Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Olyra amapana soberstr & Zuluaga (Bambusoideae: Olyreae: Olyrinrae), Registro nuevo para Venezuela
Grande Allende,José Ramón;
Acta Botánica Venezuelica , 2009,
Abstract: olyra amapana is described, illustrated and reported for the first time for venezuela. the taxonomic placement of this species within the genus olyra as well as certain ecological and phytogeographical aspects are briefly discussed. o. amapana is very similar to o. juruana, from which it can be distinguished by the presence of a lower number of smaller racemes. o. amapana, o. bahiensis, o. ciliatifolia and o. juruana are bambusoid species of completely herbaceous habit and fusiform, smooth and pilose female anthecia.
Olyreae (Poaceae: Bambusoideae) da Marambaia, Rio de Janeiro, Brasil
Silva, Christian da;Conde, Marilena de Menezes Silva;Longhi-Wagner, Hilda Maria;
Rodriguésia , 2012, DOI: 10.1590/S2175-78602012000200010
Abstract: marambaia is located in southern rio de janeiro state, between sepetiba bay and the atlantic ocean (23o1's, 23o6's; 43o34'w, 44ow), within the atlantic forest domain. the tribe olyreae includes the herbaceous bamboos, found mainly in the new world tropics, usually comprising the herbaceous layer of forests. they are being threatened by habitat fragmentation and degradation. this study aims to determine which olyreae species occur in the area, contributing to our knowledge of their conservation, distribution and diversity. samples were collected from august 2008 to december 2010 by free walks along trails in the various plant formations. the occurrence of seven olyreae species distributed in atlantic slope-forest areas was confirmed. subtribe olyrinae is represented by cryptochloa capillata, olyra humilis, o. latifolia, parodiolyra micrantha, raddia brasiliensis and reitzia smithii, and subtribe parianinae by eremitis sp. olyra latifolia and p. micrantha are the most common species in the area. eremitis sp. is probably a new species.
Olyra bahiensis (Poaceae - Olyreae): uma nova espécie para a mata atlantica do estado da Bahia, Brasil
Oliveira, Reyjane Patrícia de;Longhi-Wagner, Hilda Maria;
Brazilian Journal of Botany , 2005, DOI: 10.1590/S0100-84042005000400017
Abstract: a new species of olyra is described and illustrated. olyra bahiensis r.p.oliveira & longhi-wagner is related to o. ciliatifolia raddi (widely distributed in south america), and to o. juruana mez, o. amapana soderstr. & zuloaga, and o. loretensis mez (occurring in the amazonian basin), sharing the presence of trichomes covering completely the female floret. the new species occurs in the atlantic rain forest of southern bahia, in the same area where other many species of grasses are found. the populations of o. bahiensis present small number of individuals, growing in shaded areas associated with cocoa plantations. an analytical key for o. bahiensis and allied species is also presented.
Géneros de bambúes le osos (Poaceae: bambusoideae: arundinarieae, bambuseae) de Venezuela Genera of Venezuelan woody bamboos (Poaceae: bambusoideae: arundinarieae, bambuseae)
Lynn G ClarK,Francisca U Ey
Acta Botánica Venezuelica , 2011,
Abstract: Se realizó la descripción morfológica de los 11 géneros de bambúes le osos nativos y exóticos asilvestrados presentes en Venezuela. Se presentan claves dicotómicas para identificar tanto especímenes vegetativos como fértiles, lista de las especies reportadas para cada género, con información sobre distribución y ecología. La lista fue elaborada a partir de las colecciones de Bambusoideae de los herbarios ISC, MER, MERC y VEN, y complementada con información de bases de datos, publicaciones periódicas, flórulas y catálogos. Se concluye que Venezuela tiene una diversidad importante de bambúes le osos, con 67 especies nativas, de las cuales 20 son endémicas (29,9%). Myriocladus, aulonemia, Merostachys y Rhipidocladum constituyen los géneros con mayor endemismo. chusquea y Myriocladus representan los géneros más diversos, con 20 y 12 especies, respectivamente. Los géneros con distribución más amplia en el país son arthrostylidium, chusquea, Guadua y Rhipidocladum; los géneros atractantha, Merostachys y Myriocladus presentan distribución restringida, limitada al estado Amazonas para el primero, y Amazonas y Bolívar para los dos últimos. A morphological description of the 11 genera of woody bamboos reported for Venezuela, including both native and naturalized exotic species was done. Dichotomous keys designed to identify vegetative as well as fertile specimens are proposed. An updated list of the species reported for each genus is also included, with information related to their distribution and ecology. The checklist was elaborated based on the Bambusoideae collections of the herbaria ISC, MER, MERC and VEN, complemented with information obtained from online available taxonomic databases, journal publications, local floras and catalogues. We conclude that Venezuela is noteworthy for its diversity in woody bamboos, with a total of 67 species, of which 20 (29.9%) are endemic. Myriocladus, aulonemia, Merostachys and Rhipidocladum represent the genera with the largest endemism. chusquea and Myriocladus stand out as the most diverse genera, with 20 and 12 species, respectively. arthrostylidium, chusquea, Guadua and Rhipidocladum represent the genera with broadest distribution range in the country. The distribution of atractantha, Merostachys and Myriocladus is restricted to Amazonas State for the first genus, and Amazonas and Bolívar, for the last two genera.
Comparative analysis of the leaf anatomy in two Parodiolyra species (Poaceae: Olyreae) occurring on forests in Eastern Brazil
Jesus Junior, LA;Oliveira, RP;Leite, KRB;Silva, LB;
Brazilian Journal of Biology , 2012, DOI: 10.1590/S1519-69842012000100025
Abstract: parodiolyra is a member of olyreae, a tribe of herbaceous bamboo species within the poaceae. the genus has five species, four of which were previously regarded as belonging to olyra l. parodiolyra has a neotropical distribution and only two species occur on forests in eastern brazil: p. micrantha (kunth) zuloaga & davidse and p. ramosissima (trin.) soderstr. & zuloaga, the first widely distributed in the neotropics while the second is endemic to the state of bahia. leaf anatomy of the two species was analysed with the aid of an optical microscope. the objective was to describe the microscopic characters and evaluate if they can be useful for the taxonomy of the genus. the observed anatomical structures did not differ from other genera of herbaceous bamboos, however some characters, both from the mesophyll and the epidermis, were useful to delimit the two species.
A New Species of Bambusoideae from Guizhou

