A new name and new combinations in Campomanesia and Pimenta (Myrtaceae)

One new name is proposed and eleven new combinations are made inCampomanesia andPimenta. Lectotypes are selected forC. eugenioides var.desertorum, C. phaea, andP. racemosa var.hispaniolensis, var.ouza, and var.terebinthina.     

Studies in lignicolous ascomycetes: Xylopezia and mycowinteria

A number of ascomycetes formerly named inOdontotrema (Ostropales) and the illegitimateWinteria (Rehm) Sacc. are redisposed inXylopezia andMycowinteria (a new name forWinteria). New combinations are introduced forMycowinteria anodonta (=Winteria lichenoides),Xylopezia hemisphaerica (=Odontotrema hemisphaericum),Xylopezia excellens (=Winteria excellens), andXylopezia inclusa (=Odontotrema subintegrum).Xylopezia biseptata is described as new.Xylopezia andMycowinteria are each isolated taxonomically and their affinities at the family level are obscure.     

A new subspecies and new combinations in Comarostaphylis (Ericaceae)

Comarostaphylis spinulosa subsp.glandulifera is described from the mountains of Oaxaca and Puebla, Mexico. Four new combinations inComarostaphylis are also made:C. arbutoides subsp.costaricensis, C. discolor subsp.rupestris, C. polifolia subsp.minor, andC. spinulosa.Arctostaphylos glabrata, A. rupestris, andA. spinulosa are lectotypified and the status ofC. polifolia is discussed.     

New taxa and nomenclatural changes in arceuthobium (viscaceae)

The following new taxa are recognized inArceuthobium: subgeneraArceuthobium andVaginata; sectionsVaginata, Campylopoda, andMinuta; seriesCampylopoda,Rubra, andStricta; speciesA. apachecum,A. californicum,A. guatemalense,A. hondurense, andA. pini; new formae spécialesA. abietinum f. sp.concoloris,A. abietinum f. sp.magnificae. New combinations:A. abietinum (Engelm.) Hawksworth & Wiens, andA. microcarpum (Engelm.) Hawksworth & Wiens.     

New varietal combinations in Agave vivipara (Agavaceae)

New varietal combinations are made inAgave vivipara forA. deweyana, A. letonae, A. nivea, A. rubescens andA. angustifolia var.sargentii. A. angustifolia var.marginata andA. angustifolia var.variegata are transferred toA. vivipara as cultivars.     

A new genus from Mexico: Dendrosida (Malvaceae)

Dendrosida, here described as new, comprises three taxa:D. batesii Fryxell,D. sharpiana (Miranda) Fryxell ssp.sharpiana, andD. sharpiana ssp.occidentalis Fryxell. The genus is interpreted as a primitive representative of the tribe Malveae, and its relationship to other genera of theAbutilon alliance is discussed. An analysis of mericarp morphology in relation to seed dissemination mechanisms indicates that theAbutilon alliance may be divided into an Abutiloid and a Sidoid group.Dendrosida is included in the latter.     

Three new Brazilian species of chamaecrista moench (Leguminosae: Caesalpinioideae)

Chamaecrista (sect.Apoucouita) aspidiifolia Irwin & Barneby from Bahia,Ch. (sect.Absus) glischrodes Irwin & Barneby from Minas Gerais andCh. (sect.Absus)didyma Irwin & Barneby from Brazilian Amazonia are described, figured, and discussed in terms of affinity. Several incidental new combinations inChamaecrista are proposed.     

Two new Brazilian species of Chamaecrista Moench (Leguminosae: Caesalpinioideae)

Chamaecrista (sect.Apoucouita) onusta Irwin & Barneby from coastal Bahia andCh. (sect.Absus) hatschbachii Irwin & Barneby from north-central Minas Gerais are described, figured and systematically characterized. Four new combinations inChamaecrista incidental to the discussion are proposed.     

New genera and species of ericaceae (Vaccinieae) from Costa Rica and Panama

Two new monotypic genera,Didonica andUtleya, are described, withD. pendula from Panama andU. costaricensis from Costa Rica.Disterigma trimera (Panama),D. utleyorum (Costa Rica, Panama, Colombia, and Ecuador),Lateropora santafeensis (Panama),Lysiclesia panamensis (Panama),Macleania talamancensis (Costa Rica),Themistoclesia costaricensis (Costa Rica) andT. horquetensis (Panama),Vaccinium costaricense andV. orosiense (both from Costa Rica) and V.jefense (Panama) are all described as new. New combinations are provided for the PanamanianVaccinium floccosum (=Symphysia floccosa) and the West IndianVaccinium racemosum (=Symphysia racemosa). Keys are provided for the Central American species ofDisterigma andThemistoclesia, the species ofLateropora andLysiclesia, and the Costa Rican and Panamanian species ofVaccinium. Six new species are illustrated.     

