A new combination in Hybanthus (Violaceae) from South America

In a survey of the genusHybanthus in Brazil, it was found thatIonidium nanum A. St.-Hil. should be considered distinct fromHybanthus albus (A. St.-Hil.) Baill., based on characteristics of indument, habit and nectariferous appendages, and also habitat and geographical distribution. A new combination ofI. nanum withinHybanthus is therefore proposed.     

A new species of Hybanthus (Violaceae) from north-eastern Brazil

A new species of Hybanthus (Violaceae) from north-eastern Brazil is described and illustrated. Hybanthus verrucosus Paula-Souza is endemic to 'caatingas' of Bahia and Alagoas states and is very distinct from all other Brazilian species of the genus, for its anterior petal, which is covered with small wart-like outgrowths. Other distinctive characteristics of the new species and its relationship with a closely related species ( H. atropurpureus (A.St.-Hil.) Taub.) are discussed.  © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society , 2003, 141 , 503–506.     

Two new species of Mendoncia (Acanthaceae) from Bahia, Brazil

Two new species, Mendoncia bahiensis and Mendoncia blanchetiana, of the subgenus Bremekampia are described and illustrated. A key to four species represented in Bahia and commentary on their taxonomic affinities are provided.     

A new species of Chamaecrista Moench (Caesalpiniaceae) from interior Bahia,Brazil

Chamaecrista arboae, a species of sect.Absus ser.Absoideae newly discovered on Chapada Diamantina in interior Bahia, Brazil, is described, figured, and discussed.     

A new species of Inga (Fabaceae,Mimosoideae, Ingeae) from Atlantic Forest in Bahia,Brazil

Inga unica Barneby & J. W. Grimes, notable for a syndrome of: a) softly pilose foliage, b) emarginate leafstalks lacking nectaries, c) leaflets 2–3 pairs, of moderate size, d) filiform pliant peduncles, e) globose capitula, f) elongate linear floral bracts persistent after fall of the flowers, g) calyx more than half as long as corolla, and h) thin-textured fruit shattering after falling, is described, figured, and discussed. It appears related toI. (Leptinga) nutans (Vellozo) Martius ex Bentham.     

Two new species of Huberia (Melastomataceae: Merianieae) from Brazil

Two new Brazilian species of the genusHuberia,H. carvalhoi andH. consimilis, are described, discussed, and illustrated.Huberia carvalhoi is endemic to Bahia;H. consimilis has a wider distribution, with disjunct populations in Pernambuco, Bahia, and Rio de Janeiro. A key is provided to the three Bahia taxa with some comments on the taxonomic affinities of the two new species.     

Stylotrichium glomeratum (Asteraceae, Eupatorieae), a new species from Chapada Diamantina, Bahia, Brazil

Stylotrichium glomeratum (Asteraceae, tribe Eupatorieae, subtribe Gyptidinae) is described from Chapada Diamantina (Bahia, Brazil), where the genus is endemic. A key to the five species ofStylotrichium is presented.

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Descreve-seStylotrichium glomeratum (Eupatorieae, Asteraceae), uma nova espécie da Chapada Diamantina (Bahia, Brasil), onde este gênero é endêmico. é apresentada uma chave para as cinco espécies deStylotrichium.

     

A new species of Heteropterys (Malpighiaceae) from the semideciduous forests of Bahia, Brazil

Heteropterys andersonii, related to seriesMetallophyllis Nied., is described as new and illustrated.

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Resumen   Heteropterys andersonii, relacionada a sérieMetallophyllis Nied., é descrita como nova e ilustrada.

     

Viola stoloniflora (Violaceae), a new species from the Ryukyus

Viola stoloniflora Yokota et Higa (Violaceae) is newly described from Okinawa Island, the Ryukyus. This species is characterized by the procumbent stolons, the almost round leaf blades, the densely pilose petioles, the ebarbate white petals with violet veins, and the chromosome number of 2n=22. The present species belongs to Sect.Nomimium, Subsect.Serpentes and is closely related to theV. iwagawai group of Sect.Nomimium, Subsect.Adnatae.     

Discocarpus pedicellatus, a new species of Phyllanthaceae (Euphorbiaceae s.l.) from southern Bahia, Brazil

Discocarpus pedicellatus, a new species from semideciduous forests of southern Bahia, is here described and illustrated. Pistillate flowers with pedicels 8–10 mm long and styles usually connate into a column 2.5–3 mm long are diagnostic for this species.     

Schefflera aurata, a new species of Araliaceae from southern Bahia, Brazil

Schefflera aurata, a new species of Araliaceae endemic to the restinga forests of southern Bahia, Brazil, is described and illustrated. It is probably related toS. morototoni, but can be distinguished by leaflets with strongly coriaceous blades, cuspidate apices, goldensericeous indument of the abaxial surfaces, partial inflorescences with 8–12 subsessile flowers, elongated ovaries, and distinctly larger fruits.     

