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Etymology for page Handroanthus heptaphyllus
Its tribe name, "Tecomeae", is derived from its Brazilian vernacular name: tabebuia or taiaveruia. Its species name, "heptaphyllus", is derived from the Greek prefixes "hepta" and "phyllon" meaning "seven" and "leaf" respectively.

Virulence
Pili are responsible for virulence in the pathogenic strains of many species of bacteria including E. coli, Vibrio cholerae, and many strains of Streptococcus among others. This is because the presence of pili greatly enhance bacteria's ability to bind to body tissues, which then increases replication rates and ability to interact with the host organism. If a species of bacteria has multiple strains but only some are pathogenic, it is likely that the pathogenic strains will have pili while the nonpathogenic strains won't.

These attachment pili may then result in the development of further virulence traits. V. cholerae first evolved pili, allowing it to bind to human tissues and form microcolonies. The pilus then served as a binding site for a lysogenic bacteriophage (CTXɸ) that carries the disease-causing toxin. The gene for this toxin, once incorporated into the bacterium's genome, is expressed when the gene coding for the pilus is expressed (hence the name "toxin mediated pilus").