Corybas grumulus Post published:July 31, 2021 Post category:Uncategorized Corybas grumulus is a species of helmet orchid from eastern Victoria that grows on tree ferns. This could be an adaptation to avoid the scavenging of lyrebirds, which constantly scratch up the loose rainforest floors. You Might Also Like Grose Valley September 2019 July 25, 2020 Prasophyllum striatum. Blue Mountains. March 30, 2021 A study of Caladenia parva October 9, 2021