Marina filiciformis (B.L. Rob. & Greenm.) Urrego, Paola Piñeros, Suárez-Barón, Harold, Pabón-Mora, Natalia & González, Favio, 2023

Marina filiciformis (B.L. Rob. & Greenm.) Piñeros-U. & F. González, comb. nov.

Basionym: Dalea filiciformis B.L.Rob. & Greenm., Proc. Amer. Acad. View in CoL 29: 382. 1894 = Parosela filiciformis (B.L.Rob. & Greenm.) Rose, Contrib. U.S. Nat. Herb. View in CoL 8: 303. 1905.

The transfer of Dalea filiciformis View in CoL to the genus Marina View in CoL (suggested but not formally validated by McMahon and Hufford, 2004) is consistent with the presence of pedicellate flowers and harp-shaped pods with two distinct crescents of blister glands, two traits that are distinctive of Marina ( Barneby 1977) View in CoL . However, other morphological traits commonly found in Dalea View in CoL and likely present in M. filiciformis View in CoL , such as leaflets with minute blister glands, two collateral ovules per ovary, spiral trichomes on the calyx, and a preliminary chromosome counting of 8 (versus leaflets with lineariform glands, one ovule per ovary, calyx trichomes not spirally twisted, and x = 10 in most Marina spp. ) remain to be studied in detail.

Finally, the phylogenetic relationships of the Colombian species of Dalea ( D. coerulea , D. cuatrecasasii , D. foliolosa and D. wilsonii ) remains uncertain. The analysis based on ITS does not recover them as monophyletic (Suppl. Fig. 1 View Figure 1 ), as D. coerulea results closely related to the Peruvian D. myriadenia and D. weberbaueri , whereas D. cuatrecasasii clusters with D. bicolor and D. versicolor , from southern United States and Mexico. Conversely, in the analyses based on matK/trnK (Suppl. Fig. 3 View Figure 3 ) and the combined ITS + matK/trnK ( Fig. 2 View Figure 2 ), they come out as monophyletic, clustered either with D. pulchra , from southern United States, or with D. melantha , from southern North America and Mexico, respectively. More data are required to arrive at a better understanding of the phylogenetic relationship between the North- and Mesoamerican species of Dalea and their South American congeners.