Showing posts with label Fabaceae - Chorizema. Show all posts
Showing posts with label Fabaceae - Chorizema. Show all posts

05 February 2010

Chorizema obtusifolium – Flame Pea

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Chorizema obtusifolium – Flame Pea

A common shrub around Esperance, particularly to the northwest, north and east of the town, but when not in flower is rarely noticed. It grows to around 60 cm (2’) in height with only a few weak scraggly upright stems that generally rest against other vegetation, particularly when in flower as they try to support clusters of large terminal flowers.

The Chorizema (Flame Pea) genus is renowned for it large colourful flowers and this species is no exception, by being impossible to miss glowing amongst and outshining neighbouring flowering shrubs. Each flower is around 1.5 cm (5/8”) diameter and when combined with several others are very eye-catching, as they are meant to be in order to attract pollinators. The linear leaves (to 5 cm or 2” in length) are widely spaced and grouped in pairs or singularly along the stems, appearing very much like Gastrolobium/Oxylobium species and was previously known as Oxylobium obtusifolium. The leaves are green on top and pale below, with distinctively raised veins, the margins are recurved and the top is often abruptly turned down to produce a bilobed appearance.


Chorizema obtusifolium is a heathland species and grows in deep sandy soil or shallow sand over gravel, with a preference for well-drained but seasonally moist conditions, common to lower slopes and flats. The main flowering period is from August to October, but can bloom later depending on local weather conditions.

27 August 2009

Holly Flame Pea - Chorizema ilicifolium

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Holly Flame Pea - Chorizema ilicifolium

A small open holly-leaf shrub to around 30 cm (12") in height, with weak stems that rest against other vegetation, or hang into open spaces near the ground. In the Esperance region I have only encountered it on calcareous stabilised (well vegetated) tertiary dunes (where it can be very common), or over limestone. The bright orange and red flowers compete for their pollinators attention amidst other similarly brightly colored pea-flowers, such as Chorizema aciculare and Kennedia prostrata.

With such a common and widespread species in its coastal sand dune habitat, flowers can be found over several months from July to October, although August and September would their peak flowering period.

24 April 2009

Needle-leaved Chorizema - Chorizema aciculare subsp. aciculare

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Needle-leaved Chorizema - Chorizema aciculare subsp. aciculare

A very common small shrub to around 50 cm (1'6") or less in height, often leaning against other vegetation or trailing close to the ground. Like most shrubs from the genus Chorizema, the flowers are large and spectacular, but with this species the foliage is fine, curved and prickly and scarcely noticed unless in bloom.

The Needle-leaved Chorizema can be found in sandy heath, around granite outcrops and in a variety of soils, but the region it is most common is on stabilised calcareous tertiary dunes, particularly after fire. Flowering is from July to October and can be relied upon to provide a decent show.


Chorizema aciculare subsp. aciculare is the only subspecies in the Esperance district, the the other subspecies (laxum) occurs along the west coast.