Polyporales » Polyporales genera incertae sedis

Climacocystis

Climacocystis Kotl. & Pouzar 1958, in Liu et al., Frontiers in Microbiology, 14, 1115761 (2023).

Diagnosis: Basidiomata annual, pileate, sessile to laterally substipitate, usually imbricate, soft and watery when fresh, corky to hard corky and light in weight when dry. Pileus applanate, fan-shaped to dimidiate. Pileal surface white to cream, tomentose to hirsute when fresh, becoming cream, yellowish-brown to orange-brown, glabrous or tufted with short stiff hairs when dry, often radially furrowed, azonate; margin acute. Pore surface white to cream when fresh, becoming cream, clay-buff to orange-brown when dry; pores angular or irregular; dissepiments thin, entire to lacerate. Context white to clay-buff, corky to hard corky. Tubes white, clay-buff to orange-brown, corky to hard corky. Hyphal system monomitic; generative hyphae with clamp connections, IKI–, CB–; tissues unchanged in KOH. Cystidia present, ventricose, colorless, thin- to thick-walled, smooth or apically encrusted. Basidia clavate, colorless, thin-walled. Basidiospores ellipsoid to subcylindrical, colorless, thin-walled, smooth, IKI–, CB–. Causing a white rot.

Index Fungorum Number: IF17325

Type species: Climacocystis borealis (Fr.) Kotl. & Pouzar 1958

Species:

Climacocystis borealis (Fr.) Kotl. & Pouzar 1958

Climacocystis borealis var. borealis (Fr.) Kotl. & Pouzar 1958

Climacocystis borealis var. rohrbacheri Kotl. & Pouzar 1958

Climacocystis borealis var. spathulata (Weinm. ex Fr.) Kotl. & Pouzar 1958

Climacocystis montana B.K. Cui & J. Song 2014

Climacocystis temperata S. Hussain, M. Nisar & Y.W. Lim 2024

 

Figure 1. Maximum likelihood tree illustrating the phylogeny of the Polyporales based on the combined sequence dataset of ITS + nLSU + RPB1. Branches are labeled with parsimony bootstrap proportions higher than 50%, maximum likelihood bootstrap higher than 50% and Bayesian posterior probabilities more than 0.90, respectively.

 

Figure 2. Maximum likelihood tree illustrating the phylogeny of the Polyporales based on the combined sequence dataset of ITS + nLSU + RPB1 + RPB2 + TEF1. Branches are labeled with parsimony bootstrap proportions higher than 50%, maximum likelihood bootstrap higher than 50%, and Bayesian posterior probabilities more than 0.90, respectively.

 

Figure 3. Basidiomata of Climacocystis and Diplomitoporus species: C. borealis (A,B: Dai 13028); C. montana (C,D: Cui 17502); D. crustulinus (E: Cui 17394; F: Cui 17475); D. flavescens (G: Dai 22798; H: Dai 23640). Scale bars: A = 2 cm; B,C,D = 3 cm; E,F,G,H = 1.5 cm.

 

Reference:

Liu, S., Zhou, J. L., Song, J., Sun, Y. F., Dai, Y. C., & Cui, B. K. (2023). Climacocystaceae fam. nov. and Gloeoporellaceae fam. nov., two new families of Polyporales (Basidiomycota). Frontiers in Microbiology, 14, 1115761.

 

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