of elevations but is most flower as late as May at marsh greenhood strongly associated with some sites (Pterostylis uliginosa) 'winter-cold' sites (e.g. Some level of disturbance Snug Tiers) or areas is thought to be required receiving a moderately for persistence consistent rainfall (e.g. Wielangta, Railton) Pterostylis basaltica Endangered Victoria Grows among rocks on Peak flowering period: Similar species: not D.L.Jones & basalt outcrops, which are November to January specified M.A.Clem. (basalt scattered in grassland and Even at flowering time the greenhood) sparse woodland orchids can be difficult to sight Pterostylis bicornis Vulnerable Queensland Growing in humus Peak flowering period: Similar species: not D.L.Jones & pockets on bare rock June and July specified M.A.Clem. Pterostylis bryophila Critically SA South Australian blue gum Vegetative growth: March Similar species: coastal D.L.Jones endangered (Eucalyptus leucoxylon) to April greenhood (Pterostylis (Hindmarsh Valley and pink gum (E. alveata) and P. obtusa. Flower-bud formation: greenhood) open forest or (Note: does fasciculosa) P. obtusa April to May woodland; grassy not occur in SA) Peak flowering period: woodland in mossy gullies May to July along drainage lines; on steep slopes and ridges Flowering abundance is near creeks known to vary significantly from year to year depending on autumn rainfall
of elevations but is most strongly associated with 'winter-cold' sites (e.g. Snug Tiers) or areas receiving a moderately consistent rainfall (e.g. Wielangta, Railton) flower as late as May at some sites Some level of disturbance is thought to be required for persistence marsh greenhood (Pterostylis uliginosa) Pterostylis basaltica D.L.Jones & M.A.Clem. (basalt greenhood) Endangered Victoria Grows among rocks on basalt outcrops, which are scattered in grassland and sparse woodland Peak flowering period: November to January Even at flowering time the orchids can be difficult to sight Similar species: not specified Pterostylis bicornis D.L.Jones & M.A.Clem. Vulnerable Queensland Growing in humus pockets on bare rock Peak flowering period: June and July Similar species: not specified Pterostylis bryophila D.L.Jones (Hindmarsh Valley greenhood) Critically endangered SA South Australian blue gum (Eucalyptus leucoxylon) and pink gum (E. fasciculosa) open forest or woodland; grassy woodland in mossy gullies along drainage lines; on steep slopes and ridges near creeks Vegetative growth: March to April Flower-bud formation: April to May Peak flowering period: May to July Flowering abundance is known to vary significantly from year to year depending on autumn rainfall Similar species: coastal greenhood (Pterostylis alveata) and P. obtusa. (Note: P. obtusa does not occur in SA)
draft-guidelines-threatened-orchids.docx