A Numerical Analysis of the Eragrostideae (Gramineae)

Phillips, S. M.

doi:10.2307/4114733

Cited by 27 publications

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“…due to its similar floral structure and free pericarps, but the author noted that T. advena differed from Sporobolus in having multiple florets per spikelet (as is found in Eragrostis). Phillips (1982) placed this species in Eragrostis, pointing out that the floral structure of T. advena fit her concept of Eragrostis and that free pericarps are found elsewhere in the genus. The Van den Borre and Watson (1997) analyses suggested that Acamptoclados, Diandrochloa, Neeragrostis, and Thellungia are closely related to Eragrostis, but because composite terminals were used, it is impossible to determine whether these genera are separate lineages or if they are better included within Eragrostis.…”

Section: Introductionmentioning

confidence: 82%

“…Acamptoclados, a monotypic genus (ϭ E. sessilispica) from the plains and prairies of North America, was separated from Eragrostis by Nash on the basis of its free pericarp and lack of secondary inflorescence branches (Small 1903). Phillips (1982) Watson and Dallwitz 1992). Phillips (1982) rejected this treatment, however, and included these species in Eragrostis.…”

Section: Introductionmentioning

confidence: 99%

“…Phillips (1982) Watson and Dallwitz 1992). Phillips (1982) rejected this treatment, however, and included these species in Eragrostis. Eragrostiella comprises five species in southern Asia and Australia and was separated from Eragrostis by Bor (1940) based on the spicate inflorescences and tufted habit found in these species.…”

Section: Introductionmentioning

confidence: 99%

“…Stiburus, a small genus of two species from southern Africa, was first described by Stapf (1900). These species were separated from Eragrostis on the basis of their villous spikelets, but Phillips (1982) pointed out that a number of Old World Eragrostis species have pubescent spikelets and submerged Stiburus into Eragrostis. The monotypic genus Thellungia (ϭ E. advena) is native to Australia and was first described in 1920 by Stapf from alien material found growing among wool refuse near a worsted mill in Switzerland (Stapf 1920).…”

Section: Introductionmentioning

confidence: 99%

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Eragrostis (Poaceae): Monophyly and Infrageneric Classification

Ingram¹,

Doyle²

2007

aliso

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Eragrostis is a large genus in subfamily Chloridoideae of Poaceae. Recent phylogenetic analyses have suggested that the genus may not be monophyletic, that some of its segregate genera may be better placed within Eragrostis, and that current infrageneric classifications may not represent monophyletic groups. We have used molecular sequence data from the plastid locus rps16 and the nuclear gene waxy from a broad sample of Eragrostis species and representatives of six of the seven segregate genera to address these issues. We found that Eragrostis is monophyletic with the inclusion of several of the segregates, including Acamptoclados, Diandrochloa, and Neeragrostis. The placement of Cladoraphis and Stiburus is uncertain. Thellungia does not belong in Eragrostis and is actually more closely related to Sporobolus. These data also suggest that existing infrageneric classifications are inadequate and do not correspond to monophyletic groups within Eragrostis.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Eragrostis (Poaceae): Monophyly and Infrageneric Classification

Ingram¹,

Doyle²

2007

aliso

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“…La aplicación de técnicas numéricas multivariadas contribuye a reconocer grupos discretos de especímenes con mayor objetividad y los caracteres que permiten separarlos. Estas técnicas adquieren mucha importancia en grupos tan complicados como las gramíneas y han sido utilizados con buenos resultados en varios estudios taxonómicos (Phillips 1982, Giussani 2000, Flores 2003, Sebola & Balkwill 2009). Dentro de estas técnicas, el análisis de conglomerados y el de coordenadas principales, constituyen una buena herramienta para separar especies o grupos de especies similares morfológicamente (Randall & Hilu 1986, Henderson 2002, 2005, 2006, Cron et al 2007, así como para generar nuevas variables que puedan expresar la información contenida en el conjunto original de datos (Pla 1986, Crisci & López 1983.…”

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Revisión taxonómica del género Eragrostis Wolf en Chile, basada en análisis estadísticos multivariados

Escobar¹,

Ruíz²,

Finot³

et al. 2011

Gayana Bot.

