Tanaecium parviflorum (Mart. ex DC.) Kaehler & L.G.Lohmann, in press

Frazao, Annelise & Lohmann, Lucia G., 2019, An updated synopsis of Tanaecium (Bignonieae, Bignoniaceae), PhytoKeys 132, pp. 31-52 : 41-42

14. Tanaecium parviflorum (Mart. ex DC.) Kaehler & L.G.Lohmann, in press ** Fig. 1E

Pithecoctenium parviflorum Mart. ex DC. in A.DC. Prodr 9: 197. 1845.

Arrabidaea parviflora (Mart. ex DC.) Bureau & K.Schum. in Fl. Bras. 8(2): 53. 1896.

Fridericia parviflora (Mart. ex DC.) L.G.Lohmann, Ann. Missouri Bot. Gard. 99(3): 441. 2014. Type: Brazil. Bahia, Vale do Rio das Contas, October 1818, C.F.P. von Martius s.n. (lectotype, selected by Lohmann and Taylor 2014, M [M0086353]!).

Habitat and distribution.

Tanaecium parviflorum occurs in caatinga vegetation from eastern Brazil (Bahia, Ceará, Minas Gerais, Paraíba, Pernambuco), and is also found disjunctly in Mato Grosso do Sul, in an area with drained soil.

Phenology.

Flowering: December to February and April; fruiting: February to March and November to December.

Notes.

Tanaecium parviflorum can be distinguished from all other species of the genus by the dentate leaflet margins, calyces aristate (rarely mucronate), and fruit apices caudate. Like T. cyrtanthum and T. tetramerum , this species is also caducous when flowering. However, T. parviflorum differs from these two species by the strongly compressed corollas (Tab. 1 ).

Figures

Figure 1. Morphological diversity of Tanaecium. A-K Flowers A T. bilabiatum B T. dichotomum C T. duckei D T. jaroba E T. parviflorum F T. pyramidatum G T. revillae H T. tetragonolobum I T. tetramerum J T. truncatum K T. xanthophyllum. L-P Fruits L T. bilabiatum M T. cyrtanthum N T. jaroba O T. selloi P T. tetragonolobum. Q-T Seeds Q T. cyrtanthum R T. jaroba S T. revillae T T. selloi. Photos by A. Frazao, except A by B. Gomes B by R. Lopes E, M by C. Siniscalchi G by E. Kataoka H by Stevens I by Parada-Gutierrez J by L. H. M. Fonseca.