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Project Name Data (Last Modified On 5/22/2013)

Flora Data (Last Modified On 5/22/2013)
Genus Tabebuia Gomes ex DC.
PlaceOfPublication Rev. Bign. (Bibl. Univ. Geneve) 14. 1838.
Note TYPE: T. uliginosa (Gomes) DC. = T. cassinoides (Lam.) DC.
Synonym Couralia Splitg., Tijdschr. Natuurl. Gesch. Physiol. 9: 14. 1842. TYPE: C. fluviatilis (Aubl.) Splitg. = Tabebuia aquatilis (E. Meyer) Sprague & Sandw. Handroanthus Mattos, Loefgrenia 50: 1. 1970. TYPE: H. albus (Cham.) Mattos = Tabebuia alba (Chaam.) Sandw.
Description Shrubs to giant trees. Leaves simple, 1-foliolate, or digitately 3-7-foliolate. Inflorescence terminal, an open or congested panicle or raceme, or reduced to a single flower. Flowers with the calyx cupular, campanulate or tubular, truncate, bilabiate or shallowly 5-lobed; corolla white, yellow, lavender, magenta, or red, tubular-infundibuliform to tubular-campanulate (Panama), glabrous or puberu- lous on the tube outside; anthers glabrous, the thecae straight, divaricate; pollen grains single, 3-colpate, the exine finely reticulate; ovary linear oblong, often somewhat lepidote, the ovules 2-multi-seriate in each locule. Fruit a subterete elongate-linear or short oblong capsule, dehiscing more or less perpendicularly to the septum, smooth to irregularly wavy-muricate, glabrous to lepidote or variously pubescent; seeds thin and bialate with hyaline-membranaceous wings, or thick, corky and suborbicular without wings
Habit Shrubs to giant trees
Distribution Fewer than 100 species in tropical America ranging from northern Mexico and the West Indies to northern Argentina.
Reference Buchinger, M. Las especies Argentinas del genero Tabebuia. Rev. Invest. Forest. 2: 3-30. 1960. Dugand, A. Bignoniaceae: El genero Tabebuia en Colombia. Mutisia 25: 1-31. 1956.
Reference Gentry, A. H. A revision of Tabebuia (Bignoniaceae) in Central America. Brittonia 22: 246-264. 1970.
Key a. Leaflets not stellate-pubescent; flowers (where known) rose, purple, or white; calyx glandular-lepidote or mealy pubescent (if pubescent, corolla puberulous outside); fruit glandular-lepidote or glabrous, the surface smooth. b. Leaflets glandular-lepidote, not pubescent, linear-oblong to elliptic-oblong; corolla (where known) glabrous outside; calyx and fruit strongly glandular-lepidote. c. Leaves simple to 3-foliolate, blades linear-oblong; inflorescence (where known) few-flowered; corolla (where known) white. d. Tree; leaves simple; calyx (at least in fruit) spathaceously split and striate with 5 raised lines; fruit linear, more than 12 cm long; seeds thin, bialate; well-drained sites ...... 8. T. striata dd. Shrub or small tree; leaves simple to 3-foliolate; calyx 2-3-labiate, not striate; fruit oblong, less than 12 cm long, attenuate at both ends; seeds thick, corky, wingless; Pacific coast mangrove swamps ...... 6. T. palustris cc. Leaves mostly 5-foliolate, blades elliptic-ovate to elliptic-oblong; inflorescence few- to many-flowered; corolla pale pink, rose, or lavender, rarely white. e. Leaflets acuminate or sharply acute; inflorescence usually many-flowered; ma- ture capsule more than 22 cm long; native and cultivated ...... 7. T. rosea ee. Leaflets obtuse; inflorescence few-flowered; mature capsule usually less than 15 cm long; rarely cultivated ...... 5. T. pallida bb. Leaflets pubescent at least in axils of lateral nerves beneath, ovate to ovate-lanceo- late; corolla puberulous outside; calyx mealy pubescent; fruit glabrous ...... 3. T. impetiginosa aa. Leaflets stellate-pubescent at least in axils of lateral nerves beneath; flowers yellow; corolla glabrous outside or with a few trichomes below sinuses; calyx with at least ves- tigial yellowish to reddish-stellate tomentum; fruit stellate to woolly pubescent, or if only inconspicuously lepidote then wavy-muricate. f. Leaflets pubescent only in axils of lateral nerves beneath; the leaves often 7-foliolate; calyx sparingly thick-stellate pubescent; fruit more or less lepidote, wavy-mucronate ...... 2. T. guayacan ff. Leaflets with stellate trichomes scattered over undersurface or along veins; the leaves rarely 7-foliolate; calyx stellate-pubescent, usually also with longer barbate or simple trichomes; fruit with some stellate trichomes. g. Leaves pubscent mostly along veins and petioles; corolla lobe venation of dried specimens conspicuously reticulate to the margins, the color of lobes same as that of tube; calyx without long simple trichomes, pubescent with short stellate trichomes sometimes with some barbate trichomes, its lobes reflexed; fruit more or less rugose, shortly stellate-pubescent; tropical wet forest (in Panama and Costa Rica) ...... 1. T. chrysantha gg. Leaves densely pubescent over whole surface beneath; corolla of dried specimens with venation becoming obscure in the lobes, the lobes appearing yellow and distinctly different from darker-drying corolla tube; calyx golden woolly-pubes- cent with many long (to 7 mm) simple trichomes in addition to the short-stel- late tomentum, its lobes erect; fruit woolly-pubescent; mostly in tropical dry forest and drier parts of tropical moist forest ...... 4. T. ochracea
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