Monographs Details:
Authority:
Gentry, Alwyn H. 1992. Bignoniaceae--part II (Tribe Tecomeae). Fl. Neotrop. Monogr. 25: 1-370. (Published by NYBG Press)
Gentry, Alwyn H. 1992. Bignoniaceae--part II (Tribe Tecomeae). Fl. Neotrop. Monogr. 25: 1-370. (Published by NYBG Press)
Family:
Bignoniaceae
Bignoniaceae
Synonyms:
Tecoma guayacan (Seem.) Seem.
Tecoma guayacan (Seem.) Seem.
Description:
Species Description - Large tree to 50 m tall and 2 m dbh, the bark with vertical ridges, somewhat scaly between ridges, the wood extremely hard, the heartwood dark brownish olive, the sapwood contrastingly lighter; branchlets subtetragonal, glabrous or with a few stellate trichomes when young. Leaves palmately 5-7-foliolate, the leaflets lanceolate to ovate, acuminate, rounded to obtuse at base, the terminal 9-30 cm long and 3.7-15.5 cm wide, the laterals progressively smaller, membranaceous to chartaceous, minutely lepidote at least below, stellate-pubescent with multicellular usually 3-branched trichomes in axils of lateral nerves below; terminal petiolule 2.9-7.4 cm long, the lateral petiolules shorter, the petiole 7-23 cm long, glabrous. Inflorescence a terminal panicle, the flowers in groups of 2-3, the branches slightly reddish-stellate, the bracts reduced, caducous. Flowers with the calyx campanulate, irregularly 2-5-lobed, 7-15 mm long, 4-12 mm wide, sparsely stellate-pubescent with short thick trichomes; corolla yellow with reddish pencilling in throat, tubular-infundibuliform, 6-11 cm long, 1.2-2.2 cm wide at mouth of tube, the tube 3.5-5.7 cm long, the lobes 2.2-3.8 cm long, glabrous outside, pilose inside with long mostly branching 3-4-celled trichomes in the sinuses between lobes and from the four lower sinuses to the level of stamen insertion, also glandular-pubescent at level of stamen insertion; stamens didynamous, the thecae divaricate, 2-3 mm long; pistil 2.4-3.3 cm long, the ovary linear, 3-5 mm long, 1.5-2.5 mm wide, glabrous to somewhat lepidote, sometimes slightly verrucose toward apex but without elevated glands, the ovules 8-10 seriate in each locule; disk cupular, 0.5-1 mm long, 3-4 mm wide. Fruit a linear-cylindric capsule, 29-61 cm long, 1-2.9 cm wide, essentially glabrous or inconspicuously lepidote or with very sparse thick-stellate pubescence, the surface usually irregularly and rather strongly mucronulate-ridged; seeds thin, bialate, 0.9-1.1 cm long, 3.5-4 cm wide, the wings hyaline-membranaceous, sharply demarcated from seed body.
Species Description - Large tree to 50 m tall and 2 m dbh, the bark with vertical ridges, somewhat scaly between ridges, the wood extremely hard, the heartwood dark brownish olive, the sapwood contrastingly lighter; branchlets subtetragonal, glabrous or with a few stellate trichomes when young. Leaves palmately 5-7-foliolate, the leaflets lanceolate to ovate, acuminate, rounded to obtuse at base, the terminal 9-30 cm long and 3.7-15.5 cm wide, the laterals progressively smaller, membranaceous to chartaceous, minutely lepidote at least below, stellate-pubescent with multicellular usually 3-branched trichomes in axils of lateral nerves below; terminal petiolule 2.9-7.4 cm long, the lateral petiolules shorter, the petiole 7-23 cm long, glabrous. Inflorescence a terminal panicle, the flowers in groups of 2-3, the branches slightly reddish-stellate, the bracts reduced, caducous. Flowers with the calyx campanulate, irregularly 2-5-lobed, 7-15 mm long, 4-12 mm wide, sparsely stellate-pubescent with short thick trichomes; corolla yellow with reddish pencilling in throat, tubular-infundibuliform, 6-11 cm long, 1.2-2.2 cm wide at mouth of tube, the tube 3.5-5.7 cm long, the lobes 2.2-3.8 cm long, glabrous outside, pilose inside with long mostly branching 3-4-celled trichomes in the sinuses between lobes and from the four lower sinuses to the level of stamen insertion, also glandular-pubescent at level of stamen insertion; stamens didynamous, the thecae divaricate, 2-3 mm long; pistil 2.4-3.3 cm long, the ovary linear, 3-5 mm long, 1.5-2.5 mm wide, glabrous to somewhat lepidote, sometimes slightly verrucose toward apex but without elevated glands, the ovules 8-10 seriate in each locule; disk cupular, 0.5-1 mm long, 3-4 mm wide. Fruit a linear-cylindric capsule, 29-61 cm long, 1-2.9 cm wide, essentially glabrous or inconspicuously lepidote or with very sparse thick-stellate pubescence, the surface usually irregularly and rather strongly mucronulate-ridged; seeds thin, bialate, 0.9-1.1 cm long, 3.5-4 cm wide, the wings hyaline-membranaceous, sharply demarcated from seed body.
