Asterids

Oregano from Lamiales

In the APG IV system (2016) for the classification of flowering plants, the name asterids denotes a clade (a monophyletic group).[1] Common examples include the forget-me-nots, nightshades (including potatoes, eggplants, tomatoes, peppers and tobacco), petunias, morning glory and sweet potato, coffee, lavender, lilac, olive, jasmine, honeysuckle, ash tree, teak, snapdragon, sesame, psyllium, garden sage, and table herbs such as mint, basil, and rosemary.

Most of the taxa belonging to this clade had been referred to the Asteridae in the Cronquist system (1981) and to the Sympetalae in earlier systems. The name asterids (not necessarily capitalised) resembles the earlier botanical name but is intended to be the name of a clade rather than a formal ranked name, in the sense of the ICBN.

Phylogeny

The phylogenetic tree presented hereafter has been proposed by the APG IV project.[1]

asterids 

 Cornales

 Ericales
campanulids

Aquifoliales

Asterales

Escalloniales

Bruniales

Apiales

Dipsacales

Paracryphiales







lamiids

Icacinales

Metteniusales

Garryales

Boraginales

Gentianales

Vahliales

Lamiales

Solanales









History

Genetic analysis carried out after APG II maintains that the sister to all other asterids are the Cornales. A second order that split from the base of the asterids are the Ericales. The remaining orders cluster into two clades, the lamiids and the campanulids. The structure of both of these clades has changed in APG III.[2][3]

In APG III system, the following clades were renamed:

euasterids I → lamiids
euasterids II → campanulids[2][3]

References

  1. 1 2 Angiosperm Phylogeny Group (2016). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV". Botanical Journal of the Linnean Society. 181 (1): 1–20. doi:10.1111/boj.12385.
  2. 1 2 Angiosperm Phylogeny Group (2003). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". Botanical Journal of the Linnean Society. 141 (4): 399–436. doi:10.1046/j.1095-8339.2003.t01-1-00158.x.
  3. 1 2 Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x.

External links

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