Drosera purpurascens is a compact tuber

Tuber

Tubers are various types of modified plant structures that are enlarged to store nutrients. They are used by plants to survive the winter or dry months and provide energy and nutrients for regrowth during the next growing season and they are a means of asexual reproduction...

ous perennial

Perennial plant

A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...

 species in the genus Drosera that is endemic to south-west Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

. It produces 1 erect or 2 to 5 semi-erect lateral stems that grow to 3 to 10 cm long. The compact size of the plant combined with relatively long petiole

Petiole (botany)

In botany, the petiole is the stalk attaching the leaf blade to the stem. The petiole usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules. Leaves lacking a petiole are called sessile, or clasping when they partly surround the...

s distinguish it from all other members of the section

Section (botany)

In botany, a section is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section, and the rank of series, if present, is below the section. Sections are typically used to help organise very large genera, which may have hundreds of species...

 Stolonifera

Drosera sect. Stolonifera

Drosera sect. Stolonifera is a section of nine or ten tuberous perennial species in the genus Drosera that are endemic to south-west Western Australia...

. It is native to a region from Mount Cooke to near Katanning

Katanning, Western Australia

Katanning is a town located 277 km south east of Perth, Western Australia on the Great Southern Highway. At the 2006 census, Katanning had a population of 3,808.-History:...

 and Ongerup

Ongerup, Western Australia

Ongerup is a town located 410 km south-east of Perth and 54 km east of Gnowangerup in the Great Southern region of Western Australia.- History :The name Ongerup means Place of the male kangaroo in the local Noongar language....

 south to the Denmark

Denmark, Western Australia

Denmark is a town in the Great Southern region of Western Australia, south-south-east of the state capital of Perth. At the 2006 census, Denmark had a population of 2,732.-History:...

-Albany

Albany, Western Australia

Albany is a port city in the Great Southern region of Western Australia, some 418 km SE of Perth, the state capital. As of 2009, Albany's population was estimated at 33,600, making it the 6th-largest city in the state....

 region. It grows in sand-laterite

Laterite

Laterites are soil types rich in iron and aluminium, formed in hot and wet tropical areas. Nearly all laterites are rusty-red because of iron oxides. They develop by intensive and long-lasting weathering of the underlying parent rock...

 soils and flowers from July to October, flowering en masse after bushfires.

It was first formally described by August Friedrich Schlotthauber in 1856. In 1982 N. G. Marchant

N. G. Marchant

Neville Graeme Marchant is a retired Western Australian botanist. He was formerly the Director of the Western Australian Herbarium.Marchant began working for the Western Australian Herbarium at the age of 15, as a laboratory assistant to Government Botanist Charles Gardner. Later he attended the...

 described a subspecies of D. stolonifera

Drosera stolonifera

Drosera stolonifera, sometimes referred to as the leafy sundew, is a tuberous perennial species in the genus Drosera that is endemic to Western Australia. It produces 2 to 3 semi-erect lateral stems that grow 10 to 15 cm long. It is most closely related to D. purpurascens, but differs by...

that was later reduced to synonymy with D. purpurascens.