We provide a nomenclatural treatment of accepted names published in the genus Mollia Mart. and their synonyms, including the citation of protologues and types for 31 infrageneric names. The synonymies follow the most recent taxonomic revision of the genus, with some modifications. In total, we treat 17 species of Mollia, one of which, M. lepidota, is divided into four subspecies. Lectotypes are designated

We present a checklist for Henriettea (Melastomatacae, Henrietteeae) in the Antilles. The genus is represented by 23 species, 19 of which are endemic. Additionally, a total of 19 lectotypes for names associated with these species are designated: Calycogonium squamulosum f. squamulosum, C. squamulosum F. grandifolia, C. squamulosum var. amplifolium, Henriettea parviflora, Henriettella barkeri, H. ciliata

The Coastal Plain Floristic Province is a biogeographic hotspot that contains a diverse flora, but botanists are still striving to learn the extent of its species diversity. Nine species of Paronychia (Caryophyllaceae) occur in the Coastal Plain Floristic Province, and an additional four species are distributed in the adjacent Appalachian Mountains. A recent study of ecological speciation in Paronychia

Echeveria islasiae is proposed as new species, a plant collected near the town of Olinalá in the state of Guerrero, Mexico. Its morphological characteristics such as few-flowered cincinnate inflorescences and an elongate corolla with greenish apex relate it with the taxa of ser. Longistylae. Conversely, it differs from the other taxa of the series by having narrower, dark green, oblanceolate-spatulate

The circumscription of species and subsequent classification into genera were reassessed for Ophiobotrys, Osmelia, and Pseudosmelia, three closely related genera of Old World Samydaceae (Salicaceae sensu lato). Phylogenetic analyses of plastid DNA data were performed and affirm the placement of these genera in Samydaceae, and a phylogenetic analysis of morphological data indicates that Pseudosmelia

Se describe e ilustra una nueva variedad del género Orphanodendron (Leguminosae: Papilionoideae), Orphanodendron grandiflorum var. digitata. La nueva variedad se reconoce por la forma y el tipo de sus yemas latentes y, mayor número de estambres. El nuevo taxón propuesto fue colectado en un bosque andino en la cordillera Oriental de Colombia, municipio de Otanche, departamento de Boyacá.

Peltophorum (Caesalpinioideae: Fabaceae) is a well-known extant legume genus characterized by marginally bi-winged fruits. No reliable fossils of Peltophorum have been reported previously. Here, we report for the first time well-substantiated fossil fruits of Peltophorum exhibiting an oblong to narrowly elliptic fruit body with longitudinal wings along both margins. The fossils originated from upper

Conchocarpus kallunkiae (Rutaceae: Galipeinae), a new species from the Magdalena River Valley region in Colombia, is described and illustrated and comments about its geographical distribution, phenology, conservation status, and taxonomic affinities are provided. The new species differs from any other species in the genus by the combination of remarkably bullate blades, basally appendaged anthers,

A new species, Impatiens raktakesara, belonging to section Scorpioidae is described and illustrated from Idukki district of Kerala in the southern Western Ghats. It is morphologically similar to Impatiens goughii, but can easily be distinguished in having uniseriate moniliform trichomes on leaf upper surface, unlobed lower petals and 1–3(-5)-seeded capsules. Impatiens raktakesara is assessed here as

A species of Myrcia (Myrtaceae) bearing distinctive star-shaped fruits has been observed in the Vale Natural Reserve in Linhares, Espírito Santo, Brazil, for the last 20 years, and was informally named star myrtle (Portuguese: araçá-estrela). During ongoing taxonomic studies of Myrcia from this region it became apparent that the star myrtle was a new species to science, here described as Myrcia stellaris

During the preparation of the treatment of the genus Lippia for the Flora do Brasil 2020 online project, dozens of names were found in need of typification or typification clarifications. In this context, lectotypes are designated for 18 names (L. asperrima, L. cordata, L. dracocephaloides, L. elliptica, L. florida, L. glabrescens, L. hederifolia, L. herbacea, L. hermannioides, L. hirta, L. iodophylla