Yang Ya-ling,Hsueh Chi-ju,

中国科学院研究生院学报 , 1993,
Abstract: One new species of the genus lndocalamus (Bambusoideae) is describedfrom China . It is lndocalamus chishuiensis Y. L. Yang et Hsueh.
An Illegitimate Name of Gelidocalamus Wen (Bambusoideae)

JI Chun-feng,WU Hao,YANG Guang-yao,

热带亚热带植物学报 , 2012,
Abstract: An illegitimate name of Gelidocalamus Wen (Bambusoideae), Gelidocalamus auritus B. M. Yang, is reported.
Scanning electron microscopy of the leaf epidermis of Merostachys Spreng. (Poaceae: Bambusoideae)
Gomes, Doria Maria Saiter;Neves, Léa de Jesus;
Acta Botanica Brasilica , 2009, DOI: 10.1590/S0102-33062009000200023
Abstract: this study presents data on leaf micromorphology of 13 species of merostachys spreng. (poaceae: bambusoideae), a neotropical genus with numerous endemic species. greatest species richness is found in central and southern brazil, with 41 of the 46 species described. species were collected in the field at the localities: itatiaia national park and tijuca national park, rio de janeiro state; fontes do ipiranga state park, s?o paulo state; santa teresa, espírito santo state and rio doce state park, minas gerais state. dried plant material came from the herbarium at the s?o paulo botany institute. the presence of prickles, silica bodies and macro hairs may be especially useful in delimiting species.
High-Throughput Sequencing of Six Bamboo Chloroplast Genomes: Phylogenetic Implications for Temperate Woody Bamboos (Poaceae: Bambusoideae)  [PDF]
Yun-Jie Zhang, Peng-Fei Ma, De-Zhu Li
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0020596
Abstract: Background Bambusoideae is the only subfamily that contains woody members in the grass family, Poaceae. In phylogenetic analyses, Bambusoideae, Pooideae and Ehrhartoideae formed the BEP clade, yet the internal relationships of this clade are controversial. The distinctive life history (infrequent flowering and predominance of asexual reproduction) of woody bamboos makes them an interesting but taxonomically difficult group. Phylogenetic analyses based on large DNA fragments could only provide a moderate resolution of woody bamboo relationships, although a robust phylogenetic tree is needed to elucidate their evolutionary history. Phylogenomics is an alternative choice for resolving difficult phylogenies. Methodology/Principal Findings Here we present the complete nucleotide sequences of six woody bamboo chloroplast (cp) genomes using Illumina sequencing. These genomes are similar to those of other grasses and rather conservative in evolution. We constructed a phylogeny of Poaceae from 24 complete cp genomes including 21 grass species. Within the BEP clade, we found strong support for a sister relationship between Bambusoideae and Pooideae. In a substantial improvement over prior studies, all six nodes within Bambusoideae were supported with ≥0.95 posterior probability from Bayesian inference and 5/6 nodes resolved with 100% bootstrap support in maximum parsimony and maximum likelihood analyses. We found that repeats in the cp genome could provide phylogenetic information, while caution is needed when using indels in phylogenetic analyses based on few selected genes. We also identified relatively rapidly evolving cp genome regions that have the potential to be used for further phylogenetic study in Bambusoideae. Conclusions/Significance The cp genome of Bambusoideae evolved slowly, and phylogenomics based on whole cp genome could be used to resolve major relationships within the subfamily. The difficulty in resolving the diversification among three clades of temperate woody bamboos, even with complete cp genome sequences, suggests that these lineages may have diverged very rapidly.
El género Colanthelia (Poaceae, Bambusoideae) en la Argentina  [cached]
Zulma E. Rúgolo de Agrasar,Lynn G. Clark
Darwiniana , 2000,
Abstract: Rúgolo de Agrasar, Z. E. & Clark, L. G. 2000. El género Colanthelia (Poaceae,Bambusoideae) en la Argentina. Darwiniana 38(3-4): 365-368.Se confirma la presencia del género Colanthelia McClure & E.W. Sm. para la Argentina, representadopor una especie, C. rhizantha (Hack.) McClure, hallada en floración en la provincia de Misiones. Elgénero Colanthelia se describe y se adjuntan diferencias y comentarios sobre los géneros relacionados.Colanthelia rhizantha se describe, se ilustra por primera vez y se se alan algunas consideraciones sobrela floración. Se incluye una clave de los géneros de bamúes le osos nativos de América presentes en laArgentina
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.