Biology:Brachylaena

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Short description: Genus of flowering plants

Brachylaena
Brachylaena discolor tree - South Africa.jpg
Branches of Brachylaena discolor
Brachylaena huillensis 1DS-II 8894.jpg
Inflorescences of female Brachylaena huillensis plant
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Tarchonantheae
Genus: Brachylaena
R.Br.
Species

See text

Synonyms[1][2]
  • Oligocarpha Cass.
  • Synchodendron Bojer ex DC.

Brachylaena is a genus of flowering plants in the aster, or composite, family, Asteraceae or Compositae. Several are endemic to Madagascar , and the others are distributed in mainland Africa, especially the southern regions.[3]

These are trees and shrubs with alternately arranged leaves. One of these, Brachylaena merana, is the tallest of all composites ('daisy trees") at up to 132 feet (forty meters).[4] and Brachylaena huillensis of East Africa is of similar height. They are dioecious, with male and female flowers occurring on separate individuals. The flower heads are somewhat disc-shaped. Heads with female flowers are larger and produce larger pappi.[5]

B. huillensis is the only widespread species,[3] growing as a dominant tree in Brachylaena woodlands and a common species in some eastern African forests. It provides critical habitat for many animal species. It is also sought after for its wood and has been overexploited.[6]

Species[2]


Some species are subject of dispute:

  • Brachylaena rotundata S.Moore is seen by some as Brachylaena discolor var. rotundata (S.Moore) Beentje[2]
  • Brachylaena transvaalensis Hutch. ex E.Phillips & Schweick. is seen as synonym of Brachylaena discolor var. transvaalensis (E.Phillips & Schweick.) Beentje[2]

References

  1. Flann, C (ed) 2009+ Global Compositae Checklist
  2. 2.0 2.1 2.2 2.3 "Brachylaena R.Br." (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/7973-1. Retrieved 15 August 2022. 
  3. 3.0 3.1 Beentje, H. J. (2000). The genus Brachylaena (Compositae: Mutisieae). Kew Bulletin 55(1), 1-41.
  4. Carlquist, Dr. Sherwin. Island Biology. New York & London: Univ. of Columbia Press. p. 419. 
  5. Hyde, M. A., et al. (2013). Brachylaena. Flora of Zimbabwe.
  6. Cordeiro, N. J. and M. Githiru. (2000). Conservation evaluation for birds of Brachylaena woodland and mixed dry forest in north-east Tanzania. Bird Conservation International 10(1), 47-65.

Wikidata ☰ Q2666313 entry