Piper andersii M.A.Jaram., stat. nov. et, 2023

Jaramillo, M. Alejandra, Rodriguez-Duque, Dayro & Escobar-Alba, Magda, 2023, A new species of Piper (Piperaceae) with peltate leaves from Serrania de las Quinchas, Colombia, PhytoKeys 227, pp. 9-24 : 9

Piper andersii M.A.Jaram., stat. nov. et nom. nov.

Piper mikanianum Steud. var. peltatum Yunck., Bol. Inst. Bot. ( São Paulo) no. 3: 54 (1966). Type: Brazil, Minas Gerais, Caldas, A. F. Regnell II 256*, 9 Jul 1864. Non Piper peltatum L.

Note.

The epithet P. andersii is proposed here to replace Piper mikanianum Steud. var. peltatum Yunck. because Piper peltatum L., (Sp. Pl. 1: 30 1753) is already in use.

Etymology.

The new epithet andersii honors Anders Fredrik Regnell (1807-1884), Swedish physician and botanist who established himself in Minas Gerais (Brazil) and collected the type specimen for this species.

T. Yuncker provided a key to four varieties of Piper mikanianum (Kunth) Steud: P. mikanianum (Kunth) Steud var. mikanianum ; P. mikanianum f. clausum characterized by the closed sinus and overlapping lobes; P. mikanianum var. pilosius C. DC. with leaves and stems strongly pilose with hairs up to 1mm long; and P. mikanianum var. peltatum Yunck with peltate leaves and nerves minutely hirtellous on the abaxial surface ( Yuncker 1972). Yuncker had mentioned that this latter variety might deserve species rank, we propose to make the change suggested and propose the new name P. andersii . Furthermore. P. mikanianum occurs in the states of Minas Gerais, Paraná and Rio Grande do Sul in Brazil and in Argentina, P. andersii , with peltate leaves has only been registered from the state of Minas Gerais.