No.22 ZU-LIN NING, DONG-MEI LI, BO PAN & MING KANG

Primulina rubribracteata, a new species of Gesneriaceae from southern Hunan,China

Phytotaxa239(1)：55—64.

ABSTRACT

Primulina rubribracteata Z.L. Ning & M. Kang, a new species of Gesneriaceae from southern Hunan, China, is describedand illustrated. The new species morphologically resembles P. polycephala (Chun) Mich. Möller & A. Weber and P. porphyria X.L. Yu & Ming Li, but it can be easily distinguished by having ovate or broadly ovate leaf blade, purple red bractsand calyx, shorter peduncle and pedicel, thoroughly purple corolla, unbranched cymes with 1–4 flowers, and densely glandular pubescent inside corolla lobes.

FIGURE 1. Primulina rubribracteata(drawn by Yun-Xiao Liu based on cultivated same individual collected in the field). A Habit; B. Bract; C. Calyx and pistil; D. Flower in face view; E. Flower in side view; F. Corolla opened showing stamens and staminodes; G.Stamens; H. Lateral staminodes; I. Stigma.

FIGURE 2. Primulina rubribracteata(A–I). A. Plant in natural enviroment; B. Flower buds and open flowers; C. Abaxially leaf bladecoloration; D. Flower in face view; E. Corolla cut open showing stamens and staminodes; F. Bracts from same individual; G. Calyx lobes; H. Flower in side view; I. Pistil.Primulina polycephala(J–K). J. Inflorescence; K. Habit.

FIGURE 3. Majority rule consensus Bayesian tree based on combined sequence data from internal transcribed spacer (ITS) and threeplastid markers (trnL-trnF, rpl32-trnL, and atpB-rbcL). Numbers above branches are posterior probabilities in percent based on 1000 replicates.