Species of Peperomia (Piperaceae) from the Sana River Valley, Peru Author Pino Infante, Guillermo Eloy https://orcid.org/0000-0002-7175-4219 Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Av. Arenales 1256, Jesus Maria, Lima 15072, Peru & Sociedad Peruana de Cactaceas y Suculentas, Av. 6 de Agosto 1146, Jesus Maria, Lima 15072, Peru guillermo.pino@unmsm.edu.pe Author Samain, Marie-Stephanie https://orcid.org/0000-0002-7530-9024 Instituto de Ecologia, A. C., Centro Regional del Bajio, Red de Diversidad Biologica del Occidente Mexicano, Av. Lazaro Cardenas 253, 61600 Patzcuaro, Michoacan, Mexico Author Alban Castillo, Joaquina Adelaida https://orcid.org/0000-0003-4104-2912 Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Av. Arenales 1256, Jesus Maria, Lima 15072, Peru Author Alomia Collazos, Luis Enrique Aaron https://orcid.org/0000-0003-3587-2055 Sociedad Peruana de Cactaceas y Suculentas, Av. 6 de Agosto 1146, Jesus Maria, Lima 15072, Peru text PhytoKeys 2023 2023-04-19 225 1 40 http://dx.doi.org/10.3897/phytokeys.225.99277 journal article http://dx.doi.org/10.3897/phytokeys.225.99277 1314-2003-225-1 334931832DE7567B9355664883B9D258 1. Peperomia cacaophila Trel. & Yunck., Piperac. N. South Amer. 2(610). 1950. Fig. 3A-F Type . Ecuador , prov. Los Rios , cant. Quevedo, roadside at Quevedo, common at Cacao groves, Haught 2966 ( holotype : US 1707621!, isotype: ILL) . Figure 3. Peperomia cacaophila Trel. & Yunck A young plant hanging from a rock B long, trailing plant with distal inflorescence C plant ex-situ with several branches D detail of the leaves E spadix at the beginning of anthesis F mature spadix. Distribution and habitat. Plants were known only from central Ecuador, prov. Los Rios , Guayas, Esmeralda, and Pichincha, epiphyte on Theobroma or similar trees, in shaded warm forests from 200-1500 m. This is the first report for Peru. Notes. The closest species we could compare to is P. topoensis Yunck., also from Ecuador, which is similar in its epiphytic, pendent, or assurgent habit with small, succulent, alternate ovate leaves, cordulate at the base and 7-plinerved, compared to the obtuse, subtruncate based and noticeable 3-nerved leaves of P. cacaophila . Peperomia nitida Dahlst. from Brazil, Sao Paulo (Campinas), a widely cultivated species, is similar but with larger, light green cordulate-based leaves, only stems slightly reddish. Peperomia portobellensis Beurl. from Panama is also similar in shape but with slightly larger leaves. No material other than the types of these species was available for further comparison. This species belongs to Peperomia subg. Micropiper (Miq.) Miq. ( Frenzke et al. 2015 ). Specimens examined. Peru , dept. Cajamarca , prov. Santa Cruz , dist. Catache : Road to Hacienda Taulis , ca. 60 km east of Cayalti on the Rio Sana . 560 m , [ 06°50'41.5"S , 79°10'14.2"W ], 28 Aug 1964 , P. C. Hutchison 6323 (UC, US, F 1642092, USM 16451 ); Road from El Espinal to La Florida , 550 m , 06°51'23.0"S , 79°09'31.0"W , Jul 26 2020 , G. Pino & L.E. Alomia 3234 (USM); Same road, 527 m , 06°51'16"S , 79°09'44"W , 28 Aug 2022 , G. Pino et al. 3625 (USM 330878); idem, 536 m , 06°51'18.6"S , 79°09'41.6"W , 28 Aug 2022 , G. Pino et al. 3630 (USM 330879) .