Platygramme australiensis Staiger & Matthes-Leicht

Kalb, Jutarat & Kalb, Klaus, 2017, New lichen species from Thailand, new combinations and new additions to the Thai lichen biota, Phytotaxa 332 (2), pp. 141-156 : 148

Platygramme australiensis Staiger & Matthes-Leicht in Staiger (2002: 355). ( Fig. 2E )

This species is similar to P. caesiopruinosa , but can be distinguished by smaller ascospores, striate lirella and a carbonization which almost reaches the base of the lateral exciple.

Distribution and habitat:—This rare species is known from Australia (Western Australia, Queensland) and is here reported for the first time from Thailand. It was found growing on bark of various trees in mangrove forests, dry Eucalyptus forests, edges of rainforests and mixed deciduous forests in open, well-lit situations from sea level up to 440 m.

Material from Thailand examined:— Ratchaburi province: Suan Phueng district ; tambon Suan Phueng, trail to Kaew Chan Waterfall (Nine-Level Waterfall), bamboo scrub with scattered deciduous trees along a creek (mixed deciduous forest), 200–250 m. 13°31’31’’ N, 99°14’24’’ E, 11 December 2015, J. Sutjaritturakan & K. Kalb 41279 (Hb. K. & J. Kalb)

Figures

FIGURE 2. A. Graphis indica (J.K. & K.K, KJK 41769; scale 1 mm); B. Leucodecton occultum (J.K. & K.K, KJK 41952; scale 0.25 mm); C. Phaeographopsis palaeotropica, ascomata with a distinct black mazaedium (J.K. & K.K, KJK 41398; scale 0.5 mm); D. Phaeographopsis palaeotropica, ascomata lacking a mazaedium (J.K. & K.K, KJK 41395; scale 0.4 mm); E. Platygramme australis (J.K. & K.K, KJK 41279; scale 0.5 mm); F. Platygramme commutabilis (Sutjaritturakan 4225, KJK 42227; scale 1 mm); G. Platygramme discurrens (Sutjaritturakan 4895, KJK 42217; scale 0.3 mm); H. Platygramme subcolubrosa (J.S. & K.K., KK 41534; scale 0.5 mm).