''Conostylis angustifolia'' is a rhizomatous, tufted perennial plant species in the family

Haemodoraceae Haemodoraceae is a family of perennial herbaceous flowering plants with 14 genera and 102 known species. It is sometimes known as the "bloodwort family". Primarily a Southern Hemisphere family, they are found in South Africa, Australia and New ...

, endemic to the south-west of

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

. In September and October it produces yellow flowers in the species' native range.

Description

The leaves are flat, a dull brick red, and 12 to 40 cm long and 1 to 3.5 mm wide. The leaf base is sometimes densely matted with woolly hairs, but these often abrade to make the leaf smooth. The leaf margins have bristles/hairs which are 0 to 2 mm long, and there are some small side branches at the base. The scape is hairy and 15 to 40 cm long, usually longer than the leaves. The inflorescence consists of several flowers, and is subtended by a bract 22 to 24 mm long. The flowers are 10–19 mm long and sessile. The hairy, radially symmetric perianth is yellow, and has six roughly equal tepals. There are six stamens all at the same level. The filaments are 1 are 1.2 mm long, with anthers 4 to 4.5 mm long. The style is 8–10 mm long and it flowers in September. The perianth is 11 to 17 mm long and the tube is a golden yellow. The lobes are 5–9 mm long, and are pale yellow with the margins at the apex being white or sometimes maroon. The anthers are 2.3–5 mm long and have no appendages. There are at least two conflicts in the descriptions between the two sources used: the first in anther length; the second (a major conflict) in anther appendages: ''Florabase'', stating that the anthers have appendages, while in ''Flora of Australia online'' "anthers lacking appendage" is a feature which is diagnostic for the species: "The long narrow leaves, the long scapes with large flowers, and anthers lacking appendages are diagnostic of the species."

Distribution

It occurs in the IBRA bioregions of the

Geraldton Sandplains Geraldton (Wajarri: ''Jambinu'', Wilunyu: ''Jambinbirri'') is a coastal city in the Mid West region of the Australian state of Western Australia, north of the state capital, Perth. At June 2018, Geraldton had an urban population of 37,648. ...

and the

Swan Coastal Plain The Swan Coastal Plain in Western Australia is the geographic feature which contains the Swan River as it travels west to the Indian Ocean. The coastal plain continues well beyond the boundaries of the Swan River and its tributaries, as a geol ...

in the South-west Botanical Province.

Taxonomy

It was first described in 1987 by

Stephen Hopper Stephen Donald Hopper AC FLS FTSE (born 18 June 1951) is a Western Australian botanist. He graduated in Biology, specialising in conservation biology and vascular plants. Hopper has written eight books, and has over 200 publications to his n ...

as ''Conostylis angustifolia''. The specific epithet, ''angustifolium'', derives from the Latin, ''angustus'' ("narrow") and ''folium'' ("leaf") giving "narrow-leaved".

References

{{Taxonbar, from=Q15333263 angustifolia Taxa named by Stephen Hopper Plants described in 1987