Scyphostelma fasciculiflorum (Morillo) Liede, Meve & Y. M. Pineda, 2023

Pineda, Yam M., Keller, Héctor A., Balderrama-Torrico, José A., Meve, Ulrich, Nürk, Nicolai M. & Liede-Schumann, Sigrid, 2023, Phylogenetics in Scyphostelma (Apocynaceae: Orthosiinae) and description of new species, Willdenowia 53, pp. 83-112 : 97

Scyphostelma fasciculiflorum (Morillo) Liede, Meve & Y. M. Pineda , comb. nov.

≡ Cynanchum fasciculiflorum Morillo in Ernstia 2(3–4): 62. 1992.

– Holotype: Ecuador, Azuay, Partidero Llantera-Chiquitad-Saucay, bosque húmedo , 3130 m, 7 Feb 1978, F. I. Ortíz & J. Jaramillo 148 ( AAU!; isotype: QCA7980 !) . – Fig. 11 .

Remarks — The ovate, apically rounded, occasionally shortly mucronate leaves with an abaxially yellowish, adaxially whitish indumentum, the dense, rich inflorescences and the trichomes along the upper margin of the adaxial side of the corolla lobes are reminiscent of Scyphostelma ecuadorense (Schltr.) Liede & Meve. The corona lobe shape, however, clearly differentiates the two species: lanceolate-ligulate with a central dorsal fold near the base and a recurved margin in S. ecuadorense vs corona lobes trapezoidal, shouldered and terminating in a central tooth in S. fasciculiflorum (cf. Fig. 11 ).

This species was not included in the phylogenetic analysis.

Figures

Fig. 11. Scyphostelma fasciculiflorum – A: leaf; B: flower, one corolla lobe removed; C: corona lobe, adaxial view; D: gynostegium; E: pollinarium. – A–E from the isotype, F. I. Ortíz & J. Jaramillo 148 (QCA). – Drawn by U. Meve.