The Straits Times Growing number of hikers at Clementi Forest puts two species at risk NParks' National Biodiversity Centre deputy director Lua Hock Keong looking for the two orchid species during the rescue mission. ST PHOTO: MARK CHEONG The rare hidden zeuxine and common snout orchid collected in a container by NParks staff at Clementi Forest last Wednesday.ST PHOTO: MARK CHEONG Mr Lua at the Singapore Botanic Gardens' Seed Bank with tanks of the two rare orchids from Clementi Forest. They are being nurtured to ensure their survival.ST PHOTO: MARK CHEONG https://str.sg/JtU7 They can read the article in full after signing up for a free account.