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Phytotaxa
Magnolia Press
Phytotaxa

Magnolia Press

1179-3155

Phytotaxa/Journal PhytotaxaSCI
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    Synopsis of Sida (Malvoideae, Malvaceae) in the state of Rio Grande do Sul, Brazil

    Grings, MartinBoldrini, Ilsi Iob
    31页
    查看更多>>摘要：Sida is one of the genera with the highest species richness of Malvaceae and one of the less assessed genera in terms of taxonomy in subfamily Malvoideae. Studies on the taxonomy of the genus in Brazil are scarce. In the state of Rio Grande do Sul Sida is represented by 23 species. This synopsis includes a taxonomic key, illustrations, informations about habitat, maps with geographical distribution, nomenclatural and taxonomic notes, general comments on the biology, ecology and conservation status for all the species. Two names are new synonyms (S. krapovickasii and S. pseudorubifolia), seven names were lectotypified (S. anarthra, S. cerradoensis, S. paradoxa, S. planicaulis, S. riedelii, S. rubifolia, S. viarum), nine species are new records for the state of Rio Grande do Sul (S. cerradoensis, S. confusa, S. cordifolia, S. glaziovii, S. lonchitis, S. nemorensis, S. ramoniana, S. reitzii, S. riedelii). For six species, photos of them in their habitat are presented for the first time, S. farroupilhensis, S. nemorensis, S. paradoxa, S. potentilloides, S. reitzii, and S. rubifolia.
      原文链接:
    • NSTL
    • Magnolia Press

    Coprinopsis alnivora (Psathyrellaceae), a rare species from North America is discovered in Europe

    Bednar, RadovanCervenka, JanArendt, DarinaSzaboova, Dana...
    17页
    查看更多>>摘要：A rare species, Coprinopsis alnivora, was previously known from the type collection in Washington State, USA. Afterward, 11 additional samples were collected from five new host trees at nine localities in Europe (Austria, Croatia, and Slovakia). The species indicated a preference for growth in cavities or wounds of living deciduous trees. Its mycelium and basidiomata were successfully cultivated under laboratory conditions. A detailed morphological description of the basidiomata supplemented with colour photographs and line drawings is provided. Delimitation characters from similar species are discussed. Molecular phylogenetic relationships within the genus Coprinopsis were inferred from ITS rDNA sequences and are presented by a phylogram. Molecular genetic analyses revealed that C. alnivora represents a genetically well-delimited species with six known haplotypes.
      原文链接:
    • NSTL
    • Magnolia Press

    The Cactaceae family in the Santa Maria river basin (Rio Grande do Sul, Brazil)

    Pontes, Rodrigo CorreaDe Souza Robaina, Luis EduardoTrentin, RomarioDe Oliveira, Anabela Silveira...
    14页
    查看更多>>摘要：We present a paper dealing, with the family Cactaceae in the Santa Maria River Basin, which were studied by field surveys (2014-2016) and analysis of relevant literature. For each genus, species richness in the study area, general distribution, detailed, maps concerning the study area, and original pictures are provided. The species were assessed according to the IUCN categories and criteria. A key for the identification of the genera in Santa Maria River Basin was proposed. A description of the main found phytophysiognomies (field, saxicola, forest, and wetland), in which the cacti grow, were also given using Walking Method. Twenty-nine Cactaceae taxa were discovered, belonging to the following genera: Parodia (13 taxa, including a nomenclatural change, i.e. P. ritteriana comb. nov. (equivalent to Notocactus ritterianus), Frailea (7), Gymnocalycium (2), Wigginsia (3), Echinopsis (1), Cereus (1), and Opuntia (1), and Lepismium (1). Five species have a restricted distribution inside area in Santa Maria River Basin. The floristic diversity found in the study area is related to the edaphic and climatic conditions provided by the stony springs in the Santa Maria River Basin, which constitute a favorable microclimate of intense luminosity, heat and humidity for xerophytic species to develop in open areas.
      原文链接:
    • NSTL
    • Magnolia Press

    Gomphosphenia vallei (Bacillariophyta), a new diatom species from a stream in the "Reserve Naturelle Nationale de la Vallee de Chaudefour", Massif Central (France)

    Beauger, AudeAllain, ElisabethVoldoire, OlivierBlavignac, Christelle...
    13页
    查看更多>>摘要：A new Gomphosphenia species (Bacillariophyceae) was found during a diatom survey in the "Reserve Naturelle Nationale de la Vallee de Chaudefour" (RNN VC), in the Massif Central (France). Gomphosphenia vallei sp. nov. is described from stone surfaces in Perouse Stream, Auvergne, France. A detailed description of morphology of G. vallei is presented, based on light and scanning electron microscopy. This new small-sized species is characterized by linear-clavate to elliptical valves. Striae are uniseriate and composed of single slit-like areolae, an axial area linear and narrow and a low number of striae. Gomphosphenia vallei seems to inhabit headwater stream.
      原文链接:
    • NSTL
    • Magnolia Press

    Typification of names in the neotropical genus Luehea (Malvaceae: Grewioideae)

    Gerace, SamueleBovini, Massimo G.Peruzzi, LorenzoBaumgratz, Jose Fernando A....
    9页
    查看更多>>摘要：We present a review of nomenclatural types for the names given to 19 Luehea species and one variety (L. candicans, L. conwentzii, L. densiflora, L. divaricata, L. eichleri, L. ferruginea, L. grandiflora, L. hoehnei, L. laxiflora, L. macrophylla, L. microphylla, L. ochrophylla, L. paniculata, L. parvifolia, L. platypetala, L. rufescens, L. speciosa, L. uniflora, L. uniflora var. gracilis and L. villosa), including one neotypification, nine lectotypifications and seven second-step lectotypifications.
      原文链接:
    • NSTL
    • Magnolia Press

