cylindrical, often sub-inflated, with weak annular ornamentation, 2.0-7.5 μm wide hyphae; terminal elements adpressed, cylindrical, clavate, sometimes constricted or curved, 2.0-5 μm wide. Stipitipellis: a cutis of cylindrical, smooth, 2.7-9.7 (11) μm wide hyphae. Caulocystidia: 21.7-90 × 3.9-11.7 μm, cylindrical, flexuose, sometimes curved. Clamp connections: present in all tissues.
Other specimens examined.
The Republic of Korea, Jeollanam-do: Jindo-gun, Maenggoldo island , 34°12'21"N, 125°51'41"E, alt. 24 m, 4 July 2018, Jae Young Park, SFC20180704-86 GoogleMaps .
Habit and habitat.
Scattered to gregarious on the branch in mixed forest dominated by Camellia japonica Linne, in summer.
Distribution.
The Republic of Korea.
Remark.
Collybiopsis albicantipes is similar to Co. ramulicola and Co. koreana when comparing macro-morphological characteristics. Collybiopsis ramulicola is distinguishable from Co. albicantipes by a reddish pileus, fewer and buff lamellulae (1-4), a shorter and thinner stipe (12-23 × 2-3 mm), shorter and slightly elongated basidiospores (6.6-8.4 × 3.5-4.5 μm), shorter basidia (23-27 × 3.8-5.5 μm), and shorter cheilocystidia (23-27 × 3-6 μm) ( Deng et al. 2016). Collybiopsis koreana differs from Co. albicantipes by having a larger pileus (27-60 mm), more lamellae (15-20) and lamellulae (2-3), longer and thicker stipe (14-70 × 2-3.5 μm), bigger and elongated basidiospores (7.5-10 × 4-5 μm), cheilocystidia with different shapes and sizes (25-55 × 4-10 μm), and incrustation dark brown in KOH ( Antonín et al. 2010).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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