Se describe e ilustra a Lonchocarpus chavelasii, una especie nueva del estado de Guerrero, México. Lonchocarpus chavelasii guarda similitud con L. eriophyllus, sin embargo se distingue de esta última por presentar hojas con menor número de folíolos (3–5 vs. 13–21), folíolos con venación craspedódroma (vs. camptódroma), corola translúcido linear-punteada (vs. epunteada), pedúnculos florales más largos

Three new species of Trattinnickia are described and illustrated, and a key to the 19 recognized species is provided. Trattinnickia zickeliana resembles T. peruviana, and T. dalyana resembles T. burserifolia, while T. nebulae is remarkable for its short stature and montane habitat.

Ferns and lycophytes are an excellent group for conservation and species distribution studies because they are closely related to environmental changes. In this study, we analyzed collection gaps, sampling biases, richness distribution, and the species conservation effectiveness of protected areas in the Lower Tapajós River Basin using ferns and lycophytes as a model group. We built a database based

Lippia includes 150–200 species mainly distributed in South America. Based on field surveys, analysis of nomenclatural types and other specimens, as well as the relevant literature, we found an interesting new species belonging to L. sect. Dioicolippia, which is here described and illustrated. Lippia crucifera inhabits Campos de Areia (sandy grasslands) of the Pampa biome in southwestern Rio Grande

:Bernardia erecta, B. monoica, and B. stylosa (Euphorbiaceae-Acalyphoideae), from Bahia Coastal Forests in Brazil, are described, illustrated, and compared to morphologically similar taxa. We also provide information about the distribution, habitat, and conservation status of the new species.

Resumen Se realiza la revisión taxonómica del género Portulaca (Portulacaceae) para Cuba. Se reconocen 14 especies: 11 nativas (una endémica), una naturalizada y dos cultivadas. Se propone Portulaca avinoamii García-Beltrán como nombre nuevo para P. tuberculata (Danin & H.G. Baker) Danin (non P. tuberculata León). Se designan los lectotipos de 21 nombres de Portulaca: P. biloba, P. brevifolia, P. cubensis

Until recently, Schefflera was the largest genus in Araliaceae (with more than 600 described species), but with a growing understanding of its polyphyly, the circumscription of Schefflera had to be limited to just eight closely related species from the Pacific Islands. To restore monophyly, it was necessary to transfer the remaining, unrelated species to other genera. In most cases, these transfers

Three new species of Oleandra from the Neotropics are described, illustrated, and compared to similar species. Oleandra amazonica and O. steyermarkii are endemic to the Guiana Shield, whereas O. hovenkampii has an apparent disjunct distribution, being known from Peru and Costa Rica. We also re-define the informal, morphological groups of Neotropical Oleandra: 1. Species with slender, creeping stems

In the genus Sciodaphyllum (Araliaceae), some species have paniculate inflorescences with globose capitula as their terminal units, in which numerous tightly packed flowers develop into fruits that are appressed to each other. This informal assemblage, referred to as the “globose-capitate group,” currently includes 20 described species. Three new species with this distinctive morphology are described

Recent collections in the Sierra Martín García represent a new species of the genus Picrasma, which because of its small leaves in comparison with closely related species, we describe as P. nanophylla. We document its phylogenetic position within the clade, compare it with close relatives and phenetically similar species, provide an illustration of the species and provide an identification key for

Resumen: Se describe e ilustra Allomaieta pterocalycina, una nueva especie para el departamento de Antioquia, Colombia. Difiere de las demás especies descritas para el género por su hipanto y caliptra con proyecciones conspicuas a manera de alas. El nuevo taxón crece en ambientes umbrófilos al interior de remanentes de bosque en buen estado de conservación, entre 400 a 700 m s.n.m. Debido a su distribución

A new species from central Amazonia, Chromolucuma brevipedicellata (Sapotaceae, Chrysophylloideae) is described and illustrated. It occurs in terra firme (non-flooded) forests near Manaus, Brazil. We compare C. brevipedicellata to similar species in terms of diagnostic morphology, as well as near-infrared spectral differences of the leaves, and provide, an identification key for its distinction. Although

