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.
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,
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.
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.
