Handroanthus chrysotrichus

Handroanthus chrysotrichus
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Bignoniaceae
Genus:	Handroanthus
Species:	H. chrysotrichus
Binomial name
Handroanthus chrysotrichus (Mart. ex DC.) Mattos
Synonyms
Gelseminum chrysotrichum(Mart. ex A. DC.) Kuntze Handroanthus chrysotrichus(Mart. ex A. DC.) Mattos Handroanthus chrysotrichus var. obtusata(A. DC.) Mattos Handroanthus pedicellatus(Bureau & K. Schum. ex Mart.) Mattos Tabebuia chrysotricha var. obtusata(A. DC.) Toledo Tabebuia flavescens Tabebuia pedicellata Tecoma chrysotrichaMart. ex A. DC.M Tecoma chrysotricha var. obtusata(A. DC.) Bureau & K. Schum. ex Mart. Tecoma flavescens(Velloso) Mart. ex A. DC. Tecoma grandisF. Kränzl. Tecoma obtusataA. DC. Tecoma ochracea var. denudataCham.Tecoma pedicellataBureau & K. Schum. ex Mart.

Handroanthus chrysotrichus, synonym Tabebuia chrysotricha, commonly known as the golden trumpet tree, is a semi-evergreen/semi-deciduous (shedding foliage for a short period in late spring) ^[1] tree from Brazil. It is very similar to and often confused with Tabebuia ochracea . In Portuguese it is called ipê amarelo and its flower is considered the national flower of Brazil.

Growth

Handroanthus chrysotrichus grows to a height of 5 to 8 m (15 to 25 ft), sometimes up to 20 m (50 ft), ^[1] with a spread of 8 to 11 m (25 to 35 ft). It has very showy golden-yellow to red flowers in the spring. These are rich in nectar and thus the tree is a useful honey plant. While it is not especially popular with hummingbirds, some of these – e.g. glittering-bellied emerald (Chlorostilbon lucidus) and white-throated hummingbird (Leucochloris albicollis) – seem to prefer them over the flowers of other Tabebuia species. ^[2]

The golden trumpet tree is grown outside Brazil as a street tree and garden tree. The USDA rates it for hardiness zones 9b through 11, and moderately drought-tolerant.

Concern has been raised that it is becoming a weed in tropical and sub-tropical Australia, though it has not yet been declared. ^[3]

Taxonomy

A 2007 DNA study of various members classified in the genus Tabebuia showed that the taxon was polyphyletic, and two genera were resurrected to separate these members into three separate clades: Roseodendron , Handroanthus , and Tabebuia . ^[4] Tabebuia chrysotricha was moved to Handroanthus chrysotrichus, characterized by the hardness of its wood and high lapachol content. ^[4]

Gallery

• 
  Trunk
• 
  Fruit
• 
  Flowers

References

1. Gilman, Edward F.; Watson, Dennis G. (21 March 2007). "ENH-772/ST614: Tabebuia chrysotricha: Golden Trumpet Tree". edis.ifas.ufl.edu. University of Florida. Retrieved 12 December 2015.
2. Baza Mendonça & dos Anjos (2005)
3. Technigro Australia Pty. Ltd (2013)
4. Susan O. Grose and R. G. Olmstead

Further reading

• Baza Mendonça, Luciana & dos Anjos, Luiz (2005): Beija-flores (Aves, Trochilidae) e seus recursos florais em uma área urbana do Sul do Brasil [Hummingbirds (Aves, Trochilidae) and their flowers in an urban area of southern Brazil]. [Portuguese with English abstract] Revista Brasileira de Zoologia22(1): 51–59. doi : 10.1590/S0101-81752005000100007 PDF fulltext
• Susan O. Grose and R. G. Olmstead (2007): Taxonomic Revisions in the Polyphyletic Genus Tabebuia s. l. (Bignoniaceae). Systematic Botany"32"(3):660-670. doi : 10.1600/036364407782250652 abstract
• Technigro Australia Pty. Ltd. (2013): Weed Watch: Golden Trumpet Tree Tabebuia Chrysotricha http://www.technigro.com.au/documents/GoldenTrumpetTree.pdf Archived 2015-03-03 at the Wayback Machine

External links

• Tabebuia chrysotricha, Golden Trumpet Tree Archived 2010-06-01 at the Wayback Machine
• Tabebuia chrysotricha / Handroanthus chrysotrichus (Yellow trumpet tree) - JCU
• Tabebuia chrysotricha - Golden Trumpet Tree - Plant Finder- Sunset.com
• http://www.bioone.org/doi/abs/10.1600/036364407782250652