Artabotrys chitkokoi K.Z.Hein, Naive & J.Chen from Sagaing Region, Myanmar, is described and illustrated as a species new to science. Description, colour plates, discussion of similar taxa, phenology, distribution and a preliminary conservation status assessment are provided. With this discovery, Myanmar now holds a total of eight Artabotrys species and a key to these species is provided.

Lepidium khalkhalicum, a new species from northwestern Iran, is described. It appears to be a local endemic restricted to open slopes of marl hills in the Khalkhal region (Ardabil province). The novel species is easily distinguished from similar species by a set of both vegetative and generative characters such as less developed indumentum, undivided leaves, much longer style, more divaricate, non‐thickened

Sediment deposition is a common phenomenon in the estuary area. Pot control experiments were conducted to evaluate the interaction effects of sediment burial depth and salt stress on the seed germination and early seedling growth of Suaeda salsa (L.) Pall., an pioneer species of tidal wetland near the Yellow River Delta. The results showed that the percentage of seedling emergence, seedling emergence

A new temperate wood bamboo endemic to Vietnam is described and illustrated as Chimonocalamus bidoupensis N.H.Nghia & V.T.Tran. The new species is similar to C. baviensis in general appearance, but differs by its densely ciliate culms, culm sheaths that are concave at the apex with dense, white hairs on the abaxial surface of the sheath, and perfect florets 7–8 mm long.

Asyneuma cupulare (Campanulaceae) is described as a new species from the southern Western Ghats, India. The new species belongs to the section Eupodanthum and is morphologically close to Asyneuma fulgens in the same section, mainly for the absence of appendages on calyx, erect nature of capsules and calyx lobes after anthesis, presence of 3‐lobed stigma and absence of agglutination in upper part of

In the past two decades, Malpighiaceae has gone through unprecedented changes in classification due to molecular phylogenetic studies. However, some generic adjustments are still needed to make all genera monophyletic. In this study, we propose the new genus Glicophyllum to accommodate the species of Tetrapterys pro parte, a well‐supported lineage recovered by us and by the most recent phylogenetic

Ranunculus aydogdui sp. nov. is described from Tuz Gölü (Salt Lake), Aksaray, Turkey. It is compared to three similar species, R. flammula, R. pulchellus var. pulchellus and R. indivisus and it is found that R. aydogdui is distinguished from them e.g. by having tuber roots. A comprehensive description, ecology, distribution map, detailed photographs, pollen morphology and comparison of the new species

This paper continues the publication of Aspidistra species newly discovered and reported in the flora of Vietnam. It includes illustrated diagnosis of one species new for science, A. angustata Aver., K.S. Nguyen & Tillich and notes on two species, A. chunxiuensis C.R. Lin & Yan Liu, and A. guangxiensis S.C. Tang & Yan Liu newly recorded in the country. Color illustrations, new or updated data on morphology

Hymenidium apiolens and H. pilosum have been recorded to co‐occur in the Himalayas, and it was found difficult to distinguish between them in the field. In this study, we reconstructed the phylogeny and estimated the genetic distance between individuals of H. apiolens, H. pilosum and related species based on nuclear ITS sequences, and rpl16 and rps16 introns, to determine the relationship between H

Petrocosmea chiwui M.Q.Han, H. Jiang & Yan Liu and P. rotundifolia M.Q.Han, H. Jiang & Yan Liu (Gesneriaceae), two new species native to Yunnan, China, are described and illustrated.

Vaccinium napoense (Ericaceae), a new species from Napo County, Guangxi Zhuang Autonomous Region, China is described and illustrated. The new species is assigned to V. sect. Conchophyllum and is closest to V. chengiae, V. saxicola and V. triflorum, but differs in having obovate or oblanceolate leaf blades and urceolate, yellow‐green and pilose corolla.