Discussion:
This species is very closely related to T. serratifolia which it replaces almost allopatrically in extreme northwestern South America and Central America. Apparently both species occur together in the Magdalena Valley of Colombia and Amazonian Peru. The main differences from T. serratifolia are stellate (rather than simple) trichomes in the leaf axils, lack of raised warty glands on the ovary, more densely pilose throat, and sharply raised ridges on the fruit.
This species is very closely related to T. serratifolia which it replaces almost allopatrically in extreme northwestern South America and Central America. Apparently both species occur together in the Magdalena Valley of Colombia and Amazonian Peru. The main differences from T. serratifolia are stellate (rather than simple) trichomes in the leaf axils, lack of raised warty glands on the ovary, more densely pilose throat, and sharply raised ridges on the fruit.
Distribution:
Cayo Belize Central America| Toledo Belize Central America| Antioquia Colombia South America| Chocó Colombia South America| Córdoba Colombia South America| Santander Colombia South America| Alajuela Costa Rica Central America| Heredia Costa Rica Central America| Limón Costa Rica Central America| Puntarenas Costa Rica Central America| San José Costa Rica Central America| Alta Verapaz Guatemala Central America| Izabal Guatemala Central America| Atlantida Honduras Central America| Gracias a Dios Honduras Central America| Yoro Honduras Central America| Chiapas Mexico North America| Oaxaca Mexico North America| Tabasco Mexico North America| Veracruz Mexico North America| Chontales Nicaragua Central America| Río San Juan Nicaragua Central America| Zelaya Nicaragua Central America| Canal Zone Panamá Central America| Chiriquí Panamá Central America| Colón Panamá Central America| Darién Panamá Central America| Panamá Panama Central America| Madre de Dios Peru South America| Ucayali Peru South America| Bolívar Venezuela South America| Mérida Venezuela South America| Táchira Venezuela South America| Zulia Venezuela South America|
Cayo Belize Central America| Toledo Belize Central America| Antioquia Colombia South America| Chocó Colombia South America| Córdoba Colombia South America| Santander Colombia South America| Alajuela Costa Rica Central America| Heredia Costa Rica Central America| Limón Costa Rica Central America| Puntarenas Costa Rica Central America| San José Costa Rica Central America| Alta Verapaz Guatemala Central America| Izabal Guatemala Central America| Atlantida Honduras Central America| Gracias a Dios Honduras Central America| Yoro Honduras Central America| Chiapas Mexico North America| Oaxaca Mexico North America| Tabasco Mexico North America| Veracruz Mexico North America| Chontales Nicaragua Central America| Río San Juan Nicaragua Central America| Zelaya Nicaragua Central America| Canal Zone Panamá Central America| Chiriquí Panamá Central America| Colón Panamá Central America| Darién Panamá Central America| Panamá Panama Central America| Madre de Dios Peru South America| Ucayali Peru South America| Bolívar Venezuela South America| Mérida Venezuela South America| Táchira Venezuela South America| Zulia Venezuela South America|
Common Names:
primavera, guayacán, canaguato blanco, guayacán, tahuari
primavera, guayacán, canaguato blanco, guayacán, tahuari