Drymonia crassolobulata (Gesneriaceae), a new species from the central rainforest of Perú

del P. Rojas Gonzáles R.; Vásquez Martínez R.; Flores Shareba J.L.; Rivera Camaña R. · Darwiniana (2026) · DOI: 10.14522/darwiniana.2026.141.1318

Resumen

Drymonia crassolobulata, a new species discovered during the establishment of a permanent monitoring plot in the “abelino” sector of Yanachaga Chemillén National Park, in the central Peruvian rainforest, is herein described. The species Drymonia coccinea, D. doratostyla, D. erythroloma, D. semicordata and the recently described species Drymonia clavijoiae, D. katzensteiniae, D. rominieckiae and D. silvaniae, among others, together with Drymonia crassolobulata, form a group of species characterized by showy and conspicuously colored bracts (red to scarlet) associated with bright yellow corollas, producing a striking red-yellow color contrast. However, Drymonia crassolobulata is distinguished by its urceolate corolla, externally covered with fine to densely short-tomentulose pubescence, with reddish or yellowish-white trichomes. In addition to the abaxially thickened protuberances distinctly developed on the corolla lobes, particularly on the dorsal and lateral lobes, a character absent in the related species. Its morphological affinities are briefly discussed. A complete description, ecological information, diagnostic characteristics, and data on its geographic distribution are also provided. Finally, images and a comparative table summarizing the principal morphological differences distinguishing it from related species are included. With this discovery, the number of known Gesneriaceae species in Peru increases to 225 species.