Monstera alfaroi Croat & M. Cedeño, M. tarrazuensis Croat & M. Cedeño and M. wilsoniensis M. Cedeño & Grayum, all apparently endemic to central and southern Costa Rica at middle elevations on the Pacific slope, are described as new species. Monstera alfaroi is characterized by having warty light brown petioles with undulate sheaths, very large adult leaves and inflorescences with warty peduncles, and

Species that can germinate under low water potential are likely to have greater utility for fodder production and restoration in arid habitats. We investigated seed germination response of four native grass species (Panicum acuminatum, Panicum turgidum, Pennisetum divisum and Polypogon monspeliensis) to five osmotic potentials (0, −0.3, −0.6, −0.9 and −1.2 MPa) using polyethylene glycol‐6000 and two

Rhizoclonium riparium is a cryptogenic macroalga that freely inhabits fresh, sea and brackish waters and is able to compete in a variety of habitats. In the summers of 2018 and 2019, this alga was found to form huge filamentous mats, covering all rocks, down to a depth of 3 m in a harbour in Reyðarfjörður, east Iceland. The species taxonomy was confirmed by molecular data. Here, we report the invasive

Ardisia daklakensis C.M. Hu & Nuraliev sp. nov. (Primulaceae) collected from lower montane forest of Chu Yang Sin National Park in Dak Lak Province, Vietnam, is described and illustrated. It is assigned to the A. subg. Crispardisia Mez, and a key to related species is provided.

Geranium jainii Imtiyaz Hurrah & Vijay Wagh, a new species of Geranium subg. Geranium, is described and illustrated. Morphological comparison of G. jainii with related species (e.g. G. collinum, G. pratense and G. himalayense) and a taxonomic key to distinguish the species are provided. In addition, a detailed description, habitat details, distribution map and conservation status of the new species

The present paper describes two novel species in Lactarius subg. Lactarius collected from Sikkim, a Himalayan state in India. Lactarius brunneoaurantiacus sp. nov., is characterised by brownish to greyish orange basidiomata, watery white unchanging latex, subglobose to ellipsoid basidiospores with somewhat zebroid pattern of ornamentations and ixotrichopalisade nature of pileipellis whereas, L. indoscrobiculatus

Lysionotus coccinus G.W. Hu & Q.F. Wang, a distinct new species from Yingjiang County, southwestern Yunnan Province, China, is described and illustrated. It belongs to L. sect. Lysionotus, but has scarlet flowers while all other known species in this section have white, yellow, purple or pink flowers. Color photographs and a chart are provided for comparing the new species with related species.

A new species of Amorphophallus is described and illustrated here, from the province of Camarines Norte, Luzon island, the Philippines. The new species, A. caudatus, is morphologically close to A. luzoniensis in having a verruculose spadix, a similar spathe shape, and similar size of the ovary. However, the new species is distinct by its larger leaves, a longer peduncle, a longer and wider spathe,

Both a complex topography and climate change have huge impacts on the distribution and genetic structure of extant species. Due to the lack of relevant molecular research, little is definitively known about the phylogeography of herbaceous plants in East Asia. Here we investigate the genetic diversity, population structure and historical population dynamics of Iris dichotoma Pallas, a widespread perennial

This paper includes studies on Heliotropium marifolium complex from India. Five new combinations in Euploca from H. sect. Orthostachys are proposed here. H. marifolium, H. marifolium subsp. wallichii, H. rottleri, H. cornutum and H. madurense are transferred to the genus Euploca. The taxonomic status of the unresolved name H. rottleri is also discussed.

Primulina elegans (Gesneriaceae), a new species from Vietnam is described. This species is similar to P. gemella and P. diffusa in having stolons and papillose‐hispid leaves, but is easily distinguished from them by having 9–15 cymes and corollas with two brown stripes on the adaxial lip and nine purplish lines on the abaxial lip. Furthermore, Primulina elegans differs from P. gemmella by its broadly

Daffodils are a group of special interest for naturalists and botanists due to their beautifulness, diversity and ability to hybridize. In some cases, they have been overnamed leading to confusion. This work mainly concerns two hybrid daffodils found in the Córdoba province, Spain. Narcissus × villanovensis J. López‐Tirado (N. cantabricus DC. × N. fernandesii Pedro) is described using quantitative

Dioecious alpine juniper has been influenced by human impacts, management and climate changes; hence, its present populations are remnant fragments of its former distribution in central Europe. Complex environmental shifts have had fatal consequences for growth, reproduction and health of juniper and hence for its population structure. We asked the questions: 1) what was the population size structure

Ornithogalum malatyanum subsp. aricakense is a new subspecies from Elazığ province in eastern Turkey, differing from the typical subspecies in its flat, broader leaves and longer inflorescence of slightly larger flower. A description, photographs, ecology, distribution and conservation status of the new taxon are presented.

