Caladenia leucochila is a geophytic herbaceous perennial which produces a single hirsute leaf from an underground tuber in late autumn and grows through winter and spring. The leaf dehisces at the end of spring and the plant spends summer and early autumn as a dormant tuber. The species is not believed to be clonal. In spring it produces a single flower stem to 40 cm high with 1-2 cream, pale yellow or more rarely greenish-yellow, maroon marked flowers 5-10 cm across. Flowers are bilaterally symmetrical. The sepals and petals are prominently displayed with pointed or, more rarely, shortly thickened tips to the lateral petals and prominently thickened tips to the sepals. The degree of thickening is variable. The broad labellum has four to six rows of lamina calli and marginal fringing hairs. The labellum lacks the red apical apex found in the majority of species in the Caladenia huegelii complex. There is no obvious floral odour.
Collie Spider Orchid |
Caladenia leucochila
Status: Endangered on the EPBC Act list
Government evidence of impact of climate change:
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Australian Government, Conservation Advice, Caladenia leucochila
The species meets criteria A3cd for Endangered based on a revised projected reduction of mature individuals (plants are threatened by proposed mining expansion; a further decline in habitat quality (much of its habitat is highly disturbed from prior timber extraction; soil ripping; prescribed fire and mining); future timber harvesting; changed hydrology and fire.
Muja Conservation Conservation 2008 3 Unknown Good Fire (past; present; future) Monitor hydrological processes; Park park maintain connectivity of pollinator 2009 14 Hydrological change (past; present; and orchid habitat; protect from future) 2012 102 grazing; liaise with regional Parks Grazing (present; future) and Wildlife staff to put protective Weeds (present; future) strategies in place including protection from prescribed fire. 2.
Muja State Forest State Forest 2008 6 Unknown Moderate Mining (future) Exclude from future mining; monitor hydrological processes; 2009 97 Hydrological change (past; present; maintain connectivity of pollinator future) 2012 374 and orchid habitat; protect from Small population size (present; grazing; liaise with Griffin Coal and future) regional Parks and Wildlife staff to Fire (past; present; future) put protective strategies in place including protection from Weeds (present; future) prescribed fire and timber Grazing (present; future) extraction Timber extraction (past; future) Appendix A 4.
S of Muja State Forest 2008 1 Unknown Moderate Mining (future) Monitor hydrological processes; No known extant plants (present) maintain connectivity of pollinator and orchid habitat; protect from Fire (past; present; future) grazing; liaise with regional Parks Hydrological change (past; present; and Wildlife staff to put protective future) strategies in place including protection from prescribed fire and Timber extraction (past; future) timber extraction 6.
S of Muja State Forest 2008 1 Unknown Healthy No known extant plants (present) Monitor hydrological processes; maintain connectivity of pollinator Fire (past; present; future) and orchid habitat; protect from Hydrological change (past; present; grazing; liaise with regional Parks future) and Wildlife staff to put protective Timber extraction (past; future) strategies in place including protection from prescribed fire and timber extraction 7.
S of Muja State Forest 2012 63 Unknown Healthy Hydrological change (past; present; Exclude from future mining; future) monitor hydrological processes; maintain connectivity of pollinator Small subpopulation size (present; and orchid habitat; protect from future) grazing; liaise with Griffin Coal and Fire (past; present; future) regional Parks and Wildlife staff to Weeds (present; future) put protective strategies in place including protection from Grazing (present; future) prescribed fire and timber Timber extraction (past; future) extraction Appendix A 8.
S of Muja State Forest 2013 25 Unknown Moderate Mining (future) Monitor hydrological processes; maintain connectivity of pollinator 2015 98 Fire (past; present; future) and orchid habitat; protect from Hydrological change (past; present; grazing; liaise with regional Parks future) and Wildlife staff to put protective Timber extraction (past; future) strategies in place including protection from prescribed fire and timber extraction 9.
S of Muja State Forest 2013 22 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction 10.
S of Muja State Forest 2015 78 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction 11.
S of Muja State Forest 2013 18 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction Appendix A 12.
S of Muja State Forest 2015 17 Unknown Moderate Mining (future) Exclude from future mining; monitor hydrological processes; Hydrological change (past; present; maintain connectivity of pollinator future) and orchid habitat; protect from Small subpopulation size (present; grazing; liaise with Griffin Coal and future) regional Parks and Wildlife staff to Fire (past; present; future) put protective strategies in place including protection from Weeds (present; future) prescribed fire and timber Grazing (present; future) extraction Timber extraction (past; future) 14.
S of Muja State Forest 2014 12 Unknown Moderate Mining (future) Monitor hydrological processes; maintain connectivity of pollinator Fire (past; present; future) and orchid habitat; protect from Hydrological change (past; present; grazing; liaise with regional Parks future) and Wildlife staff to put protective Timber extraction (past; future) strategies in place including protection from prescribed fire and timber extraction 15.
S of Muja State Forest 2014 9 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction Appendix A 16.
S of Muja State Forest 2012 5 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction 17.
S of Muja State Forest 2012 2 Unknown Moderate Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction 18.
S of Muja State Forest 2012 1 Unknown Fire (past; present; future) Monitor hydrological processes; maintain connectivity of pollinator Hydrological change (past; present; and orchid habitat; protect from future) grazing; liaise with regional Parks Timber extraction (past; future) and Wildlife staff to put protective strategies in place including protection from prescribed fire and timber extraction Form to nominate a Western Australian species for listing as threatened; change of category or delisting (Updated 2016).
The species meets criteria A3cd for Endangered based on a projected 63 reduction of mature individuals (plants are threatened directly by projected mining expansion; and a further decline in habitat quality (much of its habitat is highly disturbed from prior timber extraction; soil ripping; prescribed fire and mining); future timber harvesting; changed hydrology and fire.
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