Eutaxia microphylla

Eutaxia microphylla, also known as common eutaxia, is a shrub species in the family Fabaceae. The species is endemic to Australia.

Common eutaxia
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Fabales
Family:	Fabaceae
Genus:	Eutaxia
Species:	E. microphylla
Binomial name
Eutaxia microphylla (R.Br.) J.M.Black
Synonyms
Sclerothamnus microphyllus R.Br. Eutaxia leptophylla Turcz. Eutaxia microphylla J.M.Black

Description

Plants grow to between 30 and 40 centimetres high. The small, grey green, narrow to ovate leaves are 2.3 to 4 mm long and 0.6 to 0.9 mm wide. The single pea flowers have dark red keels, yellow-orange wings and a yellow-orange standard with red markings on the rear. These are produced between July and October in the species' native range.[1]

Taxonomic history

The species was formally described by botanist Robert Brown in 1811 in Hortus Kewensis. Brown gave it the name Sclerothamnus microphyllus. The specific epithet is derived from the Greek words micro, meaning small and phyllon meaning leaf, alluding to the plant's small leaves.[1] The species was transferred to the genus Eutaxia in 1894.[2] Another species described by Ferdinand von Mueller in 1858, Eutaxia diffusa, was reclassified as a subspecies of Eutaxia microphylla in 1957, however Mueller's original name was reinstated in 2010.[2]

Distribution

Eutaxia microphylla is recorded across southern South Australia and north-eastern Tasmania. In Victoria it predominantly occurs in the west of the state and in New South Wales it is recorded in mallee and Mugga Ironbark communities to the west of the Great Dividing Range.[1][3][4] Associated genera include Acacia, Eucalyptus and Eremopila.[1]

Ecology

Caterpillars of the Fringed Blue butterfly feed on this species.[3]

References

1. Wilkins, C.F.; J.A. Chappill; G.R. Henderson (2010). "An account of Eutaxia (Leguminosae: Mirbelieae) with a focus on the Western Australian species" (PDF). Nuytsia (20): 40–42. ISSN 0085-4417.
2. "Eutaxia microphylla". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 10 April 2012.
3. Wild Plants of Victoria (database). Viridans Biological Databases & Department of Sustainability and Environment. 2009.
4. Porteners, M.F. "Eutaxia microphylla (R.Br.) C.H.Wright & Dewar". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 10 April 2012.