Recent field exploration in connection with a taxonomic revision of Sonerila (Melastomataceae, tribe Sonerileae) in India resulted in the discovery of an undescribed species from the southern Western Ghats. Here we describe this new species as Sonerila stolonifera and compare it to Sonerila vatphouensis Munzinger & C.V.Martin and S. janakiana Ratheesh, Sunil & Sivad., which are similar in their foliar

Bonamia eustachioi is here described as a new species of Convolvulaceae from the states of Bahia and Minas Gerais, Brazil, where it grows in Caatinga and Cerrado vegetation. It is described, illustrated, and compared to similar species.

The life and work of geologist and botanist Alfred Prentice Young (1841–1919) are outlined. His collection of plants from Western India, Kashmir and Pakistan (1878–1881) was given to the Natural History Museum, London (BM) in 1884. Details of his botanical collections and new taxa based on them are provided, and a new species, Commelina youngii, is described.

While studying the collections of Cryptangieae (Cyperaceae) at the New York Botanical Garden, we found specimens of two undescribed species, which based on their achene morphology are assigned to the genus Cephalocarpus. We name and describe these two new species, C. insolitus and C. neblinensis, from the Guayana Highland of northern South America. Both species have three fimbriate hipoginium scales

Pleopeltis guttisquamata, a new epiphyte fern from the inselbergs of Espírito Santo, is described and illustrated. This new species belongs to the Pleopeltis squamata complex. Morphologically and geographically, P. guttisquamata most resembles P. hirsutissima s. str. and P. monoides, to which it is compared. We also present a key to all species of Pleopeltis occurring in the state of Espírito Santo

A new combination in Rutaceae is published: Megastigma conzattii, which was erroneously described as an Amyris, A. conzattii. The species is described, illustrated, and compared with M. skinnerii and M. chiangii, both species with similar morphological characteristics. A comparative table and an identification key of these species are included.

A new species of Camellia is described from material collected from Hon Giao Mountain, Bidoup-Nui Ba National Park, southern Vietnam. The analysis and figures demonstrate how Camellia flosculora differs from other known Camellia species and illustrate the new species, which is characterized by relatively small leaf blades, short pedicels, and very small flowers with short stamens and styles. The morphology

Amazonia occupies approximately 60% of Brazil and hosts one-third of the country’s orchids. Pará state contains a significant portion of the Brazilian Amazon, the orchidological flora of which has become better documented in the last few decades. The municipality of Abaetetuba comprises several islands predominated by floodplain forest of ombrophilous broadleaf species interspersed with palm trees

Two species of the neotropical genus Microlicia are proposed as new (M. barretoana and M. longifolia), both of which occur only in the state of Minas Gerais, Brazil. Additionally, Trembleya botaensis and T. purpurascens are recognized as new heterotypic synonyms under M. curralensis, for which an updated morphological description is presented. Comments on diagnostic features, distribution, habitat

A new species from the northern foothills of the central Andes of Colombia belonging to the previously monotypic genus Lubaria (Sapindales: Rutaceae) is here described and illustrated; comments about its distribution, habitat and conservation status are made. Named L. heterophylla , it differs from L. aroensis by its trifoliolate leaves (one of the two at a node is smaller and frequently bifoliolate

Merostachys is one of the more species-rich genera of Neotropical woody bamboos. It includes about 55 described species, of which 44 are found in the Brazilian Atlantic Forest, the center of diversity and endemism of the genus. Based on fieldwork in Minas Gerais and Espírito Santo states and morphological analyses in herbaria, we recognize two new species, Merostachys judziewiczii and M. lage-vianae

Zanthoxylum magnifructum is a recently described species based on only a fruiting specimen collected in tropical dry forests in the department of Huila in Colombia. An emended description and illustration are presented, including flowers and seeds, which were previously unknown. Comments on its geographical distribution, conservation status, taxonomic affinities, and sexual dimorphism are made. A key

