Tanaecium dichotomum (Jacq.) Kaehler & L.G.Lohmann, in press

Frazao, Annelise & Lohmann, Lucia G., 2019, An updated synopsis of Tanaecium (Bignonieae, Bignoniaceae), PhytoKeys 132, pp. 31-52: 38

publication ID

http://dx.doi.org/10.3897/phytokeys.132.37538

persistent identifier

http://treatment.plazi.org/id/75075504-7855-5C97-87C1-636D38655359

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PhytoKeys by Pensoft

scientific name

Tanaecium dichotomum (Jacq.) Kaehler & L.G.Lohmann, in press
status

 

8. Tanaecium dichotomum (Jacq.) Kaehler & L.G.Lohmann, in press   * Fig. 1B View Figure 1

Bignonia dichotoma   Jacq. Enum. Syst. Pl. 25. 1760 [also in Select. stirp. amer. hist. 183, 1763].

Fridericia dichotoma   (Jacq.) L.G. Lohmann, Ann. Missouri Bot. Gard. 99: 436. 2014. Type: Colombia. Magdalena: Cartagena, not located.

Habitat and distribution.

Tanaecium dichotomum   is commonly found in dry to humid forests in Argentina (Chaco, Corrientes, Formosa, Jujuy, Misiones, Salta), Belize (Cayo), Bolivia (Beni, Chuquisaca, La Paz, Pando, Santa Cruz, Tarija), Brazil (Acre, Alagoas, Amapá, Amazonas, Bahia, Ceará, Distrito Federal, Goiás, Maranhão, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Pará, Paraíba, Pernambuco, Piauí, Rio de Janeiro, Rio Grande do Sul, Rondônia, Roraima, Santa Catarina, São Paulo, Tocantins), Colombia (Amazonas, Atlántico, Bolívar, César, Chocó, Huila, La Guajira, Magdalena, Meta, Sucre, Tolima), Costa Rica (Guanacaste, Puntarenas), Ecuador (Guayas, Napo), French Guiana, Guyana (Essequibo, Rupununi), Mexico (Chiapas, Colima, Guerrero, Jalisco, Mexico, Oaxaca, Veracruz), Nicaragua (Boaco, Chontales, Granada, Matagalpa, Nueva Segovia, Río San Juan), Panama (Canal Area, Panama, Los Santos), Paraguay (Alto Paraguay, Amambay, Boquerón, Central, Chaco, Concepción, Cordillera, Ñeembucú, Nueva Asuncion, Paraguarí, Presidente Hayes, San Ramon), Peru (Cusco, Loreto, Madre de Dios, Piura, San Martín, Tumbes, Ucayali), and Venezuela (Amazonas, Anzoátegui, Apure, Aragua, Barinas, Bolívar, Carabobo, Cojedes, Distrito Federal, Falcón, Guárico, Lara, Mérida, Miranda, Monagas, Nueva Esparta, Portuguesa, Sucre, Táchira, Trujillo, Yaracuy, Zulia).

Phenology.

Flowering: January to December; fruiting: January to December.

Notes.

This species is widespread through the Neotropics, where it is found in many vegetation types. The species encompasses an enormous degree of morphological variation, representing a species complex. Detailed morphological and molecular studies are necessary to sort out the patterns of variation and identify putative cryptic species.

Tanaecium dichotomum   shares many morphological traits with T. selloi   and T. revillae   (e.g., tuft domatia in the abaxial side of leaflets, bilabiate calyces), and T. pyramidatum   (e.g., thyrsoid inflorescences, pink corollas with white mouths). However, T. dichotomum   differs from these species by the bilabiate and cuspidate calyces, stems with patelliform glandular trichomes between the petioles, and flattened fruits without raised margins or a conspicuous central ridge (Tab. 1).