Infrageneric Classification of Eleocharis (Cyperaceae) Revisited: Evidence from the Internal Transcribed Spacer (ITS) Region of Nuclear Ribosomal DNA

Roalson, Eric H.; Friar, Elizabeth A.

doi:10.2307/2666645

Cited by 59 publications

(44 citation statements)

References 27 publications

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“…The need to revise the supraspecific classification in section Eleocharis has also been pointed out by Roalson & Friar (2000). In Mexico, both subseries, Eleocharis and Truncatae, are in need of a revision.…”

Section: Introductionmentioning

confidence: 99%

Eleocharis reznicekii (cyperaceae), a new species from the mexican high plateau

et al. 2007

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Eleocharis reznicekii (Cyperaceae, subg. Eleocharis, series Eleocharis), is described and illustrated. It is morphologically intermediate between E. densa and two species of Eleocharis subseries Eleocharis (E. macrostachya and E. palustris). The new species differs in a combination of characters including conspicuously compressed culms (3 to over 5 times wider than thick) and stylopodium sessile on a thin annular base. Eleocharis reznicekii differs additionally from E. densa by having relatively lax spikelets, mostly bifid styles, and achenes almost smooth at 30x. From E. macrostachya and E. palustris it is distinguished in its oblong to linear-oblong spikelets, the proximal floral scale clasping only 1/3 to slightly more than 1/2 of the culm, and the proximal plus 1-2(3) subproximal scales without a flower. Eleocharis reznicekii is known only from the state of Durango, in the Mexican high plateau and piedmont of the Sierra Madre Occidental.

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Section: Introductionmentioning

confidence: 99%

Eleocharis reznicekii (cyperaceae), a new species from the mexican high plateau

et al. 2007

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“…On the basis of intermediate anatomy (Bruhl and Perry 1995), low or undetectable C 4 enzyme values (Bruhl et al 1987) These findings further highlight Eleocharis in general and specifically series Tenuissimae (see Bruhl and Smith 2002) as a singularly appropriate group to study the evolution and expression of the C 4 syndrome. Studies should be extended to grow a wider sample of species of Eleocharis that exhibit a range of photosynthetic pathway characteristics (Appendix 1) and the related aquatic monotypics Egleria and Websteria (Bruhl 1995;Roalson and Friar 2000) under terrestrial conditions to test the stability of their C 3 status.…”

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confidence: 99%

Towards a Comprehensive Survey of C3 and C4 Photosynthetic Pathways in Cyperaceae

Bruhl¹,

Wilson²

2007

aliso

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Members of the family Cyperaceae were surveyed by original observation and from the literature to assess the distribution of C 3 and C 4 photosynthetic pathways in the family. All 107 genera were included in the current sample, with 91 genera assessed as consistently C 3 and 11 genera as C 4 . The genera Abildgaardia, Cyperus, Eleocharis, Fimbristylis, and Rhynchospora are variable for this trait. Of the total number (1474) of specific (1406) and infraspecific (68) taxa sampled, 938 taxa (63%) are C 3 , 527 taxa (36%) are C 4 , and nine species of Eleocharis are debatably intermediate or variable in pathway. Some data suggesting further infrageneric variation in photosynthetic pathways are discussed. The ''one cell distant criterion'' accurately predicts C 4 pathway in sedges, except in Eleocharis. Distribution and variability of photosynthetic pathways in Eleocharis are discussed. Photosynthetic pathway was found to be a useful taxonomic marker in Cyperaceae, despite variability in this trait at various taxonomic levels and the apparently multiple origin of C 4 photosynthesis within the family. A checklist of 3395 records of C 3 and C 4 sedges is presented.

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“…The distribution of E. ovata on that continent was reported together with the distribution of taxonomically closest E. obtusa (Willd.) Schult., which is not treated separately by some floras (see Roalson & Friar 2000). The home range of E. ovata is circumboreal, clearly zonal and almost completely limited to the southern temperate zone and does not have oceanic character.…”

Section: Resultsmentioning

confidence: 99%

Analysis of distribution patterns of selected ephemeral wetland species in Western Pomerania (NW Poland, NE Germany)

Popiela

Nalepka

Łysko

2010

Biodiversity: Research and Conservation

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Phytogeographical conditions of the occurrence of 13 selected ephemeral wetland species of the IsoÎto-Nanojuncetea class in Western Pomerania are analysed and discussed on the basis of distribution in Western Pomerania (maps are provided), distribution in Europe, general distribution range, taxonomic relations and palynological data. Present distribution patterns of the analysed taxa in Western Pomerania can thus be permanent not for a very long time and reflect the history of the settling of Pomerania by these species.

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Infrageneric Classification of Eleocharis (Cyperaceae) Revisited: Evidence from the Internal Transcribed Spacer (ITS) Region of Nuclear Ribosomal DNA

Cited by 59 publications

References 27 publications

Eleocharis reznicekii (cyperaceae), a new species from the mexican high plateau

Eleocharis reznicekii (cyperaceae), a new species from the mexican high plateau

Towards a Comprehensive Survey of C3 and C4 Photosynthetic Pathways in Cyperaceae

Analysis of distribution patterns of selected ephemeral wetland species in Western Pomerania (NW Poland, NE Germany)

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