New Species Of Gesneriaceae Research Articles

Petrocodon mirus (Gesneriaceae), a new species from southwest Guangxi, China

Based on morphological observations, molecular phylogenetic analyses and literature consultations, a new species of Gesneriaceae, Petrocodon mirus, is described and illustrated here. This new species exhibits morphological similarity with P. pulchriflorus and P. hechiensis, but is easily distinguished from the latter two by its slightly leathery leaf blade, liner to ligulate‐oblong lip lobes, and shorter tube with constriction at middle. In addition, the new species differs from P. pulchriflorus by its reflexed adaxial lip lobes, and from P. hechiensis by its included stamen and pistil. However, the stigma of P. mirus is much similar to the chiritoid stigma diagnostic for ChiritaBuch.‐Ham. ex Don (now mostly included in Primulina); based on this observation a new hypothesis for the evolution of the chiritoid stigma is proposed.

Petrocosmea arunachalense: a new species of Gesneriaceae from Northeast India

Petrocosmea arunachalense, a new species of Gesneriaceae, is described and illustrated from West Kameng district of Arunachal Pradesh, India. The new species is similar to P. nanchuanensis, and P. parryorum, but differs from the former in having much bigger, lanceolate ovate to lanceolate elliptic leaves, uniformly entire margins, more numerous lateral veins, inflorescence with long peduncles, short pedicels, and more numerous flowers, striated corolla, hairy filaments and number of staminodes, and from the later by more numerous leaves per plant, texture of leaves, uniformly entire margins, more numerous lateral veins, green calyx, corolla colour and striation, and colour of the hairs on the filaments. The new species is assessed as Data Deficient according to the IUCN Red List criteria.

Petrocodonliboensis (Gesneriaceae), a new species from Guizhou, China.

Petrocodonliboensis Sheng H.Tang & Jia W.Yang is a new species of Gesneriaceae from Guizhou, southwestern China. The new taxon has a pale-yellow corolla and is most similar to P.luteoflorus. However, it differs from the latter by having a urceolate (vs. cannulate) corolla tube, an abaxial corolla lip 0.8-1.1 mm (vs. 2-2.2 mm) long, and filaments 1.5-1.7 mm (vs. ca. 7 mm) long that are straight (vs. S-shaped or geniculate near the middle). The new taxon is assessed as "Data Deficient" (DD) according to the IUCN standards.

Staurantherafloribunda, a new species of Gesneriaceae from Yunnan, China.

Staurantherafloribunda F.Su, C.Y.Hao & K.Tan, a new species of Gesneriaceae from Yunnan, China, is described and illustrated here. It is morphologically similar to S.grandifolia Benth. in the shape of corolla, stigma, leaves and the number of stamens. However, it can be readily distinguished from the compared species by its dense cymes, leaf indumentum, lack of a corolla spur, calyx colour and stamen shape. The description of the new species, photographs, detailed descriptions, notes on etymology, distribution and habitat, as well as comparisons with morphologically similar species, are provided.

Primulinajiulianshanensis, a new species of Gesneriaceae from Jiangxi Province, China.

Primulinajiulianshanensis 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).

Oreocharis wuxiensis (Gesneriaceae), a new lithophilous species from Northeast Chongqing, China

A new species of Gesneriaceae, Oreocharis wuxiensis, is described and illustrated from Wuxi County, Chongqing Municipality, China. The new species is morphologically similar to O. giraldii in the leaf blade’s shape and indumentum and the corolla’s shape and color. It can be easily distinguished by the shape of the corolla tube and lobes, the indumentum and pistil length, and the ovary’s size and style. At present, a total of three populations were confirmed in Yintiaoling National Nature Reserve, Wuxi County, with about 500 mature individuals. According to the IUCN Red List Categories and Criteria, it is provisionally assessed as Vulnerable (VU D1).

Primulina malingheensis (Gesneriaceae), a New Species from a Karst Area in Guizhou Province, China

Primulina malingheensis X.X. Bai, F. Wen & Y.L. Zhou, a new species of Gesneriaceae from a karst area in Guizhou Province, China, is described and illustrated. It morphologically resembles P. leei in the shape of leaves and flowers but differs especially in the densely pubescent and sparsely villous leaf indumentum and much larger, ovate bracts.

Aeschynanthussmaragdinus F.Wen & J.Q.Qin (Gesneriaceae), a new species from Yunnan Province, China.

Aeschynanthussmaragdinus F.Wen & J.Q.Qin, a new species of Gesneriaceae from the monsoon rain forest in Mangbang township, Tengchong City, Yunnan Province, China, is described and illustrated here. It morphologically resembles A.chiritoides C.B.Clarke in size, shape and hairs on the leaf blades. But it can easily be distinguished from the latter by the green corolla limb with brownish-red to maroon lower lobes. At the same time, the hairs of the pedicel and calyx lobes, the length of the staminode and the size of the seed grain can also help distinguish both. It is provisionally assessed as Data Deficient (DD), according to the IUCN Red List Categories and Criteria, because field surveys for this new taxon have not been completed.

Oreocharis yangjifengensis (Gesneriaceae), a new species from Yangjifeng National Nature Reserve of Yingtan City, Jiangxi Province, China

Oreocharis yangjifengensis F.Wen & B.Chen, a new species of Gesneriaceae from Yangjifeng National Nature Reserve, Yingtan city, Jiangxi province, East China, is described and illustrated. It can be easily distinguished from other Oreocharis species by having a zygomorphic and urceolate corolla, and peduncle, bracts, pedicel and calyx densely pale brown woolly to pubescent.

