<i>Astraeus sirindhorniae</i>.

<p>Exoperidium layers (A–B). (A) exoperidial subpellis, bar = 5 µm. (B) exoperidial subpellis (innermost), bar = 10 µm. (C) rhizomorph hyphae with clamp connection (arrowhead), bar = 5 µm. (D) capillitium hyphae displaying continuous lumen (arrowhead) and basidiospore (arrow), bar = 5 µm. (E–F) spore ornamentation demonstrated coalescent spines in groups, bar = 1 µm. A–D magnification at 1,000×.</p

Maximum likelihood tree from ITS dataset identifies <i>Astraeus sirindhorniae</i> as a distinct species of <i>Astraeus</i>.

<p>Numbers above branches identify the statistics bootstrap percentages (bold text, before forward slash) and Bayesian posterior probabilities (normal text, after forward slash) for that branch. Maximum likelihood bootstraps from 1000 iterations. Bayesian posterior probabilities from 1000 iterations (1 million runs sampling every 1000^th iteration).</p

Maximum likelihood tree from a multigene dataset reveals the placement of <i>Astraeus sirindhorniae</i> within the Sclerodermatineae.

<p>Thick vertical black bars identify root branch for the taxonomic lineage indicated by the adjacent label. Numbers above branches identify the statistics bootstrap percentages (bold text, before forward slash) and Bayesian posterior probabilities (normal text, after forward slash) for that branch. Maximum likelihood bootstraps from 1000 iterations. Bayesian posterior probabilities from 1000 iterations (1 million runs sampling every 1000^th iteration).</p

<i>Astraeus sirindhorniae</i>.

<p>(A) immature basidiomes, bar = 60 mm. (B) short stipitate endoperidium (arrowhead), bar = 3 mm. (C) fibrillose endoperidium (arrowhead), bar = 3 mm. (D) gleba colour become umber to date- brown when mature (arrowhead), bar = 10 mm. (E) complex outer peridium, bar = 3 mm.</p

List of specimens in this study.

<p>Notes:</p>a<p>New species described in Phosri et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0071160#pone.0071160-Phosri3" target="_blank">[32]</a>: <i>A. smithii</i> and ASTRAE-86 is the holotype.</p>b<p>New species described in Phosri et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0071160#pone.0071160-Phosri3" target="_blank">[32]</a>: <i>A. telleriae</i> and ASTRAE-87 is the holotype.</p><p>Specimen codes as indicated in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0071160#pone-0071160-g002" target="_blank">Figure 2</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0071160#pone-0071160-g003" target="_blank">3</a>. All specimens from Phu Khieo Wildlife Sanctuary abbreviated as PKWS.</p