The recently published new taxa and new records of Gesneriaceae from China before 31 December 2023 (11)

Jun Hu Jun-Yi Zhang Hai He Ding-Xiang Yu Hong Jiang

Qing Liu | Fang Wen

Oreocharis oriolus, a new species of Gesneriaceae in a

sclerophyllous oak community from Yunnan, Southwest China

Ecology and Evolution. 2023, 13: e10174.

Abstract

Oreocharis oriolus, a new species of Gesneriaceae in a sclerophyllous oak community from Yunnan, Southwest China, is described and illustrated. Morphologically, it resembles both O. forrestii and O. georgei, while it is distinct in combined characters of wrinkled leaves, peduncle and pedicel covered with whitish and egladular villous hairs, bract lanceolate and nearly glabrescent adaxially, and staminode absent. Molecular phylogenetic analysis based on nuclear ribosomal internal transcribed spacer (nrITS) and chloroplast DNA fragment (trnL-F) of 61 congeneric species also supported O. oriolus as a new species while it was nested with O. delavayi. It was currently assessed as ‘Critically Endangered’ (CR) regarding to its small-sized

population and narrow distribution following the IUCN categories and criteria.

 Original article link：https://doi.org/10.1002/ece3.10174

FIGURE 1 Bayesian phylogenetic tree inferred from combined nrITS and trnL-F sequences data. Values above branches are maximum likelihood bootstrap percentages (>50)\Bayesian posterior probabilities (>.5), “*” denotes branches with <50% bootstrap support. The new species is shown in red. Species names of Oreocharis follow Möller et al. (2011a, 2011b).

FIGURE 2 Oreocharis oriolus. (a) Habitat; (b) A subpopulation; (c) Cyme and indumentum of peduncle; (d) Infructescence of previous year; (e and f) Habit; (g-1) Adaxial leaf surface; (g-2) Abaxial leaf surface; (h-1) Side view of cyme; (h-2) Front view of cyme; (i-1) Side view of flower; (i-2, i-3, i-4) Flowers at different opening stages; (j-1) Side view of ovary; (j-2) Front view of ovary; (k) Opened corolla,showing stamens and staminodes; (l-1) Front view of corolla; (l-2) Side view of corolla; (m-1) Abaxial surface of calyx; (m-2) Inner surface of calyx

FIGURE 3 Oreocharis oriolus. (a) Habit; (b) Abaxial leaf; (c) Cyme; (d) Calyx; (e) Fertile stamens (left four) and a staminode (right). Drawn by Yu-Jie Chen.