A new species, Gymnemopsis phuwuaensis A. Kidyoo, has been discovered in northeastern Thailand and is here described and illustrated. An identification key to all species of the genus is provided. Photographs and a diagnostic comparison with the morphologically similar species G. calcicola Kerr, are also provided. Gymnemopsis phuwuaensis displays clear differences in form and color of the corolla as

The identity of blackening Russula (R. subg. Compactae) from Indian Himalaya has since long remained a mystery and they are often called after their European look‐alikes. Here, a combined approach including morphology and ITS phylogenetic inference resolved the identification of some of these taxa and revealed the discovery of two novel species. Thus, Russula ashihoi sp. nov., found under Abies in

Micromeria zarkosii (Lamiaceae) is described as a new species belonging to Micromeria Benth. sect. Micromeria. It is restricted to the south Aegean island of Naxos in the central Kiklades, Greece. The taxon is illustrated and its morphological characteristics, habitat and affinities are described.

The new species Echinops sahyadricus is discovered and described from northern Western Ghats, India. It is endemic to the Maharashtra state and probably restricted to few high mountain peaks in Western Maharashtra. The new species is distinguished from the related E. echinatus by adaxially glabrous to sparsely elgandular hairy leaf surfaces, larger non‐cornigerous synflorescences up to 9 cm in diameter

A new species of Hoya from the western part of Peninsular Malaysia is described and illustrated as H. peninsularis. It has long been confused with Hoya finlaysonii because both have leaves with prominent darker venation, but can be distinguished on the corona lobe size and corolla pubescence. In addition, Hoya maingayi, a species earlier considered ‘doubtful and excluded' is typified and illustrated

Primula gracilituba sp. nov. (Primulaceae) collected from montane forest of Bat Xat Nature Reserve in Lao Cai Province of northwestern Vietnam is described and illustrated. The distinguishing characters from the respectively nearest relatives are discussed.

Jasminum chiae (Oleaceae), a new species from tropical limestone mountains in Cangyuan County, Yunnan Province, China is described here. This new species is similar to J. longitubum, but differs in having 5–8 pairs of lateral veins, abaxially conspicuous quaternary veins of leaf blade when dry, subulate‐filiform bracts at base of inflorescence, and larger inflorescences. Besides it also resembles J

Finnish botanical expeditions which were made to Russian Lapland (present‐day Murmansk Region and northern Karelia, Russia) in 1861 and 1863 published travel reports with preliminary information including numerous floristic novelties and phytogeographical observations, but they have been overlooked in present‐day studies. Two reports appeared in print, by Gustav Selin on the expedition made in 1861

Rhododendron delavayi is an alpine evergreen ornamental plant with strong tolerance to drought stress. Brassinosteroids are promising agents for alleviating the negative effects of drought on plants, but the mechanism by which BRs induce plant resistance to drought is not well understood. The present study investigated the effects of exogenous spray of 24‐epibrassionlide (EBR) at different concentrations

Basananthe berberoides, previously known only from a few collections from Yemen and East Africa, is newly reported from Oman. The new distribution record represents the easternmost known for the genus. A map of the distribution of Basananthe berberoides is presented. Habitat information and population details of Basananthe berberoides in Oman and an assessment of its national conservation status are

Argostemma Wall. is a large genus of herbaceous plants in the tribe Argostemmateae (Rubiaceae–Rubioideae), mainly distributed in Southeast Asia and its taxonomy is far from completely known. Eight species of Argostemma were previously reported from Laos, but we here add six more species (Argostemma lamxayanum, A. lobbioides, A. longisepalum, A. paksongense, A. svengsuksae and A. vientianense) which

