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| Napeanthus decurrens J.L. Clark, in Clark, 2026. |
Abstract
Ongoing field expeditions in Ecuador and herbarium research have resulted in the discovery of a new species and the stabilization of two names in Napeanthus (Gesneriaceae). Napeanthus robustus Fritsch and Napeanthus ecuadorensis Fritsch were both described from specimens housed at the Berlin herbarium that were subsequently destroyed; therefore, neotypes are designated to stabilize the application of these names. A third taxon, Napeanthus decurrens J.L.Clark, sp. nov., is described as a narrow endemic from the eastern Andean slopes of the Ecuadorian province of Zamora-Chinchipe.
Key words: Andes, biodiversity, Ecuador, Napeantheae, taxonomy
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| Field images of Napeanthus decurrens J.L. Clark. A. Abaxial leaf surface; B. Habit; C. Calyx; D. Front view of flower; E. Rear view of flower. F. Habit; (A from J.L. Clark et al. 10808; B from J.L. Clark et al. 15074; C–E from J.L. Clark et al. 10808). Photos by J.L. Clark. |
Napeanthus decurrens J.L.Clark, sp. nov.
Diagnosis. Similar to Napeanthus loretensis L.E.Skog in its small (< 9 cm long), decurrent leaves, but N. decurrens is distinguished by entire leaf margins and erect inflorescences (vs. serrate leaf margins and prostrate inflorescences in N. loretensis).
Etymology. The specific epithet decurrens refers to the leaf blades that are decurrent along the petiole, giving the leaves a nearly sessile appearance.
John L. Clark. 2026. Taxonomic notes on Napeanthus (Gesneriaceae) in Ecuador: Neotypification of Two Species and A New Species from the eastern Andean slopes. PhytoKeys. 273: 161-169. DOI: doi.org/10.3897/phytokeys.273.189993 [16 Apr 2026]