The recently published new taxa and new records of Gesneriaceae from China before 31 December 2023 (9)

No. 9 Guo-Liang Xu , Li-Fen Liang , Di-Ya Chen , Zhi-Fang Jing , Xiao-Hai Zuo , Zheng-Yu Zuo , Fang Wen

Primulina jiulianshanensis, a new species of Gesneriaceae from Jiangxi Province, China

PhytoKeys 226: 1–16 (2023)

ABSTRACT

Primulina jiulianshanensis F.Wen & G.L.Xu, a new species of Gesneriaceae from Jiulianshan National Nature Reserve of Jiangxi Province, China, is described and illustrated here. Molecular evidence showed it was sister to P. wenii Jian Li & L.J.Yan, while the morphological observation found clear differences between them, petiole, both sides of leaf blades, adaxial surface of the calyx lobes, corolla inside toward the bottom, bract margins covered glandular-pubescent hairs in P. jiulianshanensis (vs. no glandular-pubescent hairs in P. wenii); lateral bracts 4–9 × ca. 2 mm, the central one 2–5 × 1–1.5 mm, adaxially glabrous but sparsely pubescent at apex (vs. lateral bracts 14–16 × 2.5–3.0 mm, the central one 10–12 × 1.3–1.6 mm, all adaxially pubescent); calyx lobes 8–11 × ca. 2 mm, each side with several brown serrate teeth at apex (vs. 14–15 × ca. 2.5 mm, margin entire); filaments and staminodes sparsely yellow glandular-puberulent (vs. white, glabrous).

Original article link: https://phytokeys.pensoft.net

图1 系统发育树

Figure 2. Primulina jiulianshanensis sp. nov. A habitat B population C plant in blooming D habit E adaxial surface of mature leaf blades and petiole F abaxial surface of mature leaf blade and petiole.

Figure 3. Primulina jiulianshanensis sp. nov. A cyme B adaxial surfaces of bracts C abaxial surfaces of bracts D adaxial surfaces of calyx lobes E abaxial surfaces of calyx lobes F opened corolla G stamens and anthers H one of lateral staminodes I pistil J immature capsules K transverse section of capsule.