Marine macrophytes and ‐algae have undergone major changes in abundance and species composition over the last decades, primarily due to eutrophication. However, comparable studies conducted in the mid 20th century are rare, but potentially valuable for enabling insight into changes in the benthic communities from the early onset of the eutrophication of the Baltic Sea. In the present study, the submerged

Meeboldia linearis X. L. Guo, W. Gou&X. J. He (Apiaceae), a new species from Xizang, China, is described and illustrated. The new species resembles M. achilleifolia and M. yunnanensis by having taproot epidermis with annular scars, slender umbels, white petals with inflexed apex, lanceolate calyx teeth and ovoid mericarps with several vittae in each furrow (2–3) and commissure (4). However, M. linearis

Impatiens macrantha S. X. Yu&Ying Qin (Balsaminaceae), a new species from Guangxi, China, is described and illustrated. Phylogenetic analysis based on molecular data shows the new species to belong to I. subg. Clavicarpa and to be closely related to I. tubulosa with which it shares succulent stems and racemose inflorescences, but it can be easily distinguished by having a 4 – or 5 – ridged stem, obovate

Impatiens bakthangensis sp. nov. a new species of Impatiens is described from the Bakthang area of Gangtok, East district of Sikkim (northeast India). With its distinctly bucciniform lower sepals, the new species is similar to I. duclouxii and I. discolor with which it has previously been confused, but differs in several floral characters. Detailed descriptions, distribution and discussion of ecology

Transgene flow from engineered Brassica napus to wild weed relatives could potentially have an environmental effect. To evaluate the introgression of transgenic B. napus into wild Brassica juncea, the hybrid F1 and backcross progenies derived from B. juncea (genome constitution AABB) and transgenic B. napus (AACC) crosses were investigated. C‐genome‐specific simple sequence repeat (SSR) markers corresponding

This paper continues the publication of newly obtained results from a continuing taxonomic investigation of the genus Aspidistra in Laos and Vietnam. It includes illustrated diagnoses of two new species, A. melanaster Aver., K.S. Nguyen & Tillich, A. obliqua K.S. Nguyen & Aver., two new varieties, A. semiaperta Aver. & Tillich var. globulifera Aver., K.S. Nguyen & Tillich, A. lutea Tillich var. luteo‐rubra

Schismatoglottis guabatuensis is described and illustrated as a new species of the Calyptrata clade restricted to the limestone of Batu Caves, Selangor, Malaysia. It is compared with the three other described species of the Calyptrata clade present in Peninsula Malaysia.

The large, tropical island of Borneo has some of the world's richest habitats for plant life, but faces increasing pressures from anthropogenic activities that threaten its biodiversity. With a good portion of the Bornean flora not critically studied, a comprehensive documentation of the numerous endemic taxa expected for the island is not yet complete. It is not known what the relative significance

Astragalus sertavulensis is described as a new species from Karaman in south Anatolia, Turkey. The new species is closely related to A. mesogitanus Boiss. & Balansa and A. lycaonicus Hub.‐Mor. & Reese and is one of only three species in the section that have a hairy corolla. However, while only the standard is hairy in A. mesogitanus, and all the corolla parts are hairy in A. lycaonicus, only the standard

Burmannia decurrens sp. nov., a new mycoheterotrophic species of Burmannia L. (Burmanniaceae) from Yunkaishan Nature Reserve, southwestern Guangdong Province, China, is described and illustrated. This new species is morphologically similar to B. nepalensis and B. oblonga in whole plant whitish, the shape of leaves and bracts, and yellow seeds. However, it is easily distinguished from B. nepalensis

We describe a new species, Peliosanthes cupuliformis, from central Laos with photographic illustrations and relevant taxonomic data. The species appears to be a local endemic confined to a karstic limestone area of Khammouane Province (Boualapha District). It is readily distinguishable from all other congeners by a suit of unique traits such as the dwarf habit, laterally revolute perianth segments

Species of Tillandsia L. are widely distributed in Brazilian ecosystems, and in the state of Bahia they can be found in the Atlantic Forest, Caatinga and Cerrado biomes. Studying the reproductive aspects of these species can support their management and conservation. In particular, stigma morphology is a conserved trait of Bromeliaceae and stigma receptivity can influence the success of pollination

