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27 results for “Stipeae”
Fig 2 in Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau
Fig 2. Phylogram of Ptilagrostis obtained from MrBayes analysis of ITS dataset. Numbers above branches are support values of ML, numbers below the branches are support values of BI. doi:10.1371/journal.pone.0166603.g002
Fig 1. Ptilagrostis contracta. A-B in Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau
Fig 1. Ptilagrostis contracta. A-B. habitat; C. contracted panicle; D. base of panicle branch (pulvinae absent); E. spikelets; F. floret (lemma evenly pubescent); G. chromosomes; H. karyotype; I. Lemma epidermal pattern. Scale bar in D represents 2 mm; in E, F represent 5 mm; in G, H represent 5 μm. doi:10.1371/journal.pone.0166603.g001
Fig 3 in Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau
Fig 3. Illustration of Ptilagrostis contracta. A. habit; B. glume; C. floret; D. palea; E. callus F. outer surface of ligule; G. inner surface of ligule. Scale bar in B, C, F, G represent 5 mm; in D represent 2 mm; in E represent 0.5 mm (Drawn by Z. S. Zhang). doi:10.1371/journal.pone.0166603.g003
Fig 4 in Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau
Fig 4. Distribution map of Ptilagrostis contracta. doi:10.1371/journal.pone.0166603.g004
Data from: Cytotaxonomy of Piptatherum kuoi (Stipeae, Poaceae)
Open the record for dataset details and reuse information.
FIGURE 2 in A new species of Ptilagrostis (Stipeae, Poaceae) from Qinghai-Tibet Plateau
FIGURE 2. Ptilagrostis arcuata: A–B. habitat; C. habit; D. panicle; E. basal leaves; F. base of panicle (without bracts); G. floret (arcuate awn); R. chromosomes; S. karyotype. P. concinna: H. habit; I. panicle; J. basal leaves; K. base of panicle (with membranous bracts); L. floret (unigeniculate awn); P. junatovii: M. habit; N. panicle; O. basal leaves; P. base of panicle (without bracts); Q. floret (unigeniculate awn). Bars in G, L, Q represent 5 mm; in E, J, O represent 1 mm; in R, S represent 5 μm.
FIGURE 1. Ptilagrostis arcuata. A in A new species of Ptilagrostis (Stipeae, Poaceae) from Qinghai-Tibet Plateau
FIGURE 1. Ptilagrostis arcuata. A. habit; B. ligule; C. base of the panicle (without bract); D. spikelet; E. glume; F. lower glume; G. upper glume; H. floret. Drawn by Ms. Zhi-Juan Chen based on the type (Z. S. Zhang & L. L. Li 217).
FIGURE 5 in Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii
FIGURE 5. High mountain feather grass steppes near Iskanderkul Lake (Zeravshan Mts, Tajikistan), a habitat of Stipa ×fallax: (A) association of Stipetum drobovii, (B) association of Stipetum lipskyi, (C) Stipa ×fallax. Photos by M. Nobis, 30 May 2015.
FIGURE 3 in Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii
FIGURE 3. Micromorphology of Stipa drobovii (A–D), S.×fallax (E–H) and S. macroglossa subsp. macroglossa (I–L). (A, E, I) lemma surface - lateral view, (B, F, J) lemma apex, (C, G, K) callus, (D, H, L) adaxial surface of vegetative leaves. Abbreviations: h = hook, lc = long cell, sb = silica body, cc—cork cell, pr—prickle, mh—macrohair. Scale bars: C, G, K: 1 mm. Examined specimens of S. drobovii, S.×fallax and S. macroglossa were collected in Tajikistan (near Iskanderkul Lake) and are preserved at KRA.
FIGURE 2 in Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii
FIGURE 2. Pollen grains of Stipa taxa stained with Alexander's dye: (A) S. ×fallax, (B) S. macroglossa subsp. macroglossa, (C) S. drobovii. Scale bar 50 μm.
FIGURE 4 in Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii
FIGURE 4. Stipa ×fallax: (A) vegetative shoots, (B) awns, (C) anthecia, (D) panicle, (E) lower part of awns (columns) with anthecia. Scale bar: (A), (B), (D), (E) = 1 cm, (C) = 0.5 cm.
FIGURE 1 in Stipa ×fallax (Poaceae: Pooideae: Stipeae), a new natural hybrid from Tajikistan, and a new combination in Stipa drobovii
FIGURE 1. Biplot of principal component analysis (PCA) performed on 10 quantitative characters; ellipses indicate 95% confidence interval. For character abbreviations see Methods.
