Agaricales » Lyophyllaceae  » Termitomyces

Termitomyces heimii

Termitomyces heimii Natarajan

Index fungorum number: 324479

Pileus 0.8-3.5 cm diam., parabolic to campanulate then plane to uplifted when mature, with rounded perforatorium; surface white to cream and dark at the center when mature, velar squamulose on surface, margin at first incurved then straight, often splitting. Lamellae free, white to creamy, 1 mm wide, crowded with lamellulae. Stipe 1.3-4 cm long, 0.5-2 cm wide, central, cylindrical to subcylindrical, surface white to cream, smooth and glabrous, solid. Annulus membranous at first, forming the persistent double annulus on the upper of stipe, surface white to cream. Pseudorhiza 7-20 cm long, 0.5-1.5 cm thick, cylindrical, surface white to cream, smooth, leathery, hollow. Spore deposit not found. Basidiospores 6-9.5 x 4-6 μm, ovoid to ellipsoid; smooth and thin-walled, inamyloid. Basidia 18-19 x 5-8 μm, clavate to subcylindric, bearing four sterigmata, inamyloid. Hymenophoral trama regular, up to 100 μm wide, inamyloid. Cheilocystidia crowded, 21-35 x 14-20 μm, clavate to pyriform, smooth and thin-walled, inamyloid. Pleurocystidia rare, 20-34 x 11-18 μm, similar to cheilocystidia Pileipellis a repent epicutis of narrow, radial hyphae, 2.0-4.5 μm diam.

 

Specimen examined: Kanchanaburi: Thong Pha Phum, teak plantation (TERM055).

Fig 1. Phylogenetic tree based on ITS1-5.8S-ITS2 of Termitomyces sequences in this study and from GenBank (blue letter) using the Maximum parsimony method. Agaricus abruptibulbus 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 Diversity21(6).

 

 

 

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Supported by 
National Research Council of Thailand (NRCT) 

Project entitled:
“Total fungal diversity in a given forest area with implications towards species numbers, chemical diversity and biotechnology” (Grant no. N42A650547).

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