 |
| Primulina inflata Li.H. Yang & M.Z. Xu
in Xu, Kong, Kang & Yang, 2020.
|
Abstract
Based on morphological observations and comparisons, a new species of Primulina (Gesneriaceae), Primulina inflata Li.H. Yang & M.Z. Xu, is described and illustrated. This new species resembles P. xiuningensis in leaf blade shape and indumentum, and differs from the latter by the white corolla with longitudinally purple-red stripes (vs. yellowish without stripes), inflated tubular corolla tube (vs. tubular) and straight filament (vs. geniculate). The descriptions, illustrations and photographs of this new species are provided here.
Keyword: China, Gesneriaceae, Primulina, Primulina inflata, P. xiuningensis, Taxonomy
 |
| Fig. 2. Primulina inflata sp. nov. (A–F) and P. xiuningensis (G–I). A, G. habit, B. flowering plant cultivated in SCBG, C, H. flower in side view, D. cyme, E, I. opened corolla, showing stamens and staminodes, F. pistil and calyx lobes, inset enlarged view of stigma. Scale bars: A, B, G=20 mm, C–F, H, I=10 mm. Arrows indicate the anthers (in E) and stigma (in F). |
 |
| Fig. 1. Primulina inflata sp. nov. A. habit, B1. abaxial leaf surface, B2. adaxial leaf surface, C. pistil, D. flower in front view, E. flower in side view, F. opened corolla, showing stamens and staminodes, G. calyx lobes, H. coherent anthers. Scale bars: A, B=20 mm, C, E, F=10 mm, D=5 mm, G=3 mm, H=2 mm. Drawn by Yun-Xiao Liu based on cultivated individual collected from type locality. |
Primulina inflata Li.H. Yang & M.Z. Xu, sp. nov.
粗筒小花苣苔
Diagnosis: Primulina inflata differs from P. xiuningensis by the white corolla with longitudinally purple-red stripes (vs. yellowish without stripes), inflated corolla tube (vs. tubular) and straight filaments (vs. geniculate).
Distribution and habitat: As most other Primulina species, P. inflata is a species endemic to Xingguo County, Jiangxi Province. Based on our field investigations, this new species is only found at its type locality at Bingxindong scenic area in a Danxia Geopark. Plants of this new species grow on the moist rock surface of a cave entrance. We observed about 200 mature individuals of this new species at the type locality in 2016, but no more than 50 mature individuals in 2018. The serious reduction of the population size mostly resulted from human disturbance. Based on this information, P. inflata is considered as Critically Endangered (CR): B2a,b(iii,v); C2a(i), following the IUCN categories and criteria (IUCN 2016). However, our field investigations on this species are insufficient, and more fieldwork is required to comprehensively understand its geographical distribution.
Etymology: The specific epithet is derived from the inflated corolla tube of this new species.
Mei-Zhen Xu, Hang-Hui Kong, Ming Kang and Li-Hua Yang. 2020. A New Species of Primulina (Gesneriaceae) from Danxia landform in Jiangxi, China. Taiwania. 65(2); 163-166.