Oreocharis repenticaulis (Gesneriaceae), a new species from western Guangxi, China

Oreocharis repenticaulis, a new species of Gesneriaceae from Guangxi, China, is described and illustrated. It is the first described Oreocharis with repent stem. A detailed description, color photographs, distribution and habitat, as well as its morphological relationship with relevant similar species are also provided.

Oreocharisqianyuensis, a new species of Gesneriaceae from Southwest, China based on morphological and molecular evidence.

Oreocharisqianyuensis, a new species of Gesneriaceae from Southwest, China, is described and illustrated based on morphological comparisons and molecular phylogenetic analyses. Phylotranscriptomic analyses of the new species in the context of a comprehensive phylogeny with dense sampling of 88% (111/126) of all species of the genus indicated that the new species was most closely-related to O.fargesii. The new species is morphologically similar to O.fargesii and O.nanchuanica in the shape, color and structure of flowers and the number of stamens, but differs in the leaf blade shape, margin and the indumentum characters of the inflorescence. Its morphological relationship with similar species is discussed, the detailed descriptions, colour photographs, distribution, as well as the IUCN threatened status based on the IUCN Red List Categories and Criteria are also provided.

Hemiboeakaiyangensis, a new species of Gesneriaceae endemic to Guizhou, China.

A new species of Gesneriaceae from Guizhou, China, Hemiboeakaiyangensis sp. nov., is described and illustrated. We investigated its phylogenetic position and relationships with 13 other species of Hemiboea C.B.Clarke, which present large morphological diversity in the genus, based on molecular analyses of the nuclear ribosomal internal transcribed spacer (ITS) and the chloroplast trnL-F intron-spacer sequences. The molecular phylogenetic analyses revealed that the new species is most closely related to H.ovalifolia. A diagnostic table and discussion of morphological characters are provided to differentiate the new species from H.longisepala, H.flaccida and H.ovalifolia.

Raphiocarpussinovietnamicus (Gesneriaceae), a new species from southern China and central Vietnam

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. tamdaoensis, 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 description together with color illustration, information on phenology, distribution, ecology and preliminarily conservation status of the new taxon was also presented.

Pearcea lutea, a new species of Gesneriaceae from southeastern Ecuador

Pearcea lutea, a new species of Gesneriaceae from southeastern Ecuador

Primulinanana (Gesneriaceae), a new species from eastern Guangxi, China.

Primulinanana C.Xiong, W.C.Chou & F.Wen, a new species of Gesneriaceae from limestone areas of Guangxi, China, is described and illustrated here. It morphologically resembles P.yangshuoensis Y.G.Wei & F.Wen in papillose leaf surface, but can be easily distinguished from the latter by noting a combination of characteristics, especially in its leaf blades, leaf blade indumentum characteristic, calyx lobes, corolla and the disc. We found only one population at the type locality, about 200 mature individuals. According to the IUCN Red List Categories and Criteria (Version 3.1), the new species is provisionally assessed as Critically Endangered (CR).

Primulina gracilipes (Gesneriaceae), a new species from southern Hunan, China

Primulina gracilipes, a new species of Gesneriaceae from limestone areas in southern Hunan, China is described and illustrated here. This new species is similar to Primulina hunanensis, but is distinguishable due to its smaller bracts and shorter petiole. Morphological description and illustrations of the new species are provided, as well as diagnostic comparisons and a phylogenetic reconstruction based on nrITS and trnL–F sequence data. According to the IUCN Red List Criteria, Primulina gracilipes is assessed as Critically Endangered (CR B2a).

Oreocharisphuongii (Gesneriaceae), a new species from central Vietnam.

Oreocharisphuongii, a new species of Gesneriaceae from central Vietnam, is described and illustrated here. The new species is most similar to O.longifolia by sharing peduncles up to 22 cm long, bracts 2, zygomorphic, yellow flowers with tubular corolla, stamens 4 with two pairs of coherent anthers and capsules up to 6 cm long. It mainly differs from the latter by the combination of some morphological characters of leaves (shape, base, apex and margin), size of calyx lobes, indumentum of corolla tube and inner surface of three lower corolla lobes. Detailed morphological description together with colour illustration, information on phenology, distribution, ecology, preliminarily conservation status of the new species and comparison with its similar species are also presented.

Oreocharis hainanensis (Gesneriaceae), a new species from karst regions in Hainan Island, South China

Oreocharis hainanensis, a new species of Gesneriaceae is described and illustrated from low-altitudual karst areas in Hainan Island, South China. The new species is easily distinguished from its closely-related O. jasminina by campanulate floral tube, zygomorphic corolla and exserted stamens. It also shows different habitats from the four currently-recognized Oreocharis taxa on the island. Molecular phylogeny analysis based on plastid trnL-trnF and nuclear ITS1/2 sequences supported the delimitation of the new species, which forms a monophyletic clade with all the other Oreocharis taxa from Hainan Island. The roles of habitat and floral isolation in the evolution of the new species and its affinities are discussed. The species was assessed as Vulnerable (VU C1 and D2) according to IUCN Red List Categories and Criteria.

Didymocarpus cordifolius (Gesneriaceae), a new species from southern Yunnan, China

Didymocarpus cordifolius, a new species of Gesneriaceae from southern Yunnan Province, China is described and illustrated. The new species is morphologically similar to D. silvarum and D. margaritae, but can be readily distinguished by its short petioles with both glandular and eglandular hairs, pale purple corolla, hairy anthers, and ovary and style of subequal length.

Drymonia peponifera, a new species of Gesneriaceae from Ecuador with an overview of Drymonia fruit traits

Drymonia peponifera, a new species of Gesneriaceae from Ecuador with an overview of Drymonia fruit traits