''Drosera'' subg. ''Ergaleium'', collectively known as the tuberous sundews, is a

subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...

of three

sections Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sig ...

tuber Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing ...

ous species in the genus ''

Drosera ''Drosera'', which is commonly known as the sundews, is one of the largest genus, genera of carnivorous plants, with at least 194 species. 2 volumes. These members of the family Droseraceae lure, capture, and digest insects using stalked mucil ...

''. The three sections represent natural groups, including the rosetted species (section '' Erythrorhiza''), the fan-leaved species (section ''

Stolonifera Stolonifera is a suborder of soft corals in the order Alcyonacea. Members of this taxon are characterised by having separate polyps budding off an encrusting horizontal, branching stolon. The skeletons include spicules or consists of a horny exte ...

''), and the erect or scrambling species (section '' Ergaleium'').Lowrie, A. 2005
A taxonomic revision of ''Drosera'' section ''Stolonifera'' (Droseraceae), from south-west Western Australia
''Nuytsia'', 15(3): 355-393.Rice, B. A. (2008)

v. 11.5. Accessed online: 1 February 2009. The subgenus was first formally described by

Augustin Pyramus de Candolle Augustin Pyramus (or Pyrame) de Candolle (, , ; 4 February 17789 September 1841) was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candol ...

in 1824, but the exact taxonomy has been changed frequently since then. In 1848,

Jules Émile Planchon Jules Émile Planchon (21 March 1823 – 1 April 1888) was a French botanist born in Ganges, Hérault. Biography After receiving his Doctorate of Science at the University of Montpellier in 1844, he worked for a while at the Royal Botanic Garde ...

reorganized the species into sections,

series Series may refer to: People with the name * Caroline Series (born 1951), English mathematician, daughter of George Series * George Series (1920–1995), English physicist Arts, entertainment, and media Music * Series, the ordered sets used in ...

, and subseries.

George Bentham George Bentham (22 September 1800 – 10 September 1884) was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century". Born into a distinguished family, he initially studi ...

disagreed with Planchon's classification and so in 1864 he divided the genus into just two sections, with all tuberous species in sect. ''Ergaleium'' and those without tubers in sect. ''Rorella''.

Ludwig Diels Dr. Friedrich Ludwig Emil Diels (24 September 1874 – 30 November 1945) was a German botanist. Diels was born in Hamburg, the son of the classical scholar Hermann Alexander Diels. From 1900 to 1902 he traveled together with Ernst Georg Prit ...

reclassified the genus in his 1906

monograph A monograph is a specialist work of writing (in contrast to reference works) or exhibition on a single subject or an aspect of a subject, often by a single author or artist, and usually on a scholarly subject. In library cataloging, ''monograph ...

of the family, recognizing subgenus ''Ergaleium'' and two sections within it: ''Erythrorhiza'' (Planchon) Diels and ''Polypeltes'' Diels. Another reclassification occurred in 1977, when

Larry Eugene DeBuhr Larry is a masculine given name in English, derived from Lawrence or Laurence. It can be a shortened form of those names. Larry may refer to the following: People Arts and entertainment * Larry D. Alexander, American artist/writer *Larry Boone ...

added section ''Stolonifera'', which was based on Planchon's subseries ''Stoloniferae''. Section ''Polypeltes'' is now known by the older

autonym Autonym may refer to: * Autonym, the name used by a person to refer to themselves or their language; see Exonym and endonym * Autonym (botany), an automatically created infrageneric or infraspecific name See also * Nominotypical subspecies, in zo ...

sect. ''Ergaleium''.

References

Ergaleium Plant subgenera {{Droseraceae-stub