New Taxa
The newest published taxa and newest record of Gesneriaceae from China before 31 December 2017 (24)


No.24  JIAN LI, XIN CHEN, SHU LI & LI-JIAO YAN


Primulina wenii (Gesneriaceae), a new species from China  


Bangladesh J. Plant Taxon. 24(2): 173–182.




ABSTRACT

Primulina wenii (Gesneriaceae) is described and illustrated here as a new species. Morphologically, this new species resembles P. juliae (Hance) Mich. Möller & A.Weber, but it is distinct from the latter by some obvious features in leaf blade, bract, indumentum, corolla, filament, stigma and pistil. Nuclear ribosomal internal transcribed spacer (ITS) region and plastid trnL-F intronspacer (trnL-F) DNA sequence data from the new species and its 22 relatives are used to determine the systematic position of the new species within Primulina. Molecular evidence suggests that P. wenii is strongly supported as a sister to a clade in which P. juliae is included. The conservation status of P. wenii is assessed as "Critically Endangered" (CR) according to IUCN Red List categories and criteria.

 


The newest published taxa and newest record of Gesneriaceae from China before 31 December 2017 (24)

Fig. 1.  Primulina wenii sp. nov. A. Habitat; B. Habit in flowering; C. Leaf blade – adaxial surface; D. Leaf blade – abaxial surface; E. Cyme, buds and bracts; F. bracts; G. Cymes and flowers; H. Peduncle and its indumentum; I. Front view of corolla; J. Upward view of corolla; K. Lateral view of corolla; L. Stigma with dissected lobes; M. Curved immature capsules. A and M: collected from type locality, 22 Jul 2013; B–L: photographed in nursery of Gesneriad Conservation Center of China, Guilin, 12 Apr 2014, by F. Wen.





The newest published taxa and newest record of Gesneriaceae from China before 31 December 2017 (24)

Fig. 2.  Primulina juliae. A. Habit; B. Leaf blade – adaxial surface; C. Front view of corolla; D. Lateral view of corolla; E. Cyme, calyx lobes and indumentum; F. Young straight capsules. A– B and E– F: photographed in type location by J. Li; C– D: photographed in nursery of Gesneriad Conservation Center of China by F. Wen.




 

The newest published taxa and newest record of Gesneriaceae from China before 31 December 2017 (24)

Fig. 3.  The strict consensus tree of Primulina taxa based on a maximum parsimony (MP) analysis of combined ITS and trnL-F. Numbers of the branches indicate bootstrap values > 50% by MP analysis. * indicates the new species.