Trigonostemon viridissimus (Kurz) Airy Shaw var. viridissimus: Airy Shaw (1975: 205)

Ecology: growing on reddish clay soil; elevation: 0–450 m (Yu & van Welzen 2018).

Distribution: Malay Peninsula, Sumatra, Java, Borneo, Philippines, Lesser Sunda Islands (Yu & van Welzen 2018).

Specimens examined: Indonesia (Timor Barat): Kupang, [Baumata, 10°11’54” S, 123°41’19” E], 19 September 1964, Kooy, C. W. 192 (L [L.2258600]) ; Timor Leste: Lautém, c. 7 km west of Lore, [8°40’58” S, 126°57’16” E], 26 February 2006, Cowie, I.D. & Santana F. 10971 (L [L.2258599]) ; [Lore, 8°38’35” S, 127°01’12” E], 20 December 1953, van Steenis, C. G. G. J. 18211 (L [L.2258598]) .

Red List Assessment: Least Concern.