Table 1 in An updated synopsis of Tanaecium (Bignonieae, Bignoniaceae)

Table 1. Characters useful to recognize Tanaecium species.
Tanaecium speciesBranchlet sectionInterpetiolar glandular fieldProphylls of the axillary budsTendril typeInflorescence typeCalyx shapeCalyx apertureCorolla colorCorolla mouth colorCorolla shapeOvules seriesFruit shapeSeeds wings1.Tanaecium affineterete or tetragonalpresentsubulate or bromeliad-likesimplecompound thyrsecampanulatebilabiatewhitewhiteinfundibularonelinearwell-developed2.Tanaecium apiculatumtereteabsentsubulate or bromeliad-likeabsentracemetubulartruncatewhitewhitewide infundibularmany--3.Tanaecium bilabiatumtereteabsentsubulate or bromeliad-likesimplethyrsecampanulate or tubularbilabiatewhiteyellowinfundibularonelinearvestigial4.Tanaecium caudiculatumtetragonalabsentsubulate or bromeliad-likesimplethyrsecampanulatetruncatepale yellowwhitecampanulateonelinearwell-developed5.Tanaecium crucigerumteretepresentminute and triangular or bromeliad-likesimplethyrsecupulartruncatewhitewhitewide infundibularmanyellipticabsent6.Tanaecium cyrtanthumteretepresentminute and triangular or bromeliad-likesimplethyrsecupulartruncatewhitewhitewide infundibularmanylinearwell-developed7.Tanaecium decorticansteretepresentsubulatetrifidthyrsecampanulate or cupulartruncatepinkwhiteinfundibularonelinearwell-developed8.Tanaecium dichotomumteretepresent or absentsubulate or bromeliad-likesimplethyrsecampanulatebilabiatepinkwhitecampanulate or infundibularonelinearwell-developed9.Tanaecium duckeitereteabsentsubulatetrifidthyrsetubularobliquewhitewhitewide infundibularmanylinearwell-developed10.Tanaecium exitiosumtereteabsentsubulatesimplethyrsecampanulatebilabiatewhitewhitewide infundibular---11.Tanaecium jarobateretepresentminute and triangular or bromeliad-likesimplethyrsecampanulatetruncatewhitewhitewide infundibularmanyellipticabsent12.Tanaecium kuhlmanniitereteabsentsubulatetrifidthyrsetubularobliquewhitewhitewide infundibularmanylinearwell-developed13.Tanaecium neobrasiliensetereteabsentsubulate or bromeliad-liketrifidcompound thyrsecampanulatetruncatemagenta-infundibulartwolinearwell-developed14.Tanaecium parviflorumterete or tetragonalabsentsubulate or bromeliad-likesimplethyrsecampanulatetruncatewhiteyellowinfundibulartwolinearwell-developed15.Tanaecium pyramidatumtereteabsentsubulate or bromeliad-likebifid or trifidcompound thyrsecampanulatebilabiate or truncatepink or magentawhiteinfundibularonelinearwell-developed16.Tanaecium revillaetereteabsentsubulate or bromeliad-likesimplethyrsecampanulatebilabiatepinkwhiteinfundibularonelinear-oblongvestigial17.Tanaecium selloitereteabsentminute and triangular or foliaceoussimplethyrsecampanulatebilabiatepinkwhiteinfundibularonelinearwell-developed18.Tanaecium tetragonolobumterete or tetragonalpresentsubulatesimplethyrsecupulartruncatewhiteyellowinfundibularmanylinearwell-developed19.Tanaecium tetramerumtereteabsentsubulate or bromeliad-likeabsentfasciculetubulartruncatewhitewhitehypocrateriformtwoellipticwell-developed20.Tanaecium truncatumteretepresentsubulate or bromeliad-liketrifidthyrsecampanulateoblique or truncatepale yellowyellowinfundibulartwolinearwell-developed21.Tanaecium xanthophyllumteretepresentminute and triangular or bromeliad-liketrifidcompound thyrsecampanulatebilabiateyellowyellowinfundibulartwolinearwell-developed