A taxonomic revision of Zygodon (Orthotrichaceae) in southern South America

Calabrese, Graciela M.

doi:10.1639/0007-2745(2006)109[453:atrozo]2.0.co;2

Cited by 20 publications

(11 citation statements)

References 3 publications

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“…(Lara et al, 2016) and Pulvigera (Lara et al, 2020), but not in Lewinskya. The presence of a connective membrane has also been reported for species of other genera (e.g., Calabrese, 2006;. It seems to be an ancestral character that is present in all the large lineages, and it is apparently only totally absent in Stoneobryum and Sehnemobryum (in Orthotrichinae), as well as in Atlantichella, Plenogemma, and Lewinskya (in Lewinskyinae), although in the latter genus samples with partial basal membrane have been reported (Lara et al, 2018).…”

Section: Characterization Of Key Morphological Traits In Orthotrichoimentioning

confidence: 62%

Insights Into the Evolutionary History of the Subfamily Orthotrichoideae (Orthotrichaceae, Bryophyta): New and Former Supra-Specific Taxa So Far Obscured by Prevailing Homoplasy

et al. 2021

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Mosses of the subfamily Orthotrichoideae represent one of the main components of the cryptogam epiphytic communities in temperate areas. During the last two decades, this taxonomical group has undergone an extensive revision that has led to its rearrangement at the generic level. However, their phylogenetic relationships and inferences on the evolutionary patterns that have driven the present diversity have little advanced. In this study, we present a dated molecular phylogenetic reconstruction at the subfamily level, including 130 samples that represent the 12 genera currently recognized within the subfamily, and the analysis of four molecular markers: ITS2, rps4, trnG, and trnL-F. We also analyze 13 morphological characters of systematic value to infer their origin and diagnostic utility within the subfamily. The phylogenetic reconstruction yields three main clades within the subfamily, two of which correspond to the tribe Zygodonteae, and one to Orthotricheae. Within Zygodonteae, the genus Zygodon results to be a polyphyletic artificial assembly, and we propose to separate a new genus named Australoria. Conversely, our results do not support the separation of Pentastichella and Pleurorthotrichum at the genus level and we therefore propose to include Pleurorthotrichum in Pentastichella. Regarding Orthotricheae, our analyses clearly allow the distinction of two subtribes: Orthotrichinae and Lewinskyinae. Within the latter, Ulota results a polyphyletic entity, and therefore we propose the segregation of a separate new genus named Atlantichella. Dating analyses allow us to conclude that the split of the tribes within Orthotrichoideae dates from the Middle Jurassic, while the diversification of Orthotrichum and Zygodon probably started during the Late Cretaceous. However, most of the extant genera of this subfamily seem to be younger, and apparently its highest diversification burst took place during the Oligocene. Finally, the analysis of the morphological traits reveals that most of the characters previously used to separate genera and here tested are homoplastic, which has hindered the taxonomical and systematic proposals for decades. However, even if there are no exclusive characters, all of the genera can be defined by the combination of a few characters.

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Section: Characterization Of Key Morphological Traits In Orthotrichoimentioning

confidence: 62%

Insights Into the Evolutionary History of the Subfamily Orthotrichoideae (Orthotrichaceae, Bryophyta): New and Former Supra-Specific Taxa So Far Obscured by Prevailing Homoplasy

et al. 2021

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“…Specimen determinations follow Churchill & Linares (1965), Zander (1972), Monte (1977). Griffin & Morales (1983), Cárdenas (1995), Duarte (1997), Gradstein et al (2001), Muñoz (1999), Allen (2002), Calabrese (2006) and Frahm (1991).…”

Section: Methodsmentioning

confidence: 99%

Altitudinal zonation of mosses in west of the Sierra Nevada of Cocuy, Boyacá, Colombia

Mejia

Castro

Peralta

et al. 2020

Hoehnea

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This study was carried out with bryophyte populations in order to study the presence of populations and how they change over altitudinal gradients. Mosses were chosen as a model to do this study because they have a high sensitivity to climatic conditions and wide distribution. The western region of the Sierra Nevada del Cocuy, Boyacá, Colombia has a wide range of climate and ecosystems due to its complex topography. Plots were sampled every 200 m from the peak of Mount Mahoma at 4,200 m a.s.l. south to the Chicamocha River canyon at 1,200 m a.s.l. Diversity and cover are analyzed in each plot from soil, rock and bark substrates. We found 80 species distributed in 29 families, with Pottiaceae and Brachytheciaceae the most diverse families. Ours results show a tendency of the diversity and the coverage to increase with altitude, and we observed five altitudinal belts with three populations defined by mosses species. The Páramo and Superpáramo belts are the richest ones.

