Mansoa alliacea

Diagnostic description 5

Mansoa alliacea (Lam.) A. H. Gentry, Ann. Missouri Bot. Gard. 66: 782. 1979.

Fig. 45. H

Basionym: Bignonia alliacea Lam.

Synonym: Adenocalymna obovatum Urb.

Woody vine, which climbs by tendrils and attains 10-15 m in length. Young stems quadrangular, with the angles ribbed; mature stems cylindrical or subcylindrical, lenticellate; cross section with a cross of 4 arms, formed by the phloem tissue; nodes slightly compressed with a glandular interpetiolar zone; pseudostipules ovate, ca. 5 mm long. Leaves opposite, 2-foliolate, sometimes with a terminal tendril, trifid, deciduous, 20-25 cm long; leaflets 9-30 × 4.5-18 cm, elliptical or broadly elliptical, chartaceous, the apex obtuse or obtusely acuminate, the base acute, rounded, or obtuse and sometimes unequal, the margins undulate or crenate; upper surface dull, glabrous, with the venation slightly prominent; lower surface light green, dull, minutely lepidote, with the venation slightly prominent, the axils of the secondary veins with a group of minute punctiform glands; petioles and petiolules glabrous, the petioles 7-30 mm long, the petiolules with two keels formed by the decurrent base of the blade, 7-30 mm long. Flowers few, in axillary racemes; pedicels 7-15 mm long. Calyx green, campanulate or broadly campanulate, simple, puberulous, 5-8 mm long, truncate, slightly crenate at the apex; corolla violet-pink or lavender, infundibuliform, 7.5-9 cm long, the limb 4-5 cm in diameter, with five rounded lobes; stamens inserted; ovary cylindrical, lepidote. Capsule oblong, woody, light brown, 30-35 × 2.5- 3 cm, swollen, with a longitudinal rib on the middle portion of each of the valves; seeds asymmetrically ovate, compressed, thick, woody, 1.5-2 cm long.

Phenology: Collected in flower from October to May and in fruit in October.

Status: Exotic, cultivated in Puerto Rico.

Distribution 6

Distribution: Cited by Britton and P. Wilson (1925) for the Agricultural Experiment Station in Trujillo Alto. Species native to central South America, from the Amazonian regions of Peru and Brazil, also in Guyana.

Sources and Credits

  1. (c) Kenpei, some rights reserved (CC BY-SA),
  2. (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, some rights reserved (CC BY-NC-SA),
  3. (c) Craig Franklin, some rights reserved (CC BY-SA),
  4. (c) Craig Franklin, some rights reserved (CC BY-SA),
  5. (c) Pedro Acevedo-Rodríguez, some rights reserved (CC BY-NC-SA),
  6. (c) Pedro Acevedo-Rodríguez, some rights reserved (CC BY-NC-SA),

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