Four new species of Smilax (Smilacaceae) from southeastern Asia

Described as new areSmilax biumbellata of the affinity ofS. nervomarginata,S. siamensis of the affinity of 5.perfoliata, and two others inSmilax sect.Macranthae:S. inversa andS. pachysandroides.Smilax inversa (characterized by strongly deflexed leaves and inflorescences on zigzag stems) andS. pachysandroides (with subsessile leaves on low simple stems) show no close resemblance to any previously known species of the section.     

A new series and three new species of Passiflora subgenus Astrophea from the Guianas

A new series,Passiflora ser.Carneae, and three new species are described inPassiflora subg.Astrophea:P. ascidia from Guyana and Venezuelan Guayana;P. balbis from Guyana, Venzuelan Guayana, and Amazonian Brazil; andP. saulensis from central French Guiana. A key to the 19 Guiana species ofPassiflora subg.Astrophea is provided.     

Studies in Stryphnodendron (Leguminosae: Mimosoideae) including two new taxa

Stryphnodendron campestre Forero andS. guianense (Aubl.) Benth. ssp.glandulosum Forero are described and illustrated, and notes on the nomenclature ofS. adstringens and on the exclusion ofS. colombianum from the genus are included.     

New species of grasses in Arberella,Cryptochloa, and Raddia (Poaceae: Bambusoideae: Olyreae)

Two new species are described inArberella, one from Panama (Arberella lancifolia) and one from Bahia, Brazil (a. bahiensis), the latter representing a considerable extension of the known range of the genus.Cryptochloa decumbens, described from Panama, brings to ten the species recognized in this genus andRaddia angustifolia, from Bahia, increases to five the number of species in that genus. Each new species is fully illustrated and keyed.     

New and noteworthy species in Begonia section Gireoudia (Begoniaceae) from Mexico

Two new species are described inBegonia sectionGireoudia:B. rafael-torresii andB. mariti.Begonia karwinskyana, known previously only from its type, is described more amply and discussed.     

The taxonomic affinities of Haplopappus linearifolius (Asteraceae-Astereae)

Haplopappus linearifolius has been referred by various authors to the monotypic genusStenotopsis, to the genusStenotus, and withH. parrasanus toHaplopappus sect.Stenotopsis. A re-evaluation of the taxonomic affinities ofH. linearifolius based on morphological, chemical, and phenological evidence supports the hypothesis that it andEricameria cooperi are closely related and that these two species stand apart from others inEricameria. Accordingly, a section withinEricameria is established to accommodate them, and two new combinations are made,Ericameria sect.Stenotopsis andE. linearifolia. Also, a new subspecies,E. cooperi subsp.bajacalifornica is proposed.     

New taxa in Pectis (Compositae: Pectidinae) from Mexico and the southwestern United States

Pectis minutiflora,P. papposa var.grandis, andP. purpurea var.sonorae are described as new. A new combination,P. purpurea var.lancifolia also is included. Chromosome counts (n = 12) are reported forP. papposa var.grandis andP. purpurea var.sonorae.     

A revision of the West Indian species of Lepanthes (Orchidaceae). III. Cuba

A study of herbarium material ofLepanthes indicates that there are at least 18 species on Cuba. The history of the collections and publications on the genus from the island is summarized, and a detailed key to the species is given. One new combination is proposed (L. blepharophylla) and the following species are described as new:L. acunae,L. dressleri,L. cubensis,L. grisebachiana,L. obliquiloba, andL. occidentalis, of which three are from western provinces and two have been associated with inappropriate names.L. mandibularis Reichb. f. is tentatively considered a synonym ofL. chrysostigma Lindl. although the type ofL. mandibularis could not be found. The range of variation included under the nameL. fulva Lindl. suggests that more than one species is involved.     

Generic delimitations of Central American Bignoniaceae

Generic delimitations in the Bignoniaceae are discussed, a number of Central American genera are reduced to synonymy, and a new genusPseudocatalpa is proposed. Generic mergers includeLevya withCydista, Saldanhaea withCuspidaria, Doxantha withMacfadyena, Pseudocalymma withPachyptera, andPhaedranthus withDistictis. New combinations necessitated by these mergers include the following:Arrabidaea costaricensis (Kränzl.) Gentry,A. pubescens (L.) Gentry,Cuspidaria floribunda (DC.) Gentry,C. weberbaueri (Spr.) Gentry,Cydista aequinoctialis var.hirtella (Benth.) Gentry,Distictis buccinatoria (DC.) Gentry,Macfadyena unguiscati (L.) Gentry,Melloa quadrivalvis (Jacq.) Gentry,Pachyptera alliacea (Lam.) Gentry,P. hymenaea (DC.) Gentry,P. kerere var.incarnata (Aubl.) Gentry,P. standleyi (Steyerm.) Gentry, andPseudocatalpa caudiculata (Standl.) Gentry. In addition, the fruits of several species are described for the first time, and their taxonomic significance is discussed.