Five specimens of a rarely encountered fungus were collected by N. S. from twigs of a bamboo (“Bong”; Bambusa nutans) in Nam-Nao National Park, Thailand, in August and September 2009–2011. The local name, “Siamese jelly- ball” or “kao-niew ling”, recalls the dark, golf ball-like and gelatinous ascostromata, and it is claimed to be edible. It has only been found on bamboo, and was not seen on any other plants in the area. It occurs at 390–840 m, where the average temperature is generally less than at lower and flatter localities.