Search results for "Stipeae"

showing 3 items of 3 documents

Multivariate morphometric analysis of the Stipa turkestanica group (Poaceae: Stipa sect. Stipa)

2015

Based on numerical analyses of macromorphological characters (cluster analysis, principal coordinate analysis and principal component analysis), scanning electron microscopy observation of lemma and lamina micromorphology, as well as field observations, five taxa belonging to the Stipa turkestanica group have been recognized in the mountain area of Central Asia. They are S. turkestanica subsp. turkestanica, S. turkestanica subsp. trichoides, S. macroglossa subsp. macroglossa, S. macroglossa subsp. kazachstanica and S. kirghisorum. As a result of this study, we propose one new combination, S. macroglossa var. pubescens, and designate lectotypes for S. turkestanica subsp. trichoides and S. ma…

0106 biological sciencesnumerical analysisStipa turkestanicaIdentification keyPlant Sciencemicromorphology010603 evolutionary biology01 natural sciencesLemma (botany)identification keyBotanydistributionTypificationтаксоныStipeaeNomenclatureEcology Evolution Behavior and SystematicsMiddle Asiabiologybiology.organism_classificationStipeaeTaxonnomenclatureStipaковылевыеtypificationDistribution ; Identification key ; Micromorphology ; Middle Asia ; Nomenclature ; Numerical analysis ; Stipeae ; Typification010606 plant biology & botanyPlant Systematics and Evolution
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Neotrinia gen. nov. and Pennatherum sect. nov.in Achnatherum (Poaceae: Stipeae)

2019

Stipa splendens (syn. Achnatherum splendens) has been transferred to Neotrinia (Tzvelev) M. Nobis, P. Gudkovaet A. Nowak gen. nov.as N. splendens (Trin.) M. Nobis, P. Gudkova et A. Nowak, based on a comparison of the macromorphology and lemma micromorphology of the Asian representatives of the tribe Stipeae. Lemma epidermal patterns in the examined species are presented and discussed. Additionally, a new section Pennatherum M. Nobis comprising Achnatherum pelliotii, a species recently transferred to Achnatherum from Ptilagrostis is also proposed. This taxon clearly differs from Ptilagrostis by the lemma micromorphology. The species with typical maize-like lemma micromorphological pattern is…

taxonomynew sectionnew genusPoaceaeStipeaeTurczaninowia
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Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii

2017

Stipa ×fallax nothosp. nov . (Poaceae), from western Pamir Alai Mts (Tajikistan), is described and illustrated. Field observation, numerical analyses of morphology, and pollen grain viability data show that it originated from hybridization between S. drobovii and S. macroglossa subsp. macroglossa , species representing sections Smirnovia and Stipa , respectively. Stipa ×fallax is morphologically close to S. ×alaica and S. ×hissarica , but is distinguished by its shortly pilose lower part of the awn and densely pubescent leaves. Characters distinguishing S. ×fallax from its parental species as well as similar hybrid taxa in section Smirnovia that also grow in Central Asia are presented. The …

0106 biological sciencesnumerical analysisnew combinationCentral asiaMonocotsPlant Sciencemicromorphologymedicine.disease_cause010603 evolutionary biology01 natural sciencestaxonomyPollenmorphologyBotanymedicinePoaceaeEcology Evolution Behavior and SystematicsTaxonomybiologypollen viabilitybiology.organism_classificationPooideaeStipeaeTaxonTaxonomy (biology)Stipa010606 plant biology & botanyPhytotaxa
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