Duguetia vallicola J.F.Macbr.

  • Authority

    Maas, Paulus J. M., et al. 2003. (Annonaceae). Fl. Neotrop. Monogr. 88: 1-274 pp. (Published by NYBG Press)

  • Family

    Annonaceae

  • Scientific Name

    Duguetia vallicola J.F.Macbr.

  • Type

    Type: Colombia. Caldas: Buenavista, non-flooded valley of Río Magdalena, alt. 170 m, 11 Jul 1917 (fr), Whitford & Pinzon 3 (holotype, GH; isotypes, A, NY, P, S, US).

  • Description

    Species Description - Tree or shrub, 7-25 m tall, 10-30 cm in diam. Young twigs and petioles totally covered with stellate hairs 0.10.5 mm in diam. Petioles 2-7 mm long, 1-2 mm in diam. Lamina narrowly elliptic to narrowly obovate, sometimes slightly falcate, 15-34 cm long, 4.5-8.5 cm wide, leaf index 3.3-4.5, chartaceous, greyish green to brown above, green to pale brown below, sparsely covered with stellate hairs 0.1-0.4 mm in diam. above (young leaves densely so), sparsely to rather densely covered with stellate hairs 0.1-0.4 mm in diam. below, base obtuse to rounded, apex acute to acuminate (acumen to 25 mm long), primary vein impressed above, secondary veins curved, 12-19 on either side of primary vein, slightly raised above, angles with primary vein 55-70°, loopforming at obtuse angles, loops indistinct, smallest distance between loops and margin 2-6 mm, tertiary veins flat above. Inflorescences among leaves or sometimes on older branchlets, supra-axillary (sometimes seemingly axillary) to leaf-opposed, a single rhipidium or sometimes composed of 2 rhipidia and/or slightly ramified. Rhipidia 1-3-flowered, to 5 flowers in succession. Indument: pedicels and outer side of bracts densely covered with stellate scales ca. 0.1 mm in diam., both sides of sepals and petals totally to densely covered with stellate hairs 0.1-0.4 mm in diam. Peduncle 2-4 mm long, 1.5-4 mm in diam., fruiting peduncle to 7 mm long. Sympodial rachis to 5 mm long. Pedicels 10-15 mm long, 1-2 mm in diam., fruiting pedicels to 30 mm long, 3-6 mm in diam. Upper bract at 1/2 to 2/3 of base of pedicel, more or less foliaceous, deltate, 4-10 mm long, amplexicaul, caducous. Flower buds broadly to very broadly ovoid, acute. Flowers greenish white in vivo. Sepals free, broadly obovate, 5-12 mm long, 5-10 mm wide, apex, distinctly ribbed, soon reflexed. Petals subequal, ovate, 15-25 mm long, 10-15 mm wide, obtuse, inner base of inner petals callóse, distinctly grooved. Stamens 1.5-2.5 mm long, color unknown, apex of connective discoid, slightly umbonate, 0.4-0.6 x 0.6-0.9 mm, densely covered with simple to stellate hairs. Carpels (as counted in flower) 150-300, 2.5-3 mm long, totally covered with stellate hairs to 0.2 mm in diam. Fruit green, later turning red in vivo, glaucous, globose to subglobose, 4-6 cm in diam., basal collar composed of 14-18 connate, sterile carpels, 10-23 mm in diam., protruding below the fruit, fertile carpels (50-) 85-150, obovoid, 10-25 mm long, 5-15 mm in diam., free, areoles broadly ovoid to broadly pyramidal, 5-11 mm high, obtuse, apiculate (apicule to 0.5 mm long or absent), rather densely covered with stellate hairs ca. 0.1 mm in diam., glabrous with age. Seeds ellipsoid to narrowly obovoid, 10-18 mm long, 5-10 mm in diam., obtuse, pale brown to orange-brown.

  • Discussion

    Fruits are aromatic. The sweet pulp around the seeds is occasionally eaten by the Indians. (NB “fruits green, said by the Cuna Indians to be edible, said by the Chocó Indians not to be edible or eaten” (Duke 8440)) The wood is very hard, used for axe handles, also used for fences (Curran 350).

    Duguetia vallicola is distinguished by slightly falcate leaves the lower side of which is covered with stellate hairs, in combination with a red fruit composed of up to 150 carpels.

    It is closely related to D. riberensis, as was recently confirmed by a more detailed study carried out in Utrecht under the supervision of P. J. M. Maas (E. J. M. C. Boon, unpublished report, 1994), and also by UPGMA analysis (Fig. 37, 8th cluster). Both species have in common the type of indument, the slightly falcate leaves, and the flower structure. The two differ very much in the fruit: glaucous, and becoming glabrous in D. vallicola, vs. without glaucous bloom, and permanently hairy in D. riberensis. Moreover, the areoles in D. vallicola are higher (5-11 mm, vs. 2-4 mm), and of different shape.

  • Common Names

    Yaya, Yaya pino, guanábana, Torete de monte, Yaya, Yaya laguna, Chirimoyo

  • Distribution

    The Panamanian states of Darién and Panama, the Colombian states of Bolívar, Chocó, and Santander, and in the Venezuelan states of Amazonas and Zulia. In non-inundated forest and in savanna. At elevations up to 100 m. Flowering in April, May, and September, fruiting from May to July, in September, and in November.

    Panama Central America| Darién Panamá Central America| Panamá Panama Central America| Colombia South America| Bolívar Colombia South America| Chocó Colombia South America| Santander Colombia South America| Venezuela South America| Amazonas Venezuela South America| Zulia Venezuela South America|