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\begin{document}

\title{Primulina guarouba, a new endemic cave-dwelling species of Gesneriaceae
from northern Guangxi, China}



\author[1]{Xin-Xin Deng}%
\author[2]{Chi Xiong}%
\author[2]{Wei-Chuen Chou}%
\author[3]{Ding-Jiao Lan}%
\author[3]{Zhao-Chu Huang}%
\author[4]{Fang Wen}%
\author[5]{Bi-Dan Lai}%
\affil[1]{Guilin University of Technology}%
\affil[2]{Affiliation not available}%
\affil[3]{Guilin Botanical Garden, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences}%
\affil[4]{Guangxi Institute of Botany}%
\affil[5]{Guangxi Agricultural Vocational University}%


\vspace{-1em}



  
  \date{May 20, 2024}


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\begin{abstract}
Primulina guarouba, a new species from the limestone area of northern
Guangxi, China, is described and illustrated. According to the maximum
likelihood (ML) and Bayesian inference (BI) analysis, it nests in a
strongly supported clade (BP = 99\%) that includes P. cordifolia, P.
repanda and P. huangii. Of these, P. guarouba is similar to the P.
cordifolia in morphology, but it is easily distinguished from the latter
by some of the distinct characters in leaf blade, peduncles, bracts,
calyx, corolla, pistil.%
\end{abstract}%



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