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opencc-by-4.0Aug 2015View details →

Fig. 3 in Morphological characteristics of major airborne pollen in Korea peninsula

Fig. 3. SEM micrographs of airborne pollen grains of herb plants. AC. Ambrosia artemisiifolia. D. Boehmeria spicata. E, F. Chenopodium album var. centrorubrum. G. Humulus japonicus. H, I. Miscanthus sinensis. JL. Pennisetum alopecuroides.

opencc-by-4.0Aug 2015View details →

Fig. 2 in Morphological characteristics of major airborne pollen in Korea peninsula

Fig. 2. SEM micrographs of airborne pollen grains of woody plants. A, B. Acer negundo. C. Celtis sinensis. D, E. Fraxinus sieboldiana. F, G. Pterocarya stenoptera. H, I. Quercus aliena.

opencc-by-4.0Aug 2015View details →

Fig. 1 in Morphological characteristics of major airborne pollen in Korea peninsula

Fig. 1. SEM micrographs of airborne pollen grains of Gymnosperm. AC. Juniperus chinenesis. CF. Metasequoia glytostroboides. GI. Pinus rigida.

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Is Poaceae pollen size a useful proxy in palaeoecological studies? New insights from a Poaceae pollen morphological study in the Amazon

Aim: Grasslands occupy around 40% of the Earth's land surface and can be regarded as the most common vegetation type in the world, with Poaceae being the most widespread angiosperm family of all. Poaceae pollen size has previously been suggested as a proxy to reconstruct the past vegetation and climates in the Amazon area, but it is still controversial if this variable indeed can be used in broader spatial and deep-time scales. Here we set out to perform a comprehensive assessment and test the robustness of this proxy. Location: Amazon drainage basin (ADB). Taxon: Poaceae. Methods: One hundred and twenty-seven specimens from 58 species (non-crops) across the Poaceae phylogeny from the Amazon drainage basin (ADB) were prepared for pollen grain size analyses, in order to explore their relationship with abiotic and biotic variables (vegetation type, soil composition, climate conditions, photosynthetic pathway, and genome size). Phylogenetic generalized least squares (P-GLS) model and linear mixed models (LMM) were applied to assess the proxy. Results: Our measurement data show that Poaceae pollen size presents a very wide range (18.77 - 71.62 μm), not only at the genus and species levels but also within species. There is no obvious relationship between pollen size and the explanatory variables considered here, however. Main conclusion: Poaceae (non-crop) pollen size does not respond to explanatory variables, and therefore cannot as a useful proxy to reconstruct past vegetation and climate.

opencc-zeroNov 2022View details →

opencc-by-4.0Apr 2007View details →

Fig. 1 in Pollen eaters and pollen morphology: co-evolution through the Permian and Mesozoic

Fig. 1. Eucommiidites group pollen (Cryptosaccites pabularis Krassilov et Tekleva) in the gut compression of Ceroxyela dolichocera Rasnitsyn (Xyelidae, Hymenoptera) from the Lower Cretaceous of Baissa, Transbaikalia: (A) insect impression; (B) stereomicroscope view of the fore-gut with pollen grains; (C) pollen grains amassed at the hind end of the abdomen, (D) same, enlarged. Scale bars: 2 mm (A), 1 mm (B, C), 30 µm (D).

opencc-by-4.0Apr 2007View details →

Fig. 2 in Pollen eaters and pollen morphology: co-evolution through the Permian and Mesozoic