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“…He (1998) published a checklist of the mosses of Chile based on literature reports and herbarium specimens in which he accepted 778 species and 88 subspecific taxa in 203 genera and 63 families. Recently, several other bryologists have published reports of taxa that are new to He's checklist of Chile (e.g., Frey & Schaumann 2002, Cano 2003, Müller & Pursell 2003, Frahm 2005, Calabrese et al 2006, considered synonyms of taxa reported in the flora (e.g., Ochyra & Matteri 2001, Frahm 2005, Jiménez et al 2005, Jiménez & Cano 2006 or deleted from the flora (e.g., Frahm 2005). He (1998) pointed out the need for further studies in Chile since the moss number is low compared to some of the other South American countries with recent checklists, e.g., Brazil with 1964 moss taxa, Bolivia with 1222, Argentina with 1002, Colombia with 900, Peru with 889 and Ecuador with 874.…”

Section: Introductionmentioning

confidence: 99%

“…Much of the disparity between the two regions is due to the lack of collecting, especially in the north, however, recent collecting in the northern regions (e.g., Cano 2003) have helped to fill in some of the gaps in Regions I, II and VII. But the southern part of Chile has been collected to a larger extent because of its more interesting rugged terrain, with a greater variety of habitats as well as more precipitation in the region, undoubtedly making it richer in bryophytes and with recent collecting (e.g., Frey & Schaumann 2002, Calabrese et al 2006 there is an increasing number of species in some of the Regions. The main reasons that the Bío-Bío Region was chosen was because of the lack of collecting in the region and more importantly because of the environmental disturbance that is being caused by a series of dams which are presently being built on the upper part of the Bío-Bío River.…”

Section: Introductionmentioning

confidence: 99%

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<strong>Studies on the moss flora of the Bío-Bío region of Chile</strong>

Ireland

Bellolio

Rodríguez

et al. 2006

BDE

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An extensive study was made on the moss flora of the Bío-Bío Region (VIII Región) in south-central Chile in 2001-2003. Collections were made in all four provinces of the region: Arauco, Bío-Bío, Concepción and Ñuble. Approximately 265 localities in the region were explored with over 6,000 mosses collected in the four provinces. The mosses of this region had not previously been studied to any great extent and with part of the region’s environment being destroyed by the construction of several dams on one of the major rivers, the Bío-Bío, the study of this area seemed of utmost importance. Thus far, a total of 20 taxa were found which are new to Chile, making a total of 877 known for the country, with four new taxa known for South America. An additional 87 taxa are reported new only to the Bío-Bío Region. That number, together with some new records from the recent literature, increases the total for the Region from 190 to 300. It was determined from the 87 new taxa for the Bío-Bío Region that the majority (41) represent northern extensions of taxa, while a much smaller number (10) represent southern extensions. The remainder (36) fill in a gap in the distribution of the taxa between the northern and southern parts of the country. Many difficult species still remain to be identified and the number of species new to science, to Chile and to the Bío-Bío Region, is certain to increase when the remaining specimens are identified.

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A taxonomic revision of Zygodon (Orthotrichaceae) in southern South America

Cited by 20 publications

References 3 publications

Insights Into the Evolutionary History of the Subfamily Orthotrichoideae (Orthotrichaceae, Bryophyta): New and Former Supra-Specific Taxa So Far Obscured by Prevailing Homoplasy

Insights Into the Evolutionary History of the Subfamily Orthotrichoideae (Orthotrichaceae, Bryophyta): New and Former Supra-Specific Taxa So Far Obscured by Prevailing Homoplasy

Altitudinal zonation of mosses in west of the Sierra Nevada of Cocuy, Boyacá, Colombia

<strong>Studies on the moss flora of the Bío-Bío region of Chile</strong>

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