Seeds of South Australia
Pterostylis lepida (Orchidaceae)
Halbury Rufous-hood
List of species for Pterostylis
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Seed collecting:
November to December
Herbarium regions:
Northern Lofty, Yorke Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke
IBRA region
St Vincent (EYB02)Eyre Yorke Block
 Critically Endangered   (IUCN: CR B1ab(iii,iv))   [Taxonomic Issues. One definite population, Halbury. Thousands of plants, population viable.]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Pterostylis]
Name derivation:
Pterostylis from the Greek ‘pteron’ meaning a wing and ‘stylis’ meaning a style or column; referring to the prominent wings found at the top of the column in all species. Lepida from the Latin ‘lepidus’ meaning elegant, neat or fine; alluding to tyhe small neat habit of the species.
Distribution:
Endemic to South Australia and restricted to the Adelaide Plains as far north as Snowtown, growing in loamy or clay soils in Callitris and Mallee-woodland, often over limestone.
Status:
Native. Very rare in South Australia.
Plant description:
Herb with 5-10 green ovate leaves forming a small basal rosette to 5 cm across, flat on the ground. Flower stem reaching to 30 cm, but usually about 10 cm, slender, becoming wiry with age. Flowers few to about ten, only one or two open at a time, greenish or greenish brown with paler striations; lateral sepals deflexed, basally broad, the apices filiform to 2 cm long, divergent and often upturned. The labellum is tiny, to 4 mm long, oblong, thick and channeled, margins with few long silky setae. Flowering between July and October.
Fruit type:
Brown papery ellipsoid capsule.
Seed type:
Very small brown ellipsoid seed with a long translucent brown mesh-like covering.
Seed collecting:
Collect fat capsules as they start to dry and turn brown. Pods will split and release the seeds quickly and will require monitoring. To increase the chances of collecting mature pods, it is recommended that a small breathable bag (ie. Organza bags) be used to enclose the developing capsules.
Seed cleaning:
Place the capsules in a container that will hold fine seeds and leave to dry for a few weeks or until the capsule split. Then carefully hold the capsule and tap it gently to release the seeds. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place or in liquid nitrogen.