    Untangling nomenclatural issues of some Amazonian trees of Eperua Aubl. (Leguminosae, Detarioideae, Detariae)

    Fortes, Elenice A.Mansano, Vidal F.
    10页
    查看更多>>摘要：Here we present a further nomenclatural revision of the genus Eperua. We correct the author of one nomenclatural combination, update the status of seven names as illegitimate, and make three lectotypifications and one second-step lectotypification. These nomenclatural changes are made in response to the International Code of Nomenclature for algae, fungi, and plants that aims at stability of biological nomenclature. The present results show that even revised names may still need to be checked and updated.
      原文链接:
    • NSTL
    • Magnolia Press

    A new species of Chusquea sect. Serpentes (Poaceae: Bambusoideae: Bambuseae: Chusqueinae) endemic to Oaxaca, Mexico

    Ruiz-Sanchez, EduardoTeresa Mejia-Saules, MaClark, Lynn G.
    8页
    查看更多>>摘要：The most speciose bamboo genus worldwide is Chusquea with 195 described species, 24 of which occur in Mexico. Chusquea is classified into five subgenera, with two of them present in Mexico. Chusquea subg. Chusquea is classified into six sections, of which Chusquea sect. Serpentes has eight described species; one of them is present in Mexico. Forty-three years ago, S.D. Koch and P.A. Fryxell collected a vegetative Chusquea species from Suchixtepec, Oaxaca in the Sierra Madre del Sur with a circular central bud and the infravaginal branching pattern. The same unknown species was collected in 1993 by L.G. Clark, and again by E. Ruiz-Sanchez & L. Cervantes in 2013. Based on these collections and a morphological analysis, here we describe a new Chusquea species, C. kochii, in honor of the late agrostologist S.D. Koch. This species most closely resembles C. glauca. Here we present a geographical distribution map, illustrations, photographs, and a morphological comparison with C. glauca. Chusquea increases to a total of 196 described species, 25 of them present in Mexico, and sect. Serpentes now has nine species, two of them distributed in Mexico. The number of woody bamboo species native to Mexico increases to 58, with 41 of them, including C. kochii, endemic to Mexico.
      原文链接:
    • NSTL
    • Magnolia Press

    Vochysia sobralii (Vochysiaceae), a new species from Serra do Cachimbo, Para, Brazil, and updated keys for Vochysia sect. Pachyantha

    Shimizu, Gustavo HiroakiGoncalves, Deise Josely Pereira
    7页
    查看更多>>摘要：Vochysia sobralii, a new species of Vochysiaceae endemic to the Serra do Cachimbo, in the state of Para, Brazil, is described and illustrated in this study. The newly described species is included in Vochysia section Pachyantha, which comprises species with tomentose ovary and without petals. Additionally, two updated identification keys (one dichotomous and other multi-access interactive) for V. sect. Pachyantha, with all ten species, are provided.
      原文链接:
    • NSTL
    • Magnolia Press

    Typification of the names Verbascum limnense and Celsia tomentosa (Scrophulariaceae) and a new nothospecies, V. x sipiadense, with the hybrid formula V. limnense x V. sinuatum

    Zografidis, ArisEsser, Hans-JoachimDimopoulos, PanayotisRaus, Thomas...
    7页
    查看更多>>摘要：The heterotypic synonyms Verbascum limnense and Celsia tomentosa are neotypified and lectotypified, respectively, and their nomenclature is clarified. The former binomial represents the correct name at species rank for a range-restricted, paleoendemic plant confined to Central Greece. Furthermore, the new nothospecies Verbascum x sipiadense, representing the hybrid formula V. limnense x V. sinuatum, is described from the island of Evvia (Euboea).
      原文链接:
    • NSTL
    • Magnolia Press

    Phylogenetic approach for identification and life cycles of Puccinia (Pucciniaceae) species on Carex (Cyperaceae) from northeastern China

    Ji, JingxinLi, ZhuangLi, YuKakishima, Makoto...
    35页
    查看更多>>摘要：About 150 species of Puccinia on Carex (Cyperaceae) have been reported globally. However, these species can be difficult to identify due to similarities in morphology and difficulties in identifying the host plants. The presence of many cryptic species is also suspected. Based on about 130 specimens on Carex and about 40 related specimens of spermogonial and aecial stages, all collected in northeastern China, a phylogenetic approach was conducted to clarify their identification and life cycles. In the phylogenetic analyses, 17 clades among specimens on Carex were detected. Each clade was interpreted as an independent species, although many clades were morphologically similar to each other. After comparative morphology with species previously reported, seven species including three first records in China (P. circaeae-caricis, P. urticae-inflatae and P. vaginatae) were identified, while ten species (P. caricis-artemisiae, P. caricis-atractylodes, P. caricis-hebeiensis, P. caricis-jilinensis, P. caricis-lactucae, P. caricis-pediformis, P. caricis-rafaensis, P. caricis-ribicola, P. caricis-tenuiformis and P. caricis-violae) are described as new. In uredinial and telial stages, many host plant species could not be identified as they lacked an inflorescence. Thus, a phylogenetic approach is more suitable for species identifications ofPuccinia on Carex rather than relying on rust morphology and host plant identification. Life cycle relations for 12 spermogonial and aecial species were also clarified using phylogenetic analyses. Furthermore, it is suspected that Puccinia species on Carex can be differentiated into species based on their spermogonial and aecial stages on the same or related host plants. Additionally, one new replacement name (P. caricis-aphanolepidis) for P. pulchella is proposed.
      原文链接:
    • NSTL
    • Magnolia Press