Three new species of Dalechampia (Euphorbiaceae) from Brazil

Dalechampia fernandesii, from Ceará, belongs to sectionTiliifoliae and is related toD. affinis andD. tiliifolia.Dalechampia armbrusteri, of subsectionDalechampia, from Bahia, is close toD. brownsbergensis of Suriname but has well developed resiniferous bractlets.Dalechampia viridissima, from Bahia and Espírito Santo, is an isolated species with the 3-lobed leaves of species in sectionDalechampia subsectionDalechampia but the reduced indumentum and greenish bracts of species in sectionTriphyllae.     

Miconia atlantica, a new species of Melastomataceae from the eastern mountains of Brazil

A new species of Miconia from the mountains in the Atlantic Forest of eastern Brazil is presented here. Miconia atlantica has been collected in the states of São Paulo and Espírito Santo. It belongs to section Glossocentrum and can be recognized among others species in this section by the leaves with acute bases, an indumentum consisting of stellate trichomes moderately covering the abaxial surface of mature leaves, glomerulate inflorescences, and stamens with unappendaged connectives. Marsupiform domatia were found in São Paulo populations.     

Two new species of <Emphasis Type="Italic">Mezilaurus</Emphasis> (Lauraceae) from Brazil

Ongoing taxonomic work on Mezilaurus has revealed two new species of the genus in Brazil, which are here described and illustrated. The first one, Mezilaurus glabriantha, from the state of Espírito Santo, represents the third endemic species known from the Brazilian Atlantic Forest, and Mezilaurus microphylla occurs in seasonally dry forests from the central Brazilian state of Tocantins. A key to distinguish the extra-Amazonian species of Mezilaurus from Brazil is provided.     

A new species of campomanesia (Myrtaceae) from Brazil

Campomanesia espiritosantensis Landrum is described from the coastal forests of Espírito Santo, Brazil. Its relationship to other species in the genus is discussed.     

New species of Eschweilera (Lecythidaceae) from southern Brazil

Eschweilera tetrapetala Mori andE. alvimii Mori are described and compared withE. compressa (Vellozo) Miers, the only other species of this genus known to have four petals. It is concluded that this small group of species probably evolved from a common ancestor whose range was fragmented by climatic and vegetational changes in the Pleistocene. The distributions ofE. compressa andE. alvimii support the hypothesis that moist forest refuges existed around Rio de Janeiro and southern Bahia/northern Espírito Santo throughout the Pleistocene.     

Two new species of <Emphasis Type="Italic">Goniopteris</Emphasis> (Thelypteridaceae) from Brazil

Two new species of Goniopteris endemic to the state of Espírito Santo (Brazil) are described and illustrated: Goniopteris bradei and G. salinoi. Morphological comparisons with similar species, as well as two identification keys, are presented. One key includes the Brazilian species most similar to G. bradei, and the other includes those Goniopteris species with glandular hairs, including G. salinoi.     

Four new Brazilian species of Lonchocarpus (Leguminosae, Papilionoideae, Millettieae)

Lonchocarpus castaneifolius, L. grazielae, L. longiunguiculatus, and L. montanus from Brazil are described and illustrated based on field and herbarium studies. The first species belongs to Lonchocarpus sect. Punctati and is restricted to northeastern Brazil (Bahia state). The other three are included in sect. Laxiflori. Lonchocarpus grazielae is restricted to the southern coastal region (Santa Catarina state), L. montanus is found in northeastern Brazil (Bahia and Piauí states), the west-central region (Goiás and Tocantins states) and the southeast (Minas Gerais state), and L. longiunguiculatus occurs in northeastern (Bahia state) and southeastern (Minas Gerais state) Brazil.     

A new species of Aspidosperma Mart. (Apocynaceae) from Bahia, Brazil

A new species,Aspidosperma thomasii, collected in the vicinity of Uruçuca is described. It belongs to subgenusAspidosperma sectionAspidosperma and is closely related to theA. parvifolium A. DC. group.     