The Bromeliaceae are a largely Neotropical family originating in open, dry environments. Vriesea Lindl. , the third largest genus of the family, is traditionally divided between two sections. About 90% of the species of the genus occur in Brazil, where the centre of diversity is the Atlantic Rainforest. Leaf morphoanatomical studies conducted on bromeliad species have confirmed the importance of structural

Se describe e ilustra una nueva especie de Sisyrinchium , endémica del estado de San Luis Potosí, México. Sisyrinchium anarosae se distingue del resto de los taxones mexicanos pertenecientes a la sección Echthronema , por su tallo floral decumbente, ramificado, que en los nudos de la porción basal del eje primario presenta hojas con características similares a las basales, que en contacto con el sustrato

Elaphoglossum is a taxonomically challenging fern genus with about 600 species. The present study concerns a group of five Elaphoglossum species mainly distributed in Mexico, four of which were recovered as monophyletic and are here called the Mexican-petiolatum clade ( E. petiolatum, E. potosianum, E. pringlei, and E. rzedowskii) . The fifth species, E. muelleri , is distributed in Central America

Fernseea is an endemic Atlantic rainforest genus of Bromeliaceae comprising only two species: the endangered Fernseea itatiaiae and the critically endangered Fernseea bocainensis. A taxonomic overview of Fernseea is provided, including complete morphological and leaf anatomy descriptions of its taxa and comments on their taxonomy, biogeography, and conservation status, along with a key to facilitate

Five new species of native North American Taraxacum are described: T. argilliticola, T. cordilleranum, T. lautellum, T. pugioniferum, and T. simplex, all of them from high elevation habitats or high latitudes in western Canada, mostly from British Columbia.

Oxalis cipoensis, nom. nov. (Oxalidaceae) is herein published as a replacement name for the illegitimate name Oxalis calcicola from Brazil, which is a later homonym of Oxalis calcicola from Guatemala.

Three new species of Piper from the Amazon slopes of the Andes in Colombia, Piper pseudopeculiare, P. resinaense, and P. tarquiense are described and illustrated, and morphological comparisons with similar species are discussed.

Protium oxapampae is described and illustrated. The Burseraceae are well-known for being a diverse and often dominant group in Amazonia, but this species exemplifies the under-appreciated and to a large extent undescribed diversity of the family in the Andes.

In order to correct oversights and mistakes made by us while transferring species names to Miconia from other genera of the tribe Miconieae, we propose the following new names and combinations: Miconia durandii, Miconia hermogenesii, Miconia macropetala, Miconia reptans, Miconia retropila, Miconia riedeliana, Miconia trichocalyx, and Miconia verruculosa. We also discuss the nomenclatural status of

At the beginning of the twentieth century, Plagiothecium nemorale s.l. and P. succulentum, both belonging to P. sect. Orthophyllum, were considered to be distributed across almost the entire Northern Hemisphere. However, in the mid-twentieth century these taxa were recircumscribed resulting in their exclusion from the North American bryoflora and restricting their distributions to Asia and Europe,

The florbella group of Miconia is composed of four species from the central Andes that are characterized by hollow stems inhabited by ants, and pleiostemonous flowers with a calyptrate calyx. The four species are M. inusitata, and the newly described here M. cava, M. florbella, and M. valenzuelana. The combination of pleistemonous flowers and calyptrate calyces suggests that these species could be

A new species, Scaevola subalpina, is described and illustrated from the subalpine forest of Mount Mantalingahan Protected Landscape on the island of Palawan in the Philippines. The new species is most similar to Scaevola glabra, a species endemic to the Hawaiian archipelago. Both species grow at high elevations and share solitary or few-flowered inflorescences and yellow corollas but can be differentiated

Two new species of Myrcia sect. Reticulosae, M. carassana and M. revoluta are here described and illustrated. Myrcia carassana was firstly recognized in 1908 by A. F. M. Glaziou but never validly published. This species is similar to M. venosissima but differs by reddish trichomes, inflorescences botryoid or reduced to simple dichasia with longer peduncles, obconic floral buds and calyx lobes internally