Fig. 2. Pollen loads of Palaeozoic and Mesozoic insects: (A) Protohaploxypinus-type taeniate pollen from Sellardsiopsis conspicua G. Zalessky, Lower Permian Tchekarda locality; (B) Protohaploxypinus- type taeniate pollen from Parapsocidium uralicum G. Zalessky (Psocida), same locality; (C) Vittatina-type taeniate pollen from Sojanidelia floralis Rasnitsyn (Grylloblattida), same locality; (D) Lunatisporites-type taeniate pollen from Idelopsocus diradiatus Rasnitsyn, same locality; (E) Eucommiidites-group pollen (Cryptosaccites pabularis Krassilov et Tekleva) from Ceroxyela dolichocera Rasnitsyn (Xyelidae, Hymenoptera), Lower Cretaceous Baissa locality, Transbaikalia; (F) Classopollis-type rimulate pollen from Aboilus cf. dilutus Gorochov (Orthoptera, katydids), Upper Jurassic of Karatau, Kazakhstan. Scale bars: 30 µm (A), 10 µm (B–F).

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Is Poaceae pollen size a useful proxy in palaeoecological studies? New insights from a Poaceae pollen morphological study in the Amazon

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publicNov 2022View details →

opencc-zeroAug 2020View details →

Phylogenetic and ecological correlates of pollen morphological diversity in a neotropical rainforest

Morphology varies enormously across clades, and the morphology of a trait may reflect ecological function or the retention of ancestral features. We examine the tension between ecological and phylogenetic correlates of morphological diversity through a case study of pollen grains produced by angiosperms in Barro Colorado Island, Panama (BCI). Using a molecular phylogeny of 730 taxa we demonstrate a statistically significant association between morphological and genetic distance for these plants. However, the relationship is non-linear, and while close relatives share more morphological features than distant relatives, above a genetic distance of ~0.7 increasingly distant relatives are not more divergent in phenotype. The pollen grains of biotically pollinated and abiotically pollinated plants overlap in morphological space, but certain pollen morphotypes and individual morphological traits are unique to these pollination ecologies. Our data show that the pollen grains of biotically pollinated plants are significantly more morphologically diverse than those of abiotically pollinated plants.

publicAug 2020View details →

Phylogenetic and ecological correlates of pollen morphological diversity in a neotropical rainforest

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publicAug 2025View details →

Data from: Pollinator and flower morphology interact to influence pollen receipt

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publicOct 2025View details →

The pollination ecology and mouthpart morphology of a pollen-feeding fly Incurviseta cf. maculifrons (Diptera: Lauxaniidae) in the Australian Alpine

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Pollen morphology of Astragalus Sect. Eustales in Turkey

This dataset contains data from pollen morphology of Astragalus Sect. Eustales in Turkey described in the paper: " KARAMAN ERKUL S, DUMAN H, ATEŞ A. (2021). Morphological and molecular evidence for a new species Astragalus oksutdagensis (Fabaceae) from Turkey, Nordic Journal of Botany, 10.1111/njb.03237. Pollen grains trizonocolporate, radially symmetrical and isopolar at Astragalus oksutdagensis, A. flavescens and A. vestitus (A. sect. Eustales). The pollen shape of A. oksutdagensis is subprolate (ratio P/E 1.23±0.06), polar view (P) 33,25±1,95 µm, equatorial view (E) 27.11±1.33 µm. Amb circular, ornamentation psilate-perforate at polar region, reticulate-perforate at equatorial region. Colpus thin and tall (Clg 23.72±1.34 µm, Clt 4.52±0.6 µm), operculate, operculum membrane has granulate ornamentation. Pore suboblate, Plg 8.49±0.96 µm, Plt 9.84±0.85µm. Apocolpium 12.69±2.24 µm and mezocolpium 19.58±1.62 µm.The pollen shape of A. vestitus is prolate-spheroidal (1.13±0.05), P 31.1±2.72 µm, E 27.56±1.46 µm. Amb semitriangular, ornamentation perforate. Colpus thin and tall (Clg 24.76±2.85 µm, Clt 5.42±1.5 µm), operculate, operculum membrane has granulate ornamentation. Pore spheroidal, Plg 9.41±1.48 µm, Plt 9.29±1.18 µm. Apocolpium 11.56±1.35 µm and mezocolpium 19.16±0.9 µm. Pollen shape of A. flavescens is subprolate (1.32±0.06), P 36.6±1.56 µm, E 27.83±1.17 µm. Amb semitriangular, ornamentation microreticulate. Colpus thin and tall (Clg 28.12±1.45 µm, Clt 4.13±0.78 µm), operculate, operculum membrane has granulate ornamentation. Pore suboblate, Plg 7.9±0.83 µm, Plt 10.09±0.83 µm. Apocolpium 14.43±0.84 µm and mezocolpium 20.82±0.93 µm.

