Cantharellus anzutake W. Ogawa, N. Endo, M. Fukada & A. Yamada, Mycoscience 59(2): 158 (2018)

Buyck, Bart, Hofstetter, Valerie, Ryoo, Rhim, Ka, Kang-Hyeon & Antonin, Vladimir, 2020, New Cantharellus species from South Korea, MycoKeys 76, pp. 31-47 : 31

Cantharellus anzutake W. Ogawa, N. Endo, M. Fukada & A. Yamada, Mycoscience 59(2): 158 (2018) Figs 7 , 8 , 9

Description.

Pileus 10-40 mm broad, convex-conical when young, soon plane to broadly funnel-shaped, sometimes with a low obtuse umbo at centre, margin involute then inflexed to straight and undulate, pruinose when young then ± glabrous, greasy when moist, smooth or slightly uneven, not translucently striate, yellow (4A7-8), sometimes with darker ( “dirty”) centre. Lamellae moderately close, L = c. 25-30, decurrent, often furcate, rarely branched, whitish to pale cream from ± half radius toward the stipe attachment, then yellow towards pileus margin. Stipe 20-40 × 3.5-6 mm, cylindrical, not broadened towards base, finely pruinose when young, then glabrous, white, not hollowing. Context yellow beneath pileipellis, white otherwise. Smell slight, cantharelloid. Taste mild with slightly sharp aftertaste. Spore print not obtained.

Basidiospores ellipsoid to ovoid, (6.9-)7.2- 7.56 -8.0(-8.3) × (4.6-)4.8- 5.10 -5.4(-5.6) µm, Q = (1.31-)1.39- 1.49 -1.58(-1.68), smooth, with a small apiculus. Basidia clavate-pedicellate, (60-)70-80 × 7-8 µm, long and slender, mostly 6(-5)-spored with stout sterigmata. Subhymenium filamentous, composed of long and slender, cylindrical cells of similar diam. as the basidium base. Cystidia none. Pileipellis a loose tissue of intricately intertwining, sparsely septate, long and slender hyphal ends, near the pileus margin often aggregated in long tufts; hyphal ends composed of long, cylindrical, 5-8(-12) µm diam. cells, with refringent, thin- to slightly thickened walls, but in the pileus centre more frequently thick-walled; the terminal cell slender, toward the pileus margin (40-)60-130 µm long, obtuse rounded at the tip, cylindrical, hardly differentiated from subapical ones; in the pileus centre often somewhat irregularly constricted near the tip, but never very strongly so, and usually shorter, 30-100 µm, and on average somewhat narrower.

Habitat.

On soil under Pinus densiflora , Carpinus laxiflora and Quercus mongolica .

Specimens examined.

Jinan, Jeongcheon-myeon, Unjangsan Recreational Forest, 35°54'05.55"N, 127°24'53.89"E, alt. 400 m, 31 Aug 2016, V. Antonín, K.-H. Ka & S.-H. Kim, 1708 / VA 16.140 (BRNM 825751, PC 0142465). Ibid., VA 16.142 (BRNM 825752, PC 0142466).

Remarks.

This species is a typical member of Cantharellus subg. Cantharellus , and belongs to a group that is often referred to as the 'golden chanterelles’ or the C. cibarius Fr. complex, representing the commercially most important chanterelles on the international market. This species complex is reputedly very difficult to identify, in particular because of the very variable field aspect of the various species involved ( Olariaga et al. 2015, 2016). Hence, positive identification frequently requires molecular sequence data. Our identification is here based on the high quality ITS sequence we obtained for VA 16.142 and which is identical to the one deposited for the C. anzutake holotype (GenBank LC085359, similarity 100% for 100% coverage); both these ITS differ from other yellow species of chanterelles described from Asia by a ca 100 bp deletion in the ITS1 region ( Ogawa et al. 2018).

Because of the whitish hymenophore when young and the sometimes deep orange-yellow to cinnamon buff pileus surface, this species may be somewhat reminiscent of C. albovenosus . The latter species, however, has always a much brighter orange pileus and a more veined hymenophore that remains white, even with age, and it belongs in subgenus Cantharellus Cinnabarini (see Antonín et al. 2017). It is interesting to note that both Japanese and Korean specimens were collected near Pinus densiflora among possible host trees.

Figures

Figure 7. Cantharellus anzutake, microscopic features. Hyphal extremities at the pileus surface, on the left near the pileus center, on the right closer to the pileus margin. Scale bar: 10 μm. Drawings B. Buyck.

Figure 8. Cantharellus anzutake. Microscopic features. Basidia, basidiola and spores. Scale bar: 10 μm, but only 5 μm for spores. Drawings B. Buyck.

Figure 9. Cantharellus anzutake a, b Ka & Ryoo 3 _ Korea _ 1 - 2 [22 / 08 / 2012, Pyeongchang, Jungwangsan, 37 ° 27 ' 27.48 " N, 128 ° 29 ' 04.35 " E, 771 m asl, under Pinus koraiensis Siebold & Zucc.] c Antonin 16.140 (PC 0142465). Note the very pale hymenophore in young specimens, remaining for a long time paler closer to the stipe when maturing. Scale bar: 20 mm.