Erechtites | |
---|---|
Erechtites hieraciifolius | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Subfamily: | Asteroideae |
Tribe: | Senecioneae |
Genus: | Erechtites Raf. |
Type species | |
Erechtites praealtus Raf., syn of E. hieraciifolius [1] [2] | |
Synonyms [2] | |
|
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, [3] [4] but some species are widely distributed weeds. [3] [5] [6]
Erechtites consists of annual or perennial herbs with large taproots and very often with a pungent odor. Leaves are usually ovate or lanceolate (sometimes pinnately lobed or pinnatifid). Flower heads may sometimes contain as many as 100 yellow or white (rarely pink) disc florets but no ray florets. [3]
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. [7] [8]
27 species are recognised by Plants of the World Online [9]
Alternatively, a more limited genus circumscription restricts the genus to New World species and only recognises six species in two sections: [10]
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 (Art. 62.4) 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. [3] [11]
Leucopogon is a genus of about 150-160 species of shrubs or small trees in the family Ericaceae, in the section of that family formerly treated as the separate family Epacridaceae. They are native to Australia, New Zealand, New Caledonia, the western Pacific Islands and Malaysia, with the greatest species diversity in southeastern Australia. Plants in this genus have leaves with a few more or less parallel veins, and tube-shaped flowers usually with a white beard inside.
The Gnaphalieae are a tribe of flowering plants in the family Asteraceae. It is most closely related to the tribes Anthemideae, Astereae, and Calenduleae.
Olearia, most commonly known as daisy-bush, is a genus of flowering plants belonging to the family Asteraceae, the largest of the flowering plant families in the world. Olearia are found in Australia, New Guinea and New Zealand. The genus includes herbaceous plants, shrubs and small trees. The latter are unusual among the Asteraceae and are called tree daisies in New Zealand. All bear the familiar daisy-like composite flowerheads in white, pink, mauve or purple.
Bedfordia is a genus of flowering plants belonging to the family Asteraceae. The genus includes 3 species, all endemic to Australia.
Brachyglottis is a genus of flowering plants in the family Asteraceae. The genus was erected on November 29, 1775, by Johann Reinhold Forster and Georg Forster. The name was derived from the Greek brachus ("short") and glottis a reference to the size of the ray florets.
Erechtites hieraciifolius is a plant in the daisy family, Asteraceae. It is native to the Americas, but is found many places around the world having been introduced by human activity. It is introduced in Hawaii, China, and Southeast Asia.
Fireweed is a perennial herbaceous plant in the willowherb family (Onagraceae).
Senecio crassiflorus, in Portuguese: margarida-das-dunas, one of the native South American Senecio and an herbaceous dune dwelling perennial.
Senecio madagascariensis, also known as Madagascar ragwort, is a species of the genus Senecio and family Asteraceae that is native to Southern Africa. Other common names include Madagascar groundsel and fireweed. It has been included on the noxious weeds list for Hawaii and the reject list for Australia. S.madagascariensis is the diploid cytotype of S.inaequidens.
Pieter B. Pelser is a lecturer in Plant Systematics and the curator of the herbarium at the University of Canterbury in Christchurch, New Zealand. One research interest is the evolutionary history of the tribe Senecioneae, one of the largest tribes in the largest family of flowering plants. He wrote the most recent attempt to define and delimit this tribe and its problematic founding species Senecio. He also studies insects that eat these plants (Longitarsus) which contain pyrrolizidine alkaloids and what makes them choose which plants they eat.
Senecio glossanthus is an annual herb native to Australia. In Western Australia it is commonly known as slender groundsel.
Ixiochlamys is a genus of Australian flowering plants in the family Asteraceae.
Scapisenecio pectinatus, synonym Senecio pectinatus, commonly known as alpine groundsel, is a species of flowering plant in the aster family. The species occurs in alpine areas of south-eastern Australia in peat-based soils. It has divided leaves forming a basal rosette and produces a single yellow flower head on a stalk up to 20 cm high.
Erechtites valerianifolius, common name tropical burnweed is a New World species of plants in the sunflower family. It is native to Mexico, Central America, South America, and the West Indies. It is also naturalized as a weed in much of the tropical Old World.
Erechtites glomeratus, common name New Zealand fireweed, or cutleaf burnweed, or fireweed or Cluster-headed fireweed, is a species of plant in the sunflower family. It is native to Australia and New Zealand, and also naturalized on the Pacific Coast of the United States.
Senecio quadridentatus is native to Australia and New Zealand. In New Zealand it is known by its Māori name pahokoraka or pekapeka. Senecio quadridentatus is an annual or perennial herbaceous flowering plant in the family Asteraceae. It is also known as Erechtites quadridentata Labill by the synonyms.
Senecio minimus, commonly known as toothed fireweed and coastal burnweed, is a species of plant in the sunflower family. It is native to Australia and New Zealand, and also naturalized on the Pacific Coast of the United States.
Lordhowea is a genus of flowering plant in the family Asteraceae, native to eastern and south-eastern Australia and Lord Howe Island. The genus was established by Bertil Nordenstam in 1978.
Scapisenecio is a genus of flowering plant in the family Asteraceae, native to south-eastern Australia, particularly Tasmania. The genus was established in 2020.