Published August 26, 2020 | Version v1
Journal article Open

Two new taxa of Gesneriaceae in the karst regions in North Vietnam

  • 1. Karst Conservation Initiative of Yunnan, Kunming, China|Chinese Academy of Sciences, Kunming, China
  • 2. University of the Chinese Academy of Sciences, Beijing, China|Chinese Academy of Sciences, Kunming, China|Karst Conservation Initiative of Yunnan, Kunming, China
  • 3. Vietnam Union of Science and Technology Associations, Hanoi, Vietnam
  • 4. Yunnan University, Kunming, China|Chinese Academy of Sciences, Kunming, China
  • 5. Chinese Academy of Sciences, Kunming, China|Karst Conservation Initiative of Yunnan, Kunming, China

Description

One new species and one new variety of Gesneriaceae in Vietnam are described, viz. Paraboea sinensis var. glabrissima var. nov. and Primulina xuansonensis sp. nov. These two new taxa grow in limestone regions in North Vietnam. The former new variety differs from Paraboea sinensis (Oliv.) Burtt var. sinensis in its young leaf abaxially, stem and peduncle sparsely and thin pannose, acute top of leaves, pistil glandular-pubescent or pubescent. The latter new species differs in its bracts 1.6–2.5 × 1.3–1.5 cm, corolla 3–3.5 cm long, corolla tube slightly curved near the base and inflated on the adaxial surface near the corolla lobes, and corolla abaxial lip lobes rounded. The two new taxa grow at Xuan Son National Natural Reserve, North Vietnam and remain undisturbed with low risk of extinction.

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