Three new species of Dalechampia (Euphorbiaceae) from Venezuelan Guayana

Three new species ofDalechampia are described from the Guayanan region of Venezuela.Dalechampia attenuistylus belongs to sectionRhopalostylis and may be most closely related toD. parvibracteata Lanj.Dalechampia megacarpa belongs to sectionDioscoreifoliae, although it is not especially close to any species in the section.Dalechampia papillistigma is also an isolated member of sectionDioscoreifolieae.     

Four new species of Chusquea (Poaceae: Bambusoideae) from Brazil and Ecuador

Four new species ofChusquea—C. bahiana, C. bradei, C. leonardiorum, andC. loxensis—are described and illustrated.Chusquea bahiana andC. bradei, classified within subg.Rettbergia withinChusquea based on their infravaginal, geniculate branching and spatheate, often contracted inflorescences, are endemic to the Atlantic forests of Bahia and Espírito Santo, Brazil, where they are relatively uncommon.Chusquea leonardiorum andC. loxensis are native to the páramos of southern Ecuador;C. leonardiorum is moderately widespread, butC. loxensis is known from only two populations in the Parque Nacional Podocarpus in the province of Loja. These two species are allied withChusquea sect.Chusquea based on their erect to arching or scandent habit, extravaginal branching, and relatively numerous subsidiary branches per node.     

Five new species of calea (Compositae: Heliantheae) from planaltine Brazil

Described from the Planalto of Brazil are:Calea quadrifolia, C. heteropappa, andC. abbreviata of sectionMeyeria,C. intermedia of sectionLemmatium, andC. lutea of sectionCalea. The relationships of each are discussed and a key to the nearest relatives of each is provided. Additionally, all butC. intermedia are illustrated.     

New species and combinations in Thelypteris subg. Goniopteris (Thelypteridaceae)

Three new species ofThelypteris are described and illustrated:T. littoralis andT. paranaensis, endemic to the rainforest of the southern Brazilian Atlantic coast, andT. multigemmifera, endemic to inland gallery forests of the São Paulo state. In addition, four new combinations are made:T. cutiataensis (Brade) Salino,T. iguapensis (C. Chr.) Salino. A new name is proposed forDryopteris lugubris var.quadrangularis:T. montana Salino. The species treated here belong toThelypteris subg.Goniopteris due to the indument of furcate and stellate trichomes.     

A new <Emphasis Type="Italic">Heteropterys</Emphasis> (Malpighiaceae) from semideciduous forest,with notes on wood anatomy

This paper describes and illustrates Heteropterys serrata, a new species endemic to semideciduous forests associated with inselbergs in the state of Espírito Santo, Brazil. Morphological and wood anatomical traits of the new species are compared to those of other species of the Heteropterys Metallophyllis informal group. Based on wood anatomy, H. serrata and H. nitida (the most morphologically similar species) have different axial parenchyma, which is scarce paratracheal in H. nitida (and some other species of the Metallophyllis informal group) and aliform confluent in H. serrata. The most notable morphological and anatomical characters that distinguish the new species are the young hexagonal stems, the unusual widely serrate leaf margins and the aliform confluent axial parenchyma in the wood.     

Two new species of Campomanesia (Myrtaceae) from Espírito Santo and Bahia, Brazil

Campomanesia macrobracteolata andC. anemonea, apparently closely related species from Espírito Santo and Bahia, Brazil, are described as new and are illustrated. Comparisons are made with two other similar species.     

Notes on melastomataceae of the guianas

New species of Melastomataceae from the Guianas are described in the genera Adelobotrys (Adelobotrys ayangannensis) and Clidemia (Clidemia ayangannensis, C. granvillei). Davya crassiramis Naudin is transferred as Meriania crassiramis, Tschudya pulverulenta DC. is given the new name Miconia aliquantula, and Henriettella venosa Gleason is transferred as Clidemia venosa.     

A new species of eleocharis (Cyperaceae) from The West Indies

Eleocharis liogieri, described as new from Santo Domingo and the Lesser Antilles, belongs to sect.Tenuissimae in the Cyperaceae.