&lt;i&gt;Impatiens theuerkaufiana&lt;/i&gt; (Balsaminaceae), a new scapigerous species from the Western Ghats, India

Narayanan, M. K. Ratheesh; Joseph, Jayesh P.; Kumar, Neeraj; Sivadasan, M.; Alfarhan, Ahmed

doi:10.11646/phytotaxa.83.1.3

Cited by 11 publications

(9 citation statements)

References 11 publications

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“…Several new species are identified within these regions each year (e.g. Narayanan et al, 2013;Utami, 2013;Kuang et al, 2014;Luo et al, 2014). The overwhelming majority of species are local endemics.…”

Section: Introductionmentioning

confidence: 99%

Phylogeny of Impatiens (Balsaminaceae): integrating molecular and morphological evidence into a new classification

et al. 2015

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Impatiens L. is one of the largest angiosperm genera, containing over 1000 species, and is notorious for its taxonomic difficulty. Here, we present, to our knowledge, the most comprehensive phylogenetic analysis of the genus to date based on a total evidence approach. Forty-six morphological characters, mainly obtained from our own investigations, are combined with sequence data from three genetic regions, including nuclear ribosomal ITS and plastid atpB-rbcL and trnL-F. We include 150 Impatiens species representing all clades recovered by previous phylogenetic analyses as well as three outgroups. Maximum-parsimony and Bayesian inference methods were used to infer phylogenetic relationships. Our analyses concur with previous studies, but in most cases provide stronger support. Impatiens splits into two major clades. For the first time, we report that species with three-colpate pollen and four carpels form a monophyletic group (clade I). Within clade II, seven well-supported subclades are recognized. Within this phylogenetic framework, character evolution is reconstructed, and diagnostic morphological characters for different clades and subclades are identified and discussed. Based on both morphological and molecular evidence, a new classification outline is presented, in which Impatiens is divided into two subgenera, subgen. Clavicarpa and subgen. Impatiens; the latter is further subdivided into seven sections.

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Section: Introductionmentioning

confidence: 99%

Phylogeny of Impatiens (Balsaminaceae): integrating molecular and morphological evidence into a new classification

et al. 2015

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“…Montane forest-grassland mosaics in the tropics form hotspots within hotspots of global biodiversity [ 1 , 2 ] supporting several endemic species [ 3 ] and are recognised centres of speciation for some taxa [ 4 ]. Both forest and grassland communities are characterised by high spatial turnover in species composition [ 2 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Topographic and Bioclimatic Determinants of the Occurrence of Forest and Grassland in Tropical Montane Forest-Grassland Mosaics of the Western Ghats, India

et al. 2015

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The objective of this analysis was to identify topographic and bioclimatic factors that predict occurrence of forest and grassland patches within tropical montane forest-grassland mosaics. We further investigated whether interactions between topography and bioclimate are important in determining vegetation pattern, and assessed the role of spatial scale in determining the relative importance of specific topographic features. Finally, we assessed the role of elevation in determining the relative importance of diverse explanatory factors. The study area consists of the central and southern regions of the Western Ghats of Southern India, a global biodiversity hotspot. Random forests were used to assess prediction accuracy and predictor importance. Conditional inference classification trees were used to interpret predictor effects and examine potential interactions between predictors. GLMs were used to confirm predictor importance and assess the strength of interaction terms. Overall, topographic and bioclimatic predictors classified vegetation pattern with approximately 70% accuracy. Prediction accuracy was higher for grassland than forest, and for mosaics at higher elevations. Elevation was the most important predictor, with mosaics above 2000m dominated largely by grassland. Relative topographic position measured at a local scale (within a 300m neighbourhood) was another important predictor of vegetation pattern. In high elevation mosaics, northness and concave land surface curvature were important predictors of forest occurrence. Important bioclimatic predictors were: dry quarter precipitation, annual temperature range and the interaction between the two. The results indicate complex interactions between topography and bioclimate and among topographic variables. Elevation and topography have a strong influence on vegetation pattern in these mosaics. There were marked regional differences in the roles of various topographic and bioclimatic predictors across the range of study mosaics, indicating that the same pattern of grass and forest seems to be generated by different sets of mechanisms across the region, depending on spatial scale and elevation.

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“…Rhodolith beds are ubiquitous and occur from low intertidal zone to depths of over 150 m in tropical to polar sea 5 . In India, rhodolith beds are reported from the Aramda reef member (Late Pleisto-cene to Holocene) of Chaya Formation, Gujarat 6 , wherein the sectional studies of the bed revealed the presence of nongeniculate coralline algal genera such as Lithoporella, Lithothamnion, Lithophyllum, Porolithon and Sporolithon.…”

Section: Occurrence Of Live Rhodolith Bed Of Lithophyllum Kotschyanummentioning

confidence: 99%

<i>Impatiens bhimgadensis</i> (Balsaminaceae), a New Species from Karnataka, India

Bhaskar¹,

Sringeswara²

2018

Current Science

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<i>Impatiens theuerkaufiana</i> (Balsaminaceae), a new scapigerous species from the Western Ghats, India

Cited by 11 publications

References 11 publications

Phylogeny of Impatiens (Balsaminaceae): integrating molecular and morphological evidence into a new classification

Phylogeny of Impatiens (Balsaminaceae): integrating molecular and morphological evidence into a new classification

Topographic and Bioclimatic Determinants of the Occurrence of Forest and Grassland in Tropical Montane Forest-Grassland Mosaics of the Western Ghats, India

<i>Impatiens bhimgadensis</i> (Balsaminaceae), a New Species from Karnataka, India

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