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RESUMENEragrostis Wolf es un género cosmopolita que incluye alrededor de 350 especies, distribuidas principalmente en regiones tropicales y subtropicales. Debido al amplio rango de variación morfológica dentro del género, los límites específi cos frecuentemente se sobreponen, siendo muy difícil establecer caracteres diagnósticos para delimitar las especies. Para Chile se han citado entre 10 y 15 taxones. El objetivo fue realizar una revisión de las especies del género Eragrostis que crecen en Chile, complementada con el uso de técnicas estadísticas multivariadas (análisis de conglomerados y análisis de coordenadas principales). Se determinó la presencia en Chile de 12 especies, 2 variedades y una subespecie. Ocho taxones son nativos y cuatro son introducidos. Se elaboró una clave, descripciones e ilustraciones de cada taxón, junto a su rango de distribución geográfi ca.PALABRAS CLAVE: Poaceae, análisis de coordenadas principales, análisis de conglomerados. ABSTRACTEragrostis Wolf is a cosmopolitan genus which includes nearly 350 species, mainly distributed in tropical and subtropical regions. Due to the wide range in variation within this genus, the species limits are often overlapping, making diffi cult to establish specifi c boundaries and diagnostic characters. Beetwen 10 and 15 species have been previously cited for Chile. The objective was to establish the limits and the diagnostic characters in Chilean taxa, using multivariate analysis (cluster analysis and principal coordinates analysis). Twelve species, two varieties and one subspecies are recognized in the present treatment. Eight taxa are native and 4 are introduced. A key, descriptions, illustrations and the geographical distribution of each species are given. KEYWORDS:Poaceae, principal coordinates analysis, cluster analysis. INTRODUCCIÓNEragrostis Wolf (Eragrostideae, Chloridoideae) reúne alrededor de 350 especies en el mundo; se distribuye en las regiones tropicales y subtropicales, preferentemente con climas áridos. Los centros de distribución del género son las sabanas del sur de África y el centro-norte de México (Clayton & Renvoize 1986, Watson & Dallwitz 1992, Peterson et al. 1995, 1997, Peterson & Boechat 2001, Peterson 2003, Peterson & Valdés-Reyna 2005.Los representantes de la tribu Eragrostideae poseen una considerable variación morfológica. A nivel genérico e incluso tribal los límites morfológicos frecuentemente se sobreponen, por lo cual ha sido muy difícil señalar caracteres que delimiten los géneros. La mejor combinación de caracteres usada para diferenciar a Eragrostis de los otros géneros de la tribu son la presencia en Eragrostis de infl orescencias en panícula (ocasionalmente un racimo), ISSN 0016-5301 Gayana Bot. 68(1): 49-85, 2011 50 Gayana Bot. 68(1), 2011 espiguillas multifl oras donde la desarticulación de la lemma y la pálea ocurren separadamente, lemmas usualmente 3-nervias no aristadas, páleas arqueadas longitudinalmente con quillas escabrosas o ciliadas, a veces aladas y fotosíntesis C4, excepto en E. walteri Pilg. (P...

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Prolamin and Immunological Studies in the Poaceae. Iii. Subfamily Chloridoideae

Hilu

Esen

1993

American J of Botany

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Prolamin size variation and structural similarities were used as molecular characters to address questions pertaining to tribal structure and phylogenetic origin of the Chloridoideae. Prolamin polypeptides were resolved by SDS-PAGE (sodium dodecyl sulphate polyacrylamide gel electrophoresis), and the immunological cross-reactivities were measured by ELISA (enzyme-linked immunosorbent assay) and immunoblotting. Thirty-three species were examined from 24 genera belonging to six chloridoid tribes and three outgroup subfamilies (Arundinoideae, Panicoideae, and Pooideae). The study supports the inclusion ofthe Cynodonteae, Eragrosteae, and Sporoboleae under one tribe. Members ofthe Pappophoreae and Spartineae appeared as distinct lineages. The results suggest a strong evolutionary relationship between the Chloridoideae and Arundinoideae.a Species for which antisera were produced. b USDA used the synonym us Tetrapogon mossambicensis (K. Schum) Chippindale.

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A Numerical Analysis of the Eragrostideae (Gramineae)

Cited by 27 publications

References 0 publications

Eragrostis (Poaceae): Monophyly and Infrageneric Classification

Eragrostis (Poaceae): Monophyly and Infrageneric Classification

Revisión taxonómica del género Eragrostis Wolf en Chile, basada en análisis estadísticos multivariados

Prolamin and Immunological Studies in the Poaceae. Iii. Subfamily Chloridoideae

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