FIGURE 2 in Achnatherum pilosum (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau
FIGURE 2. Achnatherum pilosum (Zhang 2379, PE): A. Habitat; B. Habit; C. Panicles of A. pilosum, A. inaequiglume, A. inebrians, A. psilantherum, and A. saposhnikovii (from left to right); D. Glumes and floret; I. Lemma and proximal part of the awn; N. Anthers; S. Lemma epidermal pattern, scanning electron microscope micrograph; T. Chromosome number, mitotic metaphase. A. inaequiglume (Zhang 1303, PE): E. Glumes and floret; J. Lemma and proximal part of the awn; O. Anthers; A. inebrians (Zhang 2353, PE): F. Glumes and floret; K. Lemma and proximal part of the awn; P. Anthers; A. psilantherum (Zhang 2509, PE): G. Glumes and floret; L. Lemma and proximal part of the awn; Q. Anthers; A. saposhnikovii (Zhang 347, PE): H. Glumes and floret; M. Lemma and proximal part of the awn; R. Anthers. Scale bars: C = 5 cm; D–M = 2 mm; N–R = 1 mm; S = 10 μm; T = 5 μm.
FIGURE 1 in Achnatherum pilosum (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau
FIGURE 1. Achnatherum pilosum: A. Habit; B. Ligule; C. Glumes; D. Floret; E. Lemma, dorsal view; F. Floret, lateral view; G. Lemma, ventral view; H. Palea, dorsal view; I. Palea, ventral view; J. Lodicules; K. Anthers; L. Caryopsis, dorsal view, showing the embryo. Scale bars: A = 1 cm; B–L = 1 mm. Drawn by Mr. Zhong-Shuai Zhang (based on Zhang 2379).
FIGURE 1 in Variable morphology of the Madagascar endemic Aristida tenuissima (Poaceae: Aristidoideae) and the absence of Stipa (Poaceae: Pooideae, Stipeae) from Madagascar
FIGURE 1. Morphological variability in habit and awn within Aristida tenuissima. A-I: large plants with one-awned and three-awned spikelets on the same individual A large habit B spikelet with three unequal awns C spikelet with a single awn D lower glume, ventral view E upper glume, ventral view F floret G lower part of the floret and callus, lateral view H lemma surface with prickle hairs I lower part of the floret and callus, ventral view. J-L: medium-sized plants with one-awned spikelets J habit K spikelet with a single awn L ligule. M-O: small-sized plants with one-awned spikelets M habit enlarged N habit life size O spikelet with a single awn. P: spikelet with 3 equal awns. Scale bar: A, J, M = 4 cm; L = 1.3 mm; D,E = 2 mm; B, C, F, K, O, P = 3.3 mm; G, I = 1.1 mm; H = 0.5 mm; N = 1 cm. A-I drawn from Bosser 15438, J-L drawn from Bosser 15445, M-O drawn from Bosser 17926, P drawn from Perrier de la Bâthie 10866. Drawn by Lucy T. Smith.
FIGURE 2. Stipa baxoiensis and allied species. A in Stipa baxoiensis (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau, China
FIGURE 2. Stipa baxoiensis and allied species. A: Holotype of S. baxoiensis; B: Distribution map; C: Panicles; D: Leaf blades; E: Glumes, florets, middle awn segment. C–E: From left to right are S. baxoiensis, S. subsessiliflora and S. penicillata var. hirsuta.
FIGURE 1. Stipa baxoiensis. A in Stipa baxoiensis (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau, China
FIGURE 1. Stipa baxoiensis. A. Habitat; B. Habit; C. Leaf blades; D. Roots; E. Ligule and parts of leaf sheath and blade; F. Anthers and part of spikelets; G. Glumes and floret; H. Lemma and callus; I. Palea.
Figure 1 from: Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2020) Eriocoma valdesii, a new species from México (Poaceae, Stipeae). PhytoKeys 139: 21-28. https://doi.org/10.3897/phytokeys.139.47373
Figure 1 Eriocoma valdesii. A Habit B culm and panicle C panicle branch D sheath, ligule, and blade E lower glume F upper glume G floret H floret, enlarged I palea J palea, lodicules, ovary, and stamen K stamen L lodicules M ovary. Drawn from the holotype collection (Peterson, Romaschenko & Valdés Reyna 24469).
Figure 5 from: Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, ×Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa. PhytoKeys 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096
Figure 5 Thorneochloadiegoensis: A lower culm node B panicle C glumes D floret E floret (close up). Pseudoeriocomaeminens: F ligule G panicle H floret I floret (close up).
Figure 4 from: Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, ×Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa. PhytoKeys 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096
Figure 4 Oloptummiliaceum: A panicle B glumes C floret D lemma and palea E lemma base with disarticulation scar. Ptilagrostiellakingii: F habit G panicle H glumes I floret J lemma apex.
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