Cladonia mongkolsukii

[1] Described as new to science in 2011, it is found in lower-elevation montane scrub forests of northeast Thailand and in Sri Lanka.

The type specimen was collected by the first author in Phu Hin Rong Kla National Park, Pitsanulok Province, Thailand, at an elevation of 1,110 m (3,640 ft).

They may be unbranched or slightly branched at the apex, and initially lack cup-like structures (ascyphose), but soon develop very narrow scyphi (1–3 mm in diameter) at the tips.

They are simple, hyaline, oblong to ellipsoid in shape, and typically have dimensions in the range 9–9.5–10 by 2.7–2.9–3.1 μm.

[2] Cladonia mongkolsukii is known to grow in lower-elevation montane scrub forests in northeast Thailand, specifically within Phu Hin Rong Kla National Park.