Abstract
Here we describe Paraboea dolomitica Z.Y. Li, X.G. Xiang & Z.Y. Guo, a new species of Gesneriaceae from Guizhou, China. Based on recent extensive observations, this new species is morphologically similar to Paraboea filipes (Hance) Burtt, in having obovate leaf blades, 1–4-flowered cymes and purplish corolla, but differs from that species by the combination of denticulate leathery leaves, sparsely brown haired peduncles, two woolly bracts, reniform anthers and two glabrous staminodes. Additionally, molecular data support this new species as a member of a clade that includes P. crassifolia, P. tetrabracteata, P. peltifolia, P. vetutina, P. dushanensis, P. dictyoneura, P xiangguiensis and P. guilinensis, but it is distinct from them in leaf position, inflorescence, penduncle, bract and capsule. The conservation status of this species is considered to be “Vulnerable” (VU) according to the IUCN Red List Categories and Criteria.
Highlights
Paraboea was published by Clarke (1883) as a section of the Didymocarpus Wall. and subsequently treated as a distinct genus by Ridley (1905)
Based on morphological and molecular data, we concluded that it is a significant new species, which we describe here
Maximum Parsimony (MP) and Bayesian Inference (BI) analyses resulted in congruent topologies except for some clades with low supported values (Fig. 1)
Summary
Paraboea was published by Clarke (1883) as a section of the Didymocarpus Wall. and subsequently treated as a distinct genus by Ridley (1905). Keywords Gesneriaceae, limestone flora, new species, Paraboea Paraboea (C.B.Clarke) Ridley contains approximately 142 species and is distributed in southern China, northeastern India, the eastern Himalayas, Burma, Thailand, Cambodia, Laos, Vietnam, Malaysia, Philippines and Indonesia east to Sulawesi, occurring mostly in limestone regions (Xu and Burtt 1991; Xu 1994; Li and Wang 2004; Xu et al 2008; Chen et al 2008; Puglisi et al 2011; Xu et al 2012; Wen et al 2013; Xu et al 2017a; Puglisi and Phutthai 2018).
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