Zi-Bing Xin

Guangxi Institute of Botany, Chinese Academy of Sciences

Elatostema is recognized as a taxonomically difficult group due to the reduced nature of the tiny flowers and inflorescences, also the large number of species (ca 650 to 700). Different opinions on morphological species delimitation have resulted in instability, which is problematic in such a speciose group. In this paper, the taxonomic status of t...

Microchirita minor (Gesneriaceae), a new species from the limestone area in Son La Province, northwest -ern Vietnam, is described here. The new species resembles M. hamosa, but it differs by the combination of corolla tube shape, stamens number and the length of pistil. Detailed morphological description, together with photographic plates, informat...

Raphiocarpus sinovietnamicus, a new species of Gesneriaceae from China and Vietnam, is described and illustrated here. It is morphologically close to R. axillaris and R. tam-daoensis, but can be distinguished from the later two by its broadly tubular corolla tube and red to purple-red, purplish-yellow corolla outside. Detailed morphological descrip...

Pilea danxiaensis L.F.Fu, A.K.Monro & Y.G.Wei, a new species of Urticaceae from Danxia landform, Guangdong, China, is described and photographed. Phylogenetic analyses based on three DNA regions (ITS, trnL-F and rbcL ) suggest that the new species belongs to P. sect. Pilea. Within the section, the new species is morphologically most similar to P. s...

Ensuring that genera are monophyletic should result in a stable classification that better reflects evolutionary history, and which can serve as a framework for answering broader scientific questions. It is also important that species can be assigned to genera easily and unambiguously so as to remove barriers to identification and species discovery...

Actinostephanus, a new genus from southern China, is described and colorfully illustrated with a single species, A. enpingensis. This new genus is morphologically most similar to Boeica and Leptoboea, nevertheless, it can be easily distinguished from the latter two by the following characteristics, such as leaves in whorls of three, all closely clu...

Actinostephanus , a new genus from southern China, is described and colorfully illustrated with a single species, A. enpingensis . This new genus is morphologically most similar to Boeica and Leptoboea , nevertheless, it can be easily distinguished from the latter two by the following characteristics, such as leaves in whorls of three, all closely...

Primulina papillosa Z.B. Xin, W.C. Chou & F. Wen, a new species from limestone areas of Guangxi, China, is described and illustrated here. It morphologically resembles P. linearifolia (W.T. Wang) Yin Z. Wang and P. pseudolinearifolia W.B. Xu & K.F. Chung, but can be easily distinguished by some combined characters, especially its leaf blades densel...

Chayamaritia vietnamensis , a new species from Son La Province, northern Vietnam, is described and illustrated. The phylogenetic study revealed that the new species is most closely related to C. banksiae and C. smitinandii . The morphological comparison suggests it as the third new species of Chayamaritia and distinguished from C. banksiae and C. s...

Elatostema qinzhouense L.F. Fu, A.K. Monro & Y.G. Wei, a new species from Guangxi, China is described and illustrated. Morphologically, E. qinzhouense is most similar to E. hezhouense from which it differs by having smaller size of leaf laminae, fewer and smaller staminate peduncle bracts, longer pistillate peduncle bracts and a larger achene. This...

Petrocodon vietnamensis, a new species from karst cave in north Vietnam is described and illustrated. It is morphologically close to P. bonii, but can be distinguished from the latter by having a green, 3–6 cm long peduncle; green, ca 5 mm long calyx lobes; narrow infundibuliform, a 1.1–1.2 cm long corolla tube; ovate abaxial lip lobes; pink to whi...

A new species, Petrocosmea adenophora Z.J.Huang & Z.B.Xin, from SE Yunnan, China, is described here. It closely resembles P. iodioides Hemsl. in leaf blade shape and corolla type, but differs from the latter by some vegetative and generative characters, e.g. densely golden‐brown glandular puberulent all over the plant. We found only one population...

Achimenes Pers. is well known for its floral diversity and widely used in horticulture, but its phylogenetic position is still poorly understood. And most research about the complete chloroplast genome sequence focused on the Old World species; therefore, we think it is necessary to examine taxa of the New World in more detail. This study determine...

Pseudochirita trifoliata, a new Gesneriaceae species from Pu Luong-Cuc Phuong limestone mountain range in northern Vietnam is described and illustrated here. This new taxon is the second species of the narrowly endemic genus Pseudochirita which is known from limestone areas in southern China and northern Vietnam. It is easily distinguished from P....

Primulina papillosa Z.B. Xin, W.C. Chou & F. Wen, a new species from limestone areas of Guangxi, China, is described and illustrated. It resembles P. linearifolia (W.T. Wang) Yin Z. Wang and P. pseudolinearifolia W.B. Xu & K.F. Chung, but can be easily distinguished by some combined characters, especially its leaf blades densely papillose-hispid. W...