Saussurea xinjiangensis Y. S. Chen, a new species from Xinjiang, China, is described and illustrated. It was first found during a field expedition by the author in 2014. It belongs to S. subgen. Saussurea sect. Laguranthera because its root and caudex split fibrously and it has numerous capitula in a corymbiform synflorescence. The new species is similar to S. mucronulata in its habit, strongly fibrous

The genus Montrichardia are among the most remarkable emergent macrophytes in tropical wetlands. It occurs exclusively in the Neotropics and contains two living species, M. linifera (Arruda) Schott and M. arborescens (L.) Schott. Montrichardia linifera has been reported mainly in the Amazon basin (southern Venezuela to Guyana, Brazil, Ecuador and Peru), whereas M. arborescens occurs in Central America

One of the fundamental questions in invasion biology is why an alien species successfully invades one region but fails to do so in another region. In this regard, the recently emerging molecular ecology tools have made it possible to understand the genetic basis of invasion success and/or failure of alien species in different regions. Here we report the results of studies of the population genetic

The Neotropical genus Palmorchis (Orchidaceae) contains 38 species distributed from Nicaragua to Peru, including northern Brazil. The genus is characterized by whitish or greenish tubular flowers with morphologically similar sepals and petals, a generally trilobed lip basally adnated to the gynostemium, and a gynostemium with a more or less curved apex. Here, a new species of Palmorchis belonging to

In the protologue, Epimedium tianmenshanense (Berberidaceae), a species endemic to western Hunan, China, was described as ‘flower small, 0.2–0.4 cm diam., inner sepals white, petals as long as inner sepals or a little shorter than the latter, spur very short, ca 5.0 mm’. However, both morphological characteristics and molecular evidence suggest that E. tianmenshanense is closely related to E. baojingense

A comprehensive study on nutlet morphology on 46 taxa from the tribe Elsholtzieae was conducted using stereomicroscopy, light microscopy and scanning electron microscopy. The objectives were to evaluate the nutlet characteristics in a systematics context and to provide additional evidence for taxon delimitation. The nutlet shape varied from elliptical, widely elliptical, spheroidal and ovate to pyriform

A new species of Gesneriaceae, Oreocharis argentifolia Lei Cai & Z.L.Dao from Mengzi City, Yunnan Province, China, is described and illustrated. The new species is morphologically most similar to O. panzhouensis Lei Cai, Y.Guo & F.Wen in plant habit, number of stigma lobes and stamens, and the shape of the calyx, but differs in the shape of the leaf blade, indumentum, shape and color of corolla and

The nomenclatures of the taxa of the mangrove Rhizophoraceae of India have been scrutinized and 20 names are lectotypified or neotypified. In addition, the holotypes of some names are located for the first time with clarifications provided. Since natural hybridization is common in Rhizophoraceae, its consequences for the correct application of names is also briefly discussed.

Bredia reniformis, a new species of Melastomataceae from Guangxi, China, is described and illustrated. Bredia reniformis is similar to B. plagiopetala (C. Chen) R. C. Zhou & Ying Liu and B. gracilis (Hand.‐Mazz.) Diels by having axillary inflorescences and flowers with eight isomorphic stamens, but differs from the latter two in having glandular‐puberulous indumentum, reniform calyx lobes and shortly

Impatiens bomiensis, a new species of Balsaminaceae from Bomi County, Xizang, China, is described and illustrated. This new species is similar to Impatiens fragicolor based on morphological characters and molecular data, but differs in the shape of the lower sepal, the dorsal petal and the number of globose glands at petiole base.

The Dichorisandra acaulis group has its circumscription broadened to include two additional species, viz. D. oxypetala and the herein newly described D. forzzae. Dichorisandra oxypetala has previously not been included in this morphological group due to its deviant vegetative morphology. However, its reproductive morphology is congruent with the D. acaulis group and, thus, it is here included as a

Species of Lemnaceae have a high potential for fast biomass production, and this is increasingly gaining attention among researchers in basic plant sciences as well as among entrepreneurs for feed, food and energy production. Hence, the correct identification of the species being used for different duckweed research and applications is becoming indispensable. Here, we present an updated identification