Prasophyllum - Leek Orchids
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There are around 25 species of Leek Orchids in the south west of Western Australia. Most of these require a hot summer burn, after which they flower in profusion. There is great variety within the genus, with species ranging from the tiny Laughing Leek Orchid (P. gracile) to the King Leek Orchid (P. regium), which can reach over 1.5 metres in heigh with over 80 flowers.

Prasophyllum fimbria
Fringed Leek Orchid

Prasophyllum fimbria
Fringed Leek Orchid

Prasophyllum fimbria
Fringed Leek Orchid

Prasophyllum fimbria
Dark variety

Prasophyllum fimbria
Fringed Leek Orchid

Prasophyllum fimbria
Fringed Leek Orchid

The Fringed Leek Orchid is quite variable in terms of stem colour (green to black), flower spacing and plant height. It will flower in unburnt bushland, but flowers in much greater prifusion after a burn. It flowers from August to October.

Prasophyllum parvifolium
Autumn leek Orchid

Prasophyllum parvifolium
Autumn leek Orchid

Prasophyllum parvifolium
Autumn leek Orchid

Prasophyllum parvifolium
Autumn leek Orchid

One of the first Leek Orchids to flower, starting in July, the Autumn Leek Orchid does not require a burn and reaches up to 25cm tall.

Prasophyllum giganteum
Bronze Leek orchid

Prasophyllum giganteum
Bronze Leek orchid

Prasophyllum giganteum
Bronze Leek orchid


Prasophyllum elatum
Tall Leek Orchid

Prasophyllum aff elatum
Crowded Leek Orchid

The Tall Leek Orchid (P. giganteum) and the Bronze Leek Orchid (P. elatum) are very similar, distinguished mainly by the labellum. In P. giganteum, the inner part of the labellum is flattened and pointed, in P. elatum, it is more cupped and rounded on its top edge.

Prasophyllum regium
King Leek Orchid

Prasophyllum regium
King Leek Orchid

Prasophyllum regium
King Leek Orchid

A very tall leek orchid, the King Leek Orchid can reach over 1.5 metres tall. It flowers late in the season, from November to December.

Prasophyllum drummondii
Swamp Leek Orchid

Prasophyllum drummondii
Swamp Leek Orchid

Prasophyllum drummondii
Swamp Leek Orchid

The Swamp Leek Orchid does not require a burn and prefers winter wet areas. It grows up to 70cm tall and flowers from October to November.

Prasophyllum gracile
Little Laughing Leek orchid

Prasophyllum gracile
Little Laughing Leek orchid

Prasophyllum gracile
Little Laughing Leek orchid

Prasophyllum macrostachyum
Laughing Leek Orchid

The smallest Leek Orchids, the Little Laughing Leek Orchid does not require a burn and is widely distributed over south west Western Australia. In drier areas it is is confined to areas receiveing extra water such as granite outcrops. P. macrostachyum is similar with slightly larger and darker flowers.

Prasophyllum hians
Yawning Leek Orchid

Prasophyllum hians
Yawning Leek Orchid

Prasophyllum hians
Yawning Leek Orchid

 

This dainty species flowers only after a hot summer burn and grows to 50cm tall.

Prasophyllum plumiforme
Dainty Leek Orchid

Prasophyllum plumiforme
Dainty Leek Orchid

Prasophyllum plumiforme
Dainty Leek Orchid

Prasophyllum cyphochilum
Pouched Leek Orchid

Three closely related species are P. cyphochilum, P. plumiforme and P. ovale (not picture here). They are distinguished by distribution and flower colour and size. P. plumiforme has smaller flowers and is found in sandy soil mainly on the coastal plain, while P. cyphochilum has larger (8mm) flowers and is found in winter wet areas in white gum areas.

Prasophyllum cucullatum
Hooded Leek Orchid

Prasophyllum cucullatum
Hooded Leek Orchid

Prasophyllum cucullatum
Hooded Leek Orchid

Found only along the south coast from Albany to east of Esperance, this orchid requires a burn and grows up to 20cm tall. Flowering occurs from August to October.

Prasophyllum brownii
Christmas Leek Orchid

Prasophyllum brownii
Christmas Leek Orchid

Prasophyllum brownii
Christmas Leek Orchid

Distinguished by its striped petals and pale green colouring, the Christmas Leek Orchid flowers from November to December and can reach just over a metre in height. It only flowers after a burn.

Prasophyllum sargentii
Frilled Leek Orchid

Prasophyllum sargentii
Frilled Leek Orchid

Prasophyllum sargentii
Frilled Leek Orchid

The Frilled Leek Orchid will sometimes flower in unburnt bushland and reaches up tp 60cm in height. Flowering occurs from August to October.

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