Ravenelia cenostigmatis, a new rust fungus from Brazil

Ravenelia cenostigmatis is described as a new species of plant rust (Uredinales) onCenostigma gardnerianum (Caesalpiniaceae) from Brazilian Cerrado. Teliospore heads ofR. cenostigmatis exhibit an unusually complex structure with four different kinds of cells: teliospore cells, sterile apical cells (intercalary between pedicel hyphae and teliospores), sterile hygroscopic cysts, and morphologically distinct border cells. The last are flattened, elaborately ornamented and probably sterile cells that are wedged between the teliospores and the cysts.Ravenelia cenostigmatis probably belongs to a natural assemblage of ravenelias that occur on caesalpiniaceous hosts and exhibit similar morphological traits. Part 179 of the series “Studies in Heterobasidiomycetous Fungi” of the Botanical Institute, University of Tübingen     

Three new species of <Emphasis Type="Italic">Davilla</Emphasis> (Dilleniaceae) from Bahia,Brazil

Three new species of Davilla (Davilla sessilifolia, Davilla minutifolia and Davilla aymardii) from Bahia, Brazil, are described and illustrated. Affinities and diagnostic characteristics of each species are discussed. The new species belong to Davilla sect. Homalochlaena.     

Two new taxa of Bauhinia sect. Caulotretus from Bahia,Brazil

One new species and one new variety ofBauhinia subg.Phanera sect.Caulotretus are described. Both taxa are tendrilled lianas with woody fruit and both are apparently endemic to Southern Bahian moist forest.Bauhinia carvalhoi has the smallest entire leaves known in the section.Bauhinia angulosa var.bahiana apparently replaces, in “Mata higrófila sul Bahiana”, the typical variety from southeastern Brazil. A key to the three taxa of this section known from Bahia is provided.     

Neosartorya takakii, a new species from soil in Brazil

Among the isolates from soil of grassland in Roraima State, Brazil, a new species ofNeosartorya, N. takakii is described and illustrated.Neosartorya takakii differs from the other known species of the genus in having lenticular ascospores with two distinct equatorial crests and with roughly circularly arranged projections on the convex walls. A comparative SEM view of ascospores from six relatedNeosartorya species is also provided.     

<Emphasis Type="Italic">Agrianthus carvalhoi</Emphasis> (Compositae: Eupatorieae: Gyptidinae), a new species from Bahia State,Brazil

Summary  A new species of Agrianthus, A. carvalhoi, (Compositae: Eupatorieae: Gyptidinae) is described and illustrated from Bahia State, Brazil, and is compared and contrasted with A. luetzelburgii.     

Curitiba (Myrtaceae): A new genus from the Planalto of southern Brazil

In the course of monographic work in Myrtaceae it has become evident thatEugenia prismatica cannot be accommodated within any existing genus in the family. Therefore, a new genus,Curitiba, is described to contain it and the new combinationCuritiba prismatica is made.Curitiba is diagnosed by a combination of 4-angled hypanthia and fruits, ovules radiating from a central protruding placenta, and seed coats with wavy rows of papillae. A key is provided to distinguishCuritiba from the Caribbean and Mesoamerican genusMosiera, where the species also had been placed before this transfer, and from other 4-merous genera in Brazil of subtribe Myrtinae. In the Atlantic Forest of Brazil where the family Myrtaceae is one of the most species rich and ecologically important plant families, the discovery ofCuritiba reveals a unique evolutionary lineage, highlights the endemism present in the Atlantic Forest, and underscores, the urgent need for conservation of this rapidly disappearing and highly endangered biome.     

Serjania lancistipula (Sapindaceae), a new species from Bahia,Brazil

A new species ofSerjania (S.lancistipula) from Bahia belonging to theS. paradoxa group is described and illustrated. A key to the species in theparadoxa group is provided.     

Croton dissectistipulatus, a new species of Euphorbiaceae from Amazonian Brazil

A new species ofCroton,C. dissectistipulatus, is described from Amazonian Brazil. This species is superficially similar toC. timandroides from northeastern and southeastern Brazil, but differs in having petiolate leaves with glandular margins, persistent stipules, conspicuous racemose inflorescences, staminate flowers having externally glabrous sepals and 3 stamens, and pedicellate pistillate flowers. The systematic position ofC. dissectistipulatus relative to the sections ofCroton is discussed.     

Riodocea (Rubiaceae, Gardenieae), a new genus from the Brazilian Atlantic forest

The genusRiodocea is here described from material collected in the várzea forest of the Rio Doce Valley, northern Espírito Santo.Riodocea is a monotypic genus probably related to the Amazonian endemicKutchubaea. A line drawing shows general morphology and photomicrographs show pollen morphology ofRiodocea pulcherrima. Distribution maps ofRiodocea andKutchubaea are included. The valley of the Rio Doce is here included in the Bahian Hylaea, defined as a subregion of the Brazilian Atlantic forest. The connections between the Amazonian Hylaea and the Bahian Hylaea are discussed.