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Clavariadelphus sachalinensis (S. Imai) Corner, Ann. Bot. Mem. I: 282, 1950

Huang, Hong-Yan, Zhao, Jie, Zhang, Ping, Ge, Zai-Wei, Li, Xian & Tang, Li-Ping, 2020, The genus Clavariadelphus (Clavariadelphaceae, Gomphales) in China, MycoKeys 70, pp. 89-121 : 89

publication ID

 https://dx.doi.org/10.3897/mycokeys.70.54149

persistent identifier

https://treatment.plazi.org/id/5C466E1A-D6B7-58BD-84ED-B2E3BE78B16A

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MycoKeys by Pensoft

scientific name

 Clavariadelphus sachalinensis (S. Imai) Corner, Ann. Bot. Mem. I: 282, 1950
status

 

8. Clavariadelphus sachalinensis (S. Imai) Corner, Ann. Bot. Mem. I: 282, 1950 Figs 2j View Figure 2 , 3h View Figure 3 , 5f, g View Figure 5 , 13a, b View Figure 13

Note.

The following taxonomic description is drawn from Methven (1989), combined with our field notes, including macro-morphology, growth habit, distribution, host plants and observations.

Description.

Basidiomes up to 8 cm high, 0.3-0.6 cm diam. basally, slightly enlarged upwards 0.8-1.2 cm diam., simple, initially cylindrical to subcylindrical, then narrowly clavate to clavate; hymenium longitudinally rugose in age, tawny or light walnut-brown to light brown at maturity; apex subacute, obtuse to broadly rounded, surface smooth to slightly rugulose, concolorous with the hymenium; surface slowly staining, brown or dark brown where cut or bruised, staining more conspicuously; base terete, pubescent to tomentose, initially pale yellow to light yellow, then brownish-orange to light brown; mycelial hyphae greyish to pallid; flesh initially solid, becoming soft and spongy upwards, white to pallid, staining on exposure. Odour and taste not distinctive. Spore deposit yellowish-white to light buff.

Hymenium extending over the apex of basidiomata, composed of basidia and leptocystidia. Basidia 65-105 × 8-12.5 μm, clavate, hyaline, thin-walled, (2-) 4-spored, sterigmata 8-10 μm in length. Basidiospores 21-24 × 4-6 μm, Q = 3.5-5.0, Q m = 4.2, narrowly ellipsoid, boletoid or sway-backed in profile, with a small apiculus, inamyloid, thin-walled, hyaline in KOH, smooth. Leptocystidia 50-70 × 2.5-5 μm, scattered amongst and scarcely projecting beyond the basidia, cylindrical to narrowly clavate, thin-walled, smooth, hyaline, non-pigmented, clamped, inflated apically at maturity, at times with apical or subapical branches. Mycelial hyphae 2-8 μm diam., interwoven or aggregated into rhizomorphic strands, branched, clamped; hyphal walls smooth with light microscopy and SEM.

Chemical reactions.

(dried basidiomes): KOH = positive, light yellow; FeCl3 = positive, green-yellow; NH4OH = positive, orange; ethanol, phenol, FeSO4 and Melzer’s reagent = negative.

Known distribution and ecology.

N China (in this study) and SW China ( Methven 1990). Gregarious habit on fallen needles and other debris under conifers, especially pine at elevations ranging from 2000-3600 m.

Materials examined.

China. Inner Mongolia: Mo er dao ga National Forests, Great Khingan Mountains, 8 August 2013, P. Zhang 1316 (MHHNU 7816). Sichuan Province: Hongyuan Prefecture, Kangle Town, alt. 3600 m, 14 August 1998, M.S. Yuan 3361 (HKAS 33844).

Comments.

Clavariadelphus sachalinensis was proposed by Imai, based on Japanese collections as a species of Clavaria and then transferred to genus Clavariadelphus ( Imai 1930, Corner 1950). In China, C. sachalinensis was previously reported with distribution in SW China ( Methven 1990; Zang 1996) and is also found in northern regions of China. Clavariadelphus sachalinensis is similar to C. ligula and C. yunnanensis . Their differences are described in our discussion of C. ligula .

Specimens