Primulina jiuyishanica K. Liu, D.C. Meng & Z.B. Xin, a new species of Gesneriaceae from Hunan, China, is described and illustrated. The new species is morphologically similar to Primulina fimbrisepala (Hand.-Mazz.) Yin Z. Wang, but differs in its elliptic to broadly elliptic leaf blade with broadly cuneate base, peduncle densely pubescent with spar...

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Primulina qintangensis Z.B.Xin, W.C. Chou & F. Wen, a new species from limestone areas of Guangxi, China is described and illustrated. It resembles P. leiophylla (W.T.Wang) Yin Z.Wang, but can be easily distinguished by a combination of characteristics, especially in its leaves whorled, blade near aequilateral, lateral veins ca. 3; cymes 5–8, once-...

Primulina titan Z.B. Xin, W.C. Chou & F. Wen, a new species from limestone areas in Guangxi, China is described and illustrated with photographs. It resembles P. hunanensis, but can be easily distinguished by a combination of morphological characteristics of leaf blades, petiole, bracts, corolla, filaments, anthers and pistil. We found only one pop...

Primulina hochiensis var. ochroleuca, a new variety from a limestone hill of karst areas, Guangxi, China is described with color photographs. It resembles P. hochiensis var. hochiensis, P. hochiensis var. ovata and P. hochiensis var. rosulata, but can be easily distinguished by a combination of characteristics, especially by its corolla color. We f...

Primulina spiradiclioides Z.B.Xin & F.Wen (Gesneriaceae), a new species from limestone areas in Guangxi, China, is described and illustrated. It resembles P. curvituba, but can be easily distinguished from it by several characters, especially by its straight corolla tube. We found only one population with fewer than 200 mature individuals at the ty...

A new species, Petrocodon ionophyllus F.Wen, S.Li & B.Pan, from the limestone area of Southwestern Guangxi, South China is described here. Based on the population information and threatened situation, the current existence status of this species is assessed as 'Endangered'.

Michaelmoelleria , a new genus from southern Vietnam is described with a single species, M. vietnamensis . The new genus is morphologically most similar to Deinostigma and Tribounia but it differs from the latter two by having four fertile stamens. Nuclear ribosomal internal transcribed spacer (ITS) region and plastid trnL-F intron spacer ( trnL-F...

A new species, Petrocodon chishuiensis Z.B. Xin, F. Wen & S.B. Zhou, from NW Guizhou, China, is described and illustrated here. It shares a rare characteristic with P. hunanensis X. Luo: all have four fertile stamens, a character state distinguishing this clade from the rest of Petrocodon. P. chishuiensis closely resembles P. hunanensis and P. tong...

Five new species of Primulina (Gesneriaceae) are described and illustrated here, namely P.purpureokylin F. Wen, Yi Huang & W. Chuen Chou, P.persica F. Wen, Yi Huang & W. Chuen Chou, P.cerina F. Wen, Yi Huang & W. Chuen Chou, P.niveolanosa F. Wen, S. Li & W. Chuen Chou and P.leiyyi F. Wen, Z.B. Xin & W. Chuen Chou. The characteristic traits of these...

Of the 280 species of Elatostema documented in China, 189 are known only from a single collection. Elatostema setulosum is one such species, having been known only from the type collection for nearly half a century, until recent field investigations in Guangxi. Due to its morphological similarity to E. huanjiangense and E. tetracephalum, we underto...

The complete chloroplast genome of Petrocodon jingxiensis (Yan Liu, H.S. Gao, and W.B. Xu) A. Weber and Mich. Möller was determined in this study. The cp genome was 153,056 bp in length including two inverted repeats (IRs) of 25,405 bp, which were separated by LSC and SSC of 84,154 bp and 18,092 bp, respectively. The GC content was 41.9%. The genom...

We demonstrate the high value of the inflorescence and achene for taxon delimitation in Elatostema. Over half of the descriptions of the ca 280 species described from China, however, lack information on inflorescence and/or achene morphology and this hampers the progress of species discovery and infrageneric classification. In this paper we supplem...

Elatostema (Urticaceae) comprises several hundred herbaceous species distributed in tropical and subtropical Africa, Asia, Australia and Oceania. The greatest species richness occurs on limestone karst in Southeast Asia. Taxonomic revisions of Elatostema are largely out of date and contradict each other with respect to the delimitation of Elatostem...

The complete chloroplast genome of Elatostema dissectum Wedd. was reported in this study. The cp genome was 150,302 bp in length including two inverted repeats (IRs) of 24,565 bp, which were separated by LSC and SSC of 83,998 bp and 17,174 bp, respectively. The GC content was 36.2%. The genome encoded 112 functional genes, including 79 protein-codi...

Primulina zhoui and Primulina huangii, two new species of Gesneriaceae from the limestone area in Guangxi, China are described and illustrated. Primulina zhoui is similar to Primulina multifida B. Pan & K.F. Chung, but differs from the latter in its bracts, calyx lobes, corolla, adaxial lip and disc. Primulina huangii closely resembles Primulina bi...