opencc-zeroDec 2021View details →

FIGURE. Illustration of Paphiopedilum charlesworthii var. lannaense W. Tongkham, S. Pumikong, N. Potapohn & W. Bundithya A. flower, B. dorsal sepal, C. synsepal, D. petal, E. labellum frontal view, F. labellum side view, G. labellum longitudinal section, H. pedicel, I. pedicel longitudinal section and transverse section, J. stigma and pollen, K. staminode, L. column side view, M. leaf, N. peduncle, bract and pedicel, and O. flowering plant. Drawn by W. Tongkham from S. Pumikong 021001 (holotype QBG! [no. 132572]). in Paphiopedilum charlesworthii var. lannaense, a new slipper orchid from Northern Thailand identified by morphological and AFLP analyses

FIGURE. Illustration of Paphiopedilum charlesworthii var. lannaense W. Tongkham, S. Pumikong, N. Potapohn & W. Bundithya A. flower, B. dorsal sepal, C. synsepal, D. petal, E. labellum frontal view, F. labellum side view, G. labellum longitudinal section, H. pedicel, I. pedicel longitudinal section and transverse section, J. stigma and pollen, K. staminode, L. column side view, M. leaf, N. peduncle, bract and pedicel, and O. flowering plant. Drawn by W. Tongkham from S. Pumikong 021001 (holotype QBG! [no. 132572]).

FIGURE 8 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 8. Scanning electron micrographs of pollen in Veronica species: 49−51. V. multifida; 52−54. V. orientalis subsp. nimrodi; 55−57. V. orientalis subsp.orientalis; 58−60. V. polita.

FIGURE 6 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 6. Scanning electron micrographs of pollen in Veronica species: 25−27. V. cymbalaria; 28−30. V. debilis; 31−33. V. donii; 34−36. V. gentianoides subsp. glacialis.

FIGURE 5 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 5. Scanning electron micrographs of pollen in Veronica species: 13−15. V. bombycina subsp. froediniana; 16−18. V. bozakmanii; 19−21. V. caespitosa; 22−24. V. chamaedrys.

FIGURE 3 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 3. LM photographs of pollen in Veronica species: 1. V. anagallis-aquatica subsp. anagallis-aquatica; 2. V. anagallis-aquatica subsp. lysimachioides; 3. V. anagalloides subsp. heureka; 4. V. beccabunga; 5. V. bombycina subsp. froediniana; 6. V. bozakmanii; 7. V. caespitosa; 8. V. chamaedrys; 9. V. cymbalaria; 10. V. debilis; 11. V. donii; 12. V. gentianoides subsp. glacialis; 13. V. grisebachii; 14. V. persica; 15. V. macrostachya subsp. mardinensis; 16. V. microcarpa; 17. V. multifida; 18. V. orientalis subsp. nimrodi; 19. V. orientalis subsp. orientalis; 20. V. polita.

FIGURE 2 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 2. Comparison between polar and equatorial diameter of pollen in the studied taxa of Veronica.

FIGURE 4 in Pollen morphology of some Veronica species (Plantaginaceae) from Turkey

FIGURE 4. Scanning electron micrographs of pollen in Veronica species: 1−3. V. anagallis-aquatica subsp. anagallis-aquatica; 4−6. V. anagallis-aquatica subsp. lysimachioides; 7−9. V. anagalloides subsp. heureka; 10−12. V. beccabunga.