• Tabebuia argentea (Bureau & K.Schum.) Britton
• Tecoma argentea Bureau & K.Schum.

• Tabebuia aurea Benth. & Hook.f. ex S.Moore
• Bignonia aurea Silva Manso
• Tecoma aurea (Silva Manso) DC.
• Bignonia squamellulosa DC.
• Tabebuia argentea (Bureau & K.Schum.) Britton
• Tecoma argentea Bureau & K.Schum.
• Tabebuia caraiba (Mart.) Bureau
• Couralia caraiba (Mart.) Corr.Mello
• Gelseminum caraiba (Mart.) Kuntze
• Handroanthus caraiba (Mart.) Mattos
• Tecoma caraiba Mart.
• Tabebuia suberosa Rusby
• Tecoma caraiba var. grandiflora Hassl.
• Tecoma leucophlaeos Mart. ex DC.
• Handroanthus leucophloeus (Mart. ex DC.) Mattos
• Tecoma squamellulosa DC.
• Tecoma caraiba var. squamellulosa Bureau & K.Schum.
• Tecoma trichocalycina DC.

Description: The Silver Trumpet Tree (Tabebuia argenteaSN|32748]]SN|32762]]), is generally included within (as a synonym of) Tabebuia aureaSN|32748]]SN|32748]], suggesting that there is not really a fundamental difference between the two. The name argentea, meaning "silver", refers to the silver cast of young foliage and branches. The silver cast helps distinguish this tree from the other yellow flowering species.
For more details see: Tabebuia aureaSN|32762]]SN|32748]] |SN|32748]]

Bibliography: Major references and further lectures
1) M.M. Grandtner, Julien Chevrette “Dictionary of Trees, Volume 2: South America: Nomenclature, Taxonomy and Ecology” Academic Press, 21 September 2013
3) Mark Stebbins “Flowering Trees of Florida” Pineapple Press Inc, 1999