Erechtites


Erechtites is a genus of flowering plants in the daisy family known commonly as fireweeds or burnweeds. They are native to the Americas and Australia, but some species are widely distributed weeds.

Description

Erechtites consists of annual or perennial herbs with large taproots and very often with a pungent odor. Leaves are usually ovate or lanceolate. Flower heads may sometimes contain as many as 100 yellow or white disc florets but no ray florets.

Taxonomy and species

Some species in this genus are treated as members of Senecio by some authors, and several other species are considered variants of Erechtites hieraciifolius, so there may be as few as 5 distinct species in this genus. In particular, not all authors agree on whether to include a dozen or so species native to Australia and New Zealand in Erechtites.
;Species
27 species are recognised by Plants of the World Online
Alternatively, a more limited genus circumscription restricts the genus to New World species and only recognises six species in two sections:Erechtites sect. Erechtites
  • * Erechtites hieracifolius
  • * Erechtites missionis
  • * Erechtites valerianifolius
  • * Erechtites petiolatusErechtites sect. Goyazenses Belcher
  • * Erechtites goyazensis
  • * Erechtites ignobilis
The genus name Erechtites is considered masculine by some botanists and feminine by others. Hence some species names may end in "-us" or "-a," for example, Erechtites valerianifolius versus E. valerianifolia. International Code of Botanical Nomenclature specifies that generic names ending in "-ites" are to be treated as masculine, hence the "-us" ending in such cases is to be preferred over the "-a" ending.