In the Brazilian states of Minas Gerais and Espírito Santo, 11 species of Lytoneuron occur, of which one is new to science, L. poseidonii. Besides the 11 species, we also recognize two varieties, of which one is new, L. columbinumvar.caparaoense. We also make three new combinations: L. columbinum,L. microphyllum, and L. ornithopusvar. pygmaeum. Three species are widespread in South America, whereas

Begonia xochiatencana from La Montana Region of the state of Guerrero, Mexico, is described and illustrated as a new species. It clearly belongs to Begonia sect. Gireoudia due to its prostrate, rhizomatous habit with radicant leaves, persistent, keeled stipules, staminate and pistillate flowers with 2 tepals, zygomorphic androecia with stamens whose filaments are arranged free from each other on a

Two new species of Canellaceae from Brazil, Cinnamodendron brasiliense and Cinnamodendron catarinense, are here described. These species are known from the Atlantic Forest in the States of São Paulo (southeastern Brazil) and Santa Catarina (southern Brazil), respectively. Cinnamodendron brasiliense shares morphological similarities with C. occhionianum, but it can be distinguished by being a shrub

Species delimitation in Cactaceae is a challenging task due to the proliferation of species and subspecies names. Echinocereus pulchellus occurs across a wide geographical range in Mexico and presents numerous polymorphisms. The species complex has been considered to comprise five subspecies. In the present work, we analyze morphological variation across the E. pulchellus complex to establish the taxonomic

Five new species of Campyloneurum are described: C. castaneum, C. filiforme, C. jamaicense, C. parvisquama, and C. pichinchae. Each is illustrated and compared to similar species. Distribution maps are given for each. This brings the number of generally accepted species in the genus to about 65.

Loricalepis has been known from only three collections from the upper Rio Negro, in Amazonas, Brazil, and the Río Guainía basin, in Colombia, all belonging to a single species, L. duckei . Its capsular fruits and cochleate, tuberculate seeds suggest its relation to pantropical “core Melastomeae”, but it does not have a particularly close morphological connection with any other genus of the tribe. Here

A new species, Campyloneurum atrosquamatum, is described from the western Amazonian region of Ecuador to Bolivia, and from French Guiana and northeastern Brazilian Amazon. The new species belongs to the Repens Clade of Campyloneurum. Previously, it had been identified as C. coarctatum because of its similar lamina size and shape. An earlier phylogenetic study, however, resolved it as sister to C. fuscosquamatum

Two new species of Raputia (Rutaceae: Galipeinae)—R. lindosana and R. santosii—are described from the Serranía de La Lindosa and Serranía de Chiribiquete, rocky outcrops that are outliers of the Guiana Shield, in the Colombian departments of Guaviare and Caquetá, an area of high species diversity. These two new species brings the total number of Raputia to 14, of which seven are known from Colombia

Protium acrense, P. cerradicola and P. yanachagae are described and illustrated, and a key to the twelve species of Protium sect. Tetragastris is provided. Recent botanical exploration is revealing that the Andes constitute a minor center of the Burseraceae diversity that has yielded at least one new species in this section (described here). The other two, now that they have been distinguished from

Goodyerinae is a cosmopolitan terrestrial subtribe of Orchidaceae; some currently accepted Goodyerinae genera have been suggested to be non-monophyletic, including the type genus for the subtribe, Goodyera. The polyphyly of Goodyera has been supported by multiple molecular studies, with several primarily Indomalayan and Australasian species forming distinct clades more closely related to genera such

We provide a floristic and taxonomic treatment of Ficus sect. Americanae for the Brazilian state of Acre. The section is represented in Acre by 30 species. Ficus dugandii and F. pastasana are reported from Brazil for the first time. We reestablish several species, among them F. regularis (previously considered a synonym of F. trigona) and F. mathewsii and F. subapiculata (both previously considered

Recent molecular phylogenies have demonstrated that Pleurostachys (Cyperaceae) should be recognized as a section within Rhynchospora. Here all accepted species of Pleurostachys are transferred to Rhynchospora sect. Pleurostachys, five new combinations are made, and one new name provided. Rhynchospora austrobahiensis and R. contraligularis are described as new species endemic to the Atlantic forest