2019年度发表的苦苣苔科植物新种、新分类群和分布新记录（30）
The newest publishedtaxa and newest record of Gesneriaceae from China before 31 December 2019 (30)
No.30 苏兰英，盘波，洪欣，赵志国，符龙飞，温放，StephenMaciejewski
Lan-YingSu, Bo Pan, Xin Hong, Zhi-Guo Zhao,Long-Fei Fu, Fang Wen & Stephen Maciejewski
中国江西苦苣苔科植物一新种——江西石山苣苔
Petrocodon jiangxiensis(Gesneriaceae), a New Speciesfrom Jiangxi,China
AnnalesBotanici Fennici 56 : 277-284
摘要
基于形态学、细胞学和分子生物学证据，本文报道和描述了发现于中国江西省分布的苦苣苔科植物一新种：江西石山苣苔PetrocodonjiangxiensisF. Wen, L.F. Fu & L.Y. Su。形态学上，新种最接近于星萼石山苣苔P.asterocalyxF.Wen, Y.G.Wei&R.L.Zhang。两个种都具有腋生聚伞花序，辐射对称的花萼和形状相似的花冠，但是江西石山苣苔很容易从以下方面跟前者区别开来：卵状椭圆形到宽卵形的叶片；苞片3个且其边缘具细齿至锯齿；花萼更小，5–6毫米长，约1毫米宽；花冠更小，长1.7–2.3厘米；花药无毛。江西石山苣苔体细胞染色体数为2n = 36。
Abstract
Based on morphological, cytological and molecular data, anew species of Gesneriaceae, Petrocodon jiangxiensis F. Wen, L.F. Fu & L.Y. Su from Jiangxi Province,China, is described and illustrated. Morphologically, it resembles the most P. asterocalyxF.Wen,Y.G.Wei&R.L.Zhang.Both species have axillary cymes, an actinomorphic calyx and similarly shapedcorolla, but P. jiangxiensiscan be easily distinguished by ovate-elliptic to broadlyovate leaf blades, three bracts with a crenulate to serrate margin, smallercalyx lobes 5–6 × ca.1 mm, smaller corolla 1.7–2.3 cm long, and glabrous anthers. Petrocodon jiangxiensis hasa 2n = 36somatic chromosome number.
原文链接（Original Link）：https://doi.org/10.5735/085.056.0413
图 1.江西石山苣苔Petrocodonjiangxiensis中期体细胞染色体(2n = 36). — A, B和C来自不同细胞. 红色和黑色箭头分别表示重叠/接触的染色体和外围组织.
Fig. 1. Somaticchromosomes at metaphase of Petrocodonjiangxiensis (2n = 36). — A, B and Care fromdifferentcells. Redand black arrows indicate overlapping/touching chromosomes and satellites,respectively.
图 2.系统发育树.
Fig. 2. Strictconsensus tree resulted from a Maximum-parsimony (MP) analysis based oncombined trnL-F and ITS sequences of26 species. Bootstrap values > 50% by MP analysis are shown around thecorresponding nodes. The star indicates the new species.
图3. 江西石山苣苔Petrocodonjiangxiensis. — A和B: 在自然生境下的开花植株. — C: 果实. — D: 苞片. — E: 叶表面. — F: 叶背面. — G:聚伞花序. — H: 雄蕊. — I: 花萼和雌蕊. — J: 退化雄蕊. — K: 花朵侧视图. — L: 花朵正视图.
Fig. 3. Petrocodonjiangxiensis. — A and B: Habit of flowering plant in native habitat. — C: Fruits. — D: Bracts. — E: Adaxial leaf surface. — F: Abaxial leaf surface. — G: Inflorescence. — H: Stamens. — I: Calyx andpistil. — J: Staminode.— K: Flower inlateral view. — L: Flower infront view.
