Seeds of South Australia
Hypericum perforatum (Guttiferae)
St John's Wort
List of species for Hypericum
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Seed collecting:
January to April
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Hypericum]
Name derivation:
Hypericum from the Greek 'hyper' meaning above and 'eikon' meaning image; referring to plants from the genus being hung above religious figures to ward off evil spirits during St John’s day, hence the common name. Perforatum from Latin meaning perforation; referring to the leaves with lots of translucent oil glands appearing like little perforations. 
Distribution:
It is native to Europe, West Asia, North Africa, Madeira and the Azores and is recorded on the southern Eyre Peninsula, southern Flinders Ranges, Mount Lofty Ranges and the South-east in South Australia, growing in dryish areas. Also recorded from all states except for the Northern Territory.
Status:
Introduced. Common in South Australia. Common in the other states.
Plant description:
Erect perennial herb to 90 cm high with several erect stems arising from woody, short-rhizomatous root-stock. Leaves ovate to oblong or linear, to 25 mm long and 5 mm wide, margins usually recurved, sometimes with superficial black dots and conspicuous translucent glands. Inflorescence numerous at terminal of stems with pale to deep golden-yellow, black-dotted on the margin flowers. Flowering between November and February.
Fruit type:
Brown narrowly ovoid capsule, with many raised oblique linear glands.
Seed type:
Brown oblong seed to 1.1 mm long and 0.5 mm wide, surface reticulated surface texture.
Seed collecting:
Collect maturing capsule those turning pale brown with brown seeds inside.
Seed cleaning:
Place the capsules in a tray and leave to dry for a week. Then rub the dried capsules gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Be careful as the seeds are very small. 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.