A new synonym of Ptilagrostis yadongensis and a new record of Stipa bhutanica to the flora of China (Poaceae)

In Nepal the Stipeae consists of six genera: Achnatherum, Orthoraphium, Piptatherum, Ptilagrostis, Stipa, Trikeraia, and 15 species. Two new combinations, Ptilagrostis duthiei (Hook. f.) M.Nobis & P.D.Gudkova and Achnatherum staintonii (Bor) M.Nobis & P.D.Gudkova, are proposed, and new country records for Stipa klimesii, Ptilagrostis dichotoma, Ptilagrostis concinna and Achnatherum jacquemontii are reported. The records of Stipa roborowskyi, S. przewalskyi, S. capillata, S. consanguinea, S. mongholica, and S. sibirica, previously thought to occur in Nepal were based on misidentifications, and these have been excluded from the list of Nepalese Stipeae. We present keys for the identification of genera and species, and a checklist including information on nomenclatural types, regional and national distribution, and habitat. A lectotype is designated for Stipa brandisii Mez.

show abstract

“…Bhutan, China (Tibet), Nepal (Noltie 1999; Nobis and Nobis 2013; Nobis et al 2015; Zhang et al 2016).…”

Section: Resultsmentioning

confidence: 99%

Synopsis of the tribe Stipeae (Poaceae) in Nepal

Nobis

Gudkova

Pendry

2019

View full text Add to dashboard Cite

show abstract

“…Roshev.) [6, 25, 26] in having contracted panicles. For distinguishing these 3 narrow panicled species, a key is provided here.…”

Section: Resultsmentioning

confidence: 99%

Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau

Zhang

Chen

2017

PLoS ONE

Self Cite

View full text Add to dashboard Cite

A new species, Ptilagrostis contracta, endemic to Qinghai-Tibet Plateau is described and illustrated. It is distinguished from other species in Ptilagrostis by having contracted panicles, 1-geniculate awns with hairy columns and scabrous bristles and evenly pubescent lemmas. Evidence from lemma epidermal pattern, cytology and molecular phylogenetic analyses based on the nuclear ITS sequence data confirm its systematic position in Ptilagrostis.

show abstract

Species delimitation and taxonomic revision of the Ptilagrostis dichotoma species complex (Poaceae) based on statistical morphological variations

Zhang,

Chen

2024

Botanical Journal of the Linnean Society

View full text Add to dashboard Cite

Statistical morphological variations at the population level serve as a robust foundation for species delimitation and taxonomic treatment. We employed this approach to investigate species delimitation within the Ptilagrostis dichotoma species complex (Poaceae), which is characterized by open panicles. While three species have been described, the boundaries between these species and the morphological distributions of all taxonomic traits remain unclear. In this study, we examined the geographical variability of 19 morphological traits based on at least six individuals from each of the 28 populations across the entire distributional range of the species complex. Our statistical analyses identified five distinct phenotypic clusters with specific geographical preferences. Three of these clusters corresponded to the previously described species, while the remaining two clusters represented previously undescribed species. Furthermore, our findings highlight several traits, such as basal leaf scabrosity, panicle branch pulvinae, and glume length, which exhibit distinct gaps between phenotypic units and prove highly valuable for species delimitation. Finally, two new species are described and a key is provided to differentiate the five species. This morphological revision establishes a basis for future studies on species boundaries and divergences of the complex based on other evidence.

show abstract

A new synonym of Ptilagrostis yadongensis and a new record of Stipa bhutanica to the flora of China (Poaceae)

Cited by 3 publications

References 0 publications

Synopsis of the tribe Stipeae (Poaceae) in Nepal

Synopsis of the tribe Stipeae (Poaceae) in Nepal

Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau

Species delimitation and taxonomic revision of the Ptilagrostis dichotoma species complex (Poaceae) based on statistical morphological variations

Contact Info

Product

Resources

About