Agaricales » Lyophyllaceae  » Termitomyces

Termitomyces microcarpus

Termitomyces microcarpus (Berk. & Broome)

Index fungorum number: 291355

 

Pileus 1.0-1.5 cm diam., conic then plane to uplifted when mature, with small obtuse perforatorium; surface white to cream and dark or yellowish-brown at the center when mature, smooth and glabrous, margin straight, often radially splitting when mature. Lamellae free, white to creamy, 1 mm wide, crowded with lamellulae. Stipe 4-6 cm long, 0.2-0.5 cm wide, central, cylindrical, surface white to cream, smooth and glabrous. Annulus absent. Pseudorhiza forming a root-like at stipe base under ground level. Spore deposit white. Basidiospores 4.5-8 x 3-5 μm, ovoid to ellipsoid; smooth and thin-walled, inamyloid. Basidia 15-30 x 5-10 μm, clavate to subcylindric, bearing four sterigmata, inamyloid. Hymenophoral trama regular, 50-60 μm wide, inamyloid. Cheilocystidia rare, 30-40 x 10-17.5 μm, clavate to pyriform, smooth and thin-walled, inamyloid. Pleurocystidia rare, 25-35 x 10-17.5 μm, similar to cheilocystidia. Pileipellis a repent epicutis of narrow, radial hyphae, 2.0-4.0 μm diam. (Figure 4.D-F)

Specimens examined: Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat environmental research station, in dry evergreen forest (TERM001, TERM002), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in dry dipterocarp forest (TERM003, TERM007, TERM014), Trang: Kachong, oil palm plantation (TERM047, TERM057, TERM058, TERM059, TERM060, TERM061).

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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