New taxa and combinations in Malvastrum A. Gray (Malvaceae: Malveae)

The genusMalvastrum A. Gray is interpreted to include 22 taxa in 14 species. Seven taxa are here described as new, namely:M. americanum var.stellatum,M. tomentosum subsp.pautense,M. bicuspidatum subsp.campanulatum,M. bicuspidatum subsp.oaxacanum, M. bicuspidatum subsp.tumidum var.tumidum, M. bicuspidatum subsp.tumidum var.glabrum, andM. coromandelianum subsp.fryxellii. In addition, two new combinations are proposed, namely:M. tomentosum andM. coromandelianum subsp.capitato-spicatum.     

New combinations in Hawaiian Chamaesyce (Euphorbiaceae)

Chamaesyce is accepted at the genus level for the Hawaiian taxa. The following new combinations are made:C. celastroides var.laehiensis, C. celastroides var.tomentella, C. rockii var.grandifolia, C. skottsbergii var.vaccinioides, andC. sparsiflora.     

New taxa and combinations in Agastache (Lamiaceae)

Diagnoses are given for the following new taxa:Agastache eplingiana, A. micrantha var.durangensis, A. pallida var.coriacea,A. pallidiflora var.gilensis andA. palmeri var.leonensis. Five new combinations are made.     

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 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.     

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.     

Dragma Hippomanicum III: Novitates Californicae

Two new taxa are described from California:Astragalus (sect.Flexuosi)shevockii from the Sierra Nevada in Tulare County representing a new subsect.Shevockiani; andA. lentiginosus var.piscinensis from an alkaline spring in Mono County. Rediscovery in Nevada of long-lostA. lentiginosus var.sesquimetralis and a new station for the same in Inyo County, California are reported.     

Taxonomic and nomenclatural notes on west Indian hypnaceae

Taxonomic investigations on the West Indian Hypnaceae have resulted in the following new taxa,Taxiphyllum gallorum, Ectropothecium aquaticum, andIrelandia (forIsopterygium robusticaule). Vesicularia in the West Indies is treated as a single species with four varieties,V. vesicularis var.vesicularis, var.rutilans (Brid.) comb. nov., var.portoricensis (Brid.) comb. nov., and var.crassicaulis (Mitt.) comb. nov.Chryso-hypnum is segregated fromMittenothamnium; the combinationC. diminutivum (Hampe) Buck is made.     

Notes on neotropical vaccinieae (Ericaceae). VI. New species from the cordillera vilcabamba and adjacent Eastern Peru

Thibaudia dudleyi var.dudleyi and var.pseudostellata,Demosthenesia cordifolia,D. oppositifolia, andD. vilcabambensis from the Cordillera Vilcabamba, andCavendishia sirensis from the Cerros del Sira in eastern Peru are described and illustrated. The Cordillera Vilcabamba seems to be the center of distribution for the genusDemosthenesia.     

Dragma hippomanicum X: Astragali (Leguminosae) nevadenses novi criticive,singulo peruviano adjecto

One new species,Astragalus tiehmii, and two new varieties,A. convallarius var.margaretae andA. oophorus var.lavinii, are described from Nevada; the relationships of each are discussed and the first is illustrated. Two new combinations,A. eurylobus (Barneby) Barneby andA. serenoi var.shockleyi (M. E. Jones) Barneby are proposed and defended. A new species,A. bryogenes, is described from high Andean Peru (Junín).     

The taxonomy of eriodon and notes on other South American genera of brachytheciaceae with erect capsules

Eriodon is reduced from five species to two.Eriodon radicalis is recognized asEntodontopsis radicalis;Eriodon longipes asPorotrichodendron longipes; andE. brevisetus as synonymous withLindigia debilis. Mandoniella, Stenocarpidiopsis andLepyrodontopsis are discussed and illustrated.Lepyrodontopsis is transferred to the new familyLe pyrodontopsidaceae, near the Meteoriaceae. The following nomenclatural trans fers are proposed for Rozea:R. andrieuxii f.chrysea andR. andrieuxii var.bour gaeana. Sciuroleskea is transferred to an alliance withStereophyllum,Juratzkaea, Entodontopsis, Stenocarpidium andJuratzkaeella. The following transfers are proposed:Sciuroleskea roseorum (Williams asRozea) Buck andJuratzkaea argentinica (Thér. asJ. seminervis var.argentinica) Buck. A key to the erect-capsuled South American genera retained in the Brachytheciaceae is provided.     

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.     

Arceuthobium (Viscaceae) in Mexico and Guatemala: Additions and range extensions

Three new dwarf mistletoes are described:Arceuthobium globosum subsp.grandicaule (Mexico and Guatemala),A. aureum subsp.aureum (Guatemala) andA. aureum subsp.petersonii (Chiapas, Mexico).Arceuthobium guatemalense is recorded for the first time in Mexico. Significant range extensions are recorded forA. abietisreligiosae, A. divaricatum,A. gillii subsp.nigrum, andA. rubrum. New hosts are reported for several taxa. Nineteen members of the genus are presently known from Mexico, and three (possibly four) from Guatemala. Chromosome counts are reported for the first time for 3 taxa.     

Sphaeromeria,a genus closer to Artemisia than to Tanacetum (Asteraceae: Anthemideae)

A new species,Sphaeromeria ruthiae, from Zion National Park, and three new combinations,S. martirensis,S. compacta, andS. potentilloides var.nitrophila, are presented. Morphological and anatomical evidence is used to support the recognition ofSphaeromeria as distinct fromTanacetum.     

New penstemons (scrophulariaceae) from the intermountain region

Four new species,Penstemon janishiae,P. barnebyi,P. mucronatus andP. patricus, and three new varieties,P. dolius var.duchesnensis. P. angustifolius var. vernalensis andP. acuminatus var.latebracteatus, all from the Intermountain Region, are described, illustrated and mapped, and relationships with next of kin are discussed.     

Revision of Anemia subgenus Anemiorrhiza (Schizaeaceae)

This distinctive subgenus, limited to calcareous rocks of the Caribbean basin, is discussed in terms of its taxonomy and relationships. Two new species,A. alternifolia andA. pumilio are described, and two new combinations,A. mexicana var.makrinii andA. coriacea f. nipeensis are made. Drawings of all taxa are provided.     

A synopsis of the South American taxa of Fabronia (Fabroniaceae)

The genusFabronia in South America is found to represent five taxa:F. ciliaris var.ciliaris, F. ciliaris var.wrightii,F. ciliaris var.polycarpa,F. macroblepharis andF. jamesonii. Synonymy, brief discussion, illustrations and a key are provided.Fabronia enervis Herz., hom. illeg., is the basis for the new genusMahua.