Agaricales » Lyophyllaceae  » Termitomyces

Termitomyces striatus

Termitomyces striatus (Beeli) R. Heim

Index fungorum number: 291357

Pileus 2-8 cm diam., conic to convex then plane when mature, with small and pointed perforatorium; surface light brown to greyish brown and dark at the center when mature, usually radially fibrillose, shiny, margin at first incurved then straight, often splitting. Lamellae free, white to creamy, 3-5 mm wide, crowded with lamellulae. Stipe 4.5-11 cm long, 0.5-1.5 cm wide, central, cylindrical to subcylindrical, occasionally swelling on its upper part and tapering at the base to form pseudorhiza, surface whitish, longitudinally striate, solid. Annulus absent. Pseudorhiza 7-20 cm long, 0.5-1.5 cm thick, tapering at the base; surface white to pale grey, smooth. Spore deposit pinkish. Basidiospores 5-8.5 x 4-6 μm, ovoid to ellipsoid; smooth and thin-walled, inamyloid. Basidia 15-22 x 4-6 μm, clavate to subcylindric, bearing four sterigmata, inamyloid. Hymenophoral trama regular, 40-100 μm wide, inamyloid. Cheilocystidia crowded, 20-32 x 6-17 μm, clavate to pyriform, smooth and thin-walled, inamyloid. Pleurocystidia crowded, 17-32 x 6-16 μm, similar to cheilocystidia, sometime subcylindrical or digitate. Pileipellis a repent epicutis of narrow, radial hyphae, 2.0-5.0 μm diam.

Specimens examined: Nakhon Ratchasrima: Wang Nam Khiao, ThaplanNational park, in Hopea odorata plantation (TERM005, TERM006), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in dry evergreen forest (TERM009, TERM010, TERM048, TERM051, TERM052, TERM054), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in Bamboo plantation (TERM049, TERM050, TERM053), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in mix forest tree species plantation (TERM013, TERM018, TERM019, TERM020, TERM021, TERM022, TERM042), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in Eucalyptus plantation (TERM012, TERM015, TERM016, TERM017), Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat environmental research station, in dry evergreen forest (TERM034, TERM035, TERM036).

Fig 1. Phylogenetic tree based on 28S rDNA of Termitomyces sequences in this study and from GenBank (shown in blue letter) using the Maximum parsimony method. Agaricus erythrosarx is used as an outgroup. Numbers at the node are bootstrap scores of 1000 replicates.

Fig 2. Fresh basidiocarps and microscopic features of Termitomyces heimii (A-C); arrow pointing at cystidia (B, C), Termitomyces microcarpus (D-F); arrowhead pointing at cystidium (E); arrowhead pointing at basidium (F), Termitomyces striatus (G-K); basidiospore (H); arrowhead pointing at cystidia (I, J); arrowhead pointing basidium (K). Scale bar: fresh basidiocarps = 1 cm; microscopic features = 10 μm.

Reference

Janual N, Nipitwattanaphon M, Hasin S, Kaewgrajang T. 2020 – Morphological and molecular characterization of Termitomyces (Lyophyllaceae, Agaricales) in Thailand. Biodiversitas Journal of Biological Diversity, 21(6).

 

 

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