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Text-fig. 2. Charred fern from diatomite of Saint-Bauzile. a: Overview of diatomite slab with large fragment of charred fern; SM.B 22258; scale bar = 1 cm. b: SEM overview image of charred fern pinnule. c: Enlargement of (b) showing details of undulating anticlinal walls of the epidermis. in Evidence For Wildfires During Deposition Of The Late Miocene Diatomites Of The Konservat-Lagerstätte Lake Saint-Bauzile (Ardèche, France) - Preliminary Results
Text-fig. 2. Charred fern from diatomite of Saint-Bauzile. a: Overview of diatomite slab with large fragment of charred fern; SM.B 22258; scale bar = 1 cm. b: SEM overview image of charred fern pinnule. c: Enlargement of (b) showing details of undulating anticlinal walls of the epidermis.
Fig. 3. Spatial 2D in Nir Raman Scattering For The Study Of Biochemical Features Of The Human Skin Epidermis And A Skin Surface Micro-Mapping In Vitro
Fig. 3. Spatial 2D image of the human epidermis surface: A) an optical image; B) mapping scheme; C) micro–Raman signal intensity map.
Fig. 2 in Nir Raman Scattering For The Study Of Biochemical Features Of The Human Skin Epidermis And A Skin Surface Micro-Mapping In Vitro
Fig. 2. Average Raman spectra of the unprocessed right–hand index fingertips skin epidermis of the 2 volunteers (in vitro). A,B,C- the man's skin samples D,E,F- the women's skin samples.
Fig.1 in Nir Raman Scattering For The Study Of Biochemical Features Of The Human Skin Epidermis And A Skin Surface Micro-Mapping In Vitro
Fig.1. The estimates of pure Raman spectra: A. - the man's skin right–hand index fingertips epidermis, B. - the women's skin right–hand index fingertips epidermis, measured directly from the sample surface (in vitro).
◂Fig. 4 Gynoecium of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A–R light microscopy; TS in horizontal orientation). A Secantial section. B, C TS %note cellular organisation). D Secantial section. E, F TS %note cellular organisation). G Secantial section of young gynoecium showing cellular organisation. H–J TS %note lacking cellular organisation, localisation in K–M). K–M LS at different levels from outside to inside of the same specimen %note strongly stained peripheral tissue; asterisks indicate tissue illustrated in H–J). N TS %note dehiscence lines of the prospective endocarp). O, P TS showing transmission tissue and dorsal bundles at top of style. Q vascularisation at base of gynoecium %note strongly stained peripheral tissue). R Vascularisation at base of flower %LS, longisection; TS, transverse section; db, dorsal bundle; dl, dehiscent line; ep, epidermis; lb, lateral bundle; tt, transmission tissue; ut, peripheral tissue; vb, ventral bundle; vs, ventral slit) in Observations on flower and fruit anatomy in dioecious species of Cordia (Cordiaceae, Boraginales) with evolutionary interpretations
◂Fig. 4 Gynoecium of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A–R light microscopy; TS in horizontal orientation). A Secantial section. B, C TS %note cellular organisation). D Secantial section. E, F TS %note cellular organisation). G Secantial section of young gynoecium showing cellular organisation. H–J TS %note lacking cellular organisation, localisation in K–M). K–M LS at different levels from outside to inside of the same specimen %note strongly stained peripheral tissue; asterisks indicate tissue illustrated in H–J). N TS %note dehiscence lines of the prospective endocarp). O, P TS showing transmission tissue and dorsal bundles at top of style. Q vascularisation at base of gynoecium %note strongly stained peripheral tissue). R Vascularisation at base of flower %LS, longisection; TS, transverse section; db, dorsal bundle; dl, dehiscent line; ep, epidermis; lb, lateral bundle; tt, transmission tissue; ut, peripheral tissue; vb, ventral bundle; vs, ventral slit)
Text-fig. 48. Scanning electron microscope (SEM, a, b, d–i) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c) images of "One-seeded fruit sp. 2" (a–c), "Unassigned, unnamed fruits" (d–f), Pazliopsis sp. (g, h) and "Follicular fruit with exotestal seeds" (i); Catefica locality, Portugal. a) Lateral view of fruit showing remains of tepals (te) and a single stamen (st); b) Detail of fruit surface showing short, scale-like, peltate trichomes (arrows); c) Transverse section (orthoslice xy0475) of fruit containing a single seed showing tepals (te) and fruit surface with peltate trichomes (arrow); note partial preservation of internal nutritive tissue; d) Fruit in lateral view showing the almost smooth epidermis with scattered openings; e) Detail of fruit surface from (d) showing the scattered openings in the epidermis interpreted as burst secretory cells (arrows); f) Dorsi-ventral view of tiny fruit with an irregular surface; g) Lateral view of exotestal seed assigned to cf. Pazliopsis sp.; h) Detail of fruit surface of seed in (g) showing faint facets of outer palisade layer with fine jigsaw-puzzle outlines of the anticlinal walls; i) Lateral view of fragmentary follicular fruit showing two exposed exotestal seeds. Specimens, Catefica 153-S174314 (a–c), Catefica 50-S170420 (d, e), Catefica 152-S174300 (f), Catefica 49-S172319 (g, h), Catefica MM158-P0272 (i). Scale bars = 300 Μm (a, c, d, f, g, i), 100 Μm (e), 50 Μm (b, h). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 48. Scanning electron microscope (SEM, a, b, d–i) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c) images of "One-seeded fruit sp. 2" (a–c), "Unassigned, unnamed fruits" (d–f), Pazliopsis sp. (g, h) and "Follicular fruit with exotestal seeds" (i); Catefica locality, Portugal. a) Lateral view of fruit showing remains of tepals (te) and a single stamen (st); b) Detail of fruit surface showing short, scale-like, peltate trichomes (arrows); c) Transverse section (orthoslice xy0475) of fruit containing a single seed showing tepals (te) and fruit surface with peltate trichomes (arrow); note partial preservation of internal nutritive tissue; d) Fruit in lateral view showing the almost smooth epidermis with scattered openings; e) Detail of fruit surface from (d) showing the scattered openings in the epidermis interpreted as burst secretory cells (arrows); f) Dorsi-ventral view of tiny fruit with an irregular surface; g) Lateral view of exotestal seed assigned to cf. Pazliopsis sp.; h) Detail of fruit surface of seed in (g) showing faint facets of outer palisade layer with fine jigsaw-puzzle outlines of the anticlinal walls; i) Lateral view of fragmentary follicular fruit showing two exposed exotestal seeds. Specimens, Catefica 153-S174314 (a–c), Catefica 50-S170420 (d, e), Catefica 152-S174300 (f), Catefica 49-S172319 (g, h), Catefica MM158-P0272 (i). Scale bars = 300 Μm (a, c, d, f, g, i), 100 Μm (e), 50 Μm (b, h).
Text-fig. 3. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of fruits of Canrightia foveolata sp. nov.; Catefica locality, Portugal. a) Volume rendering of fruit showing prominent rim around the middle of the fruit with reduced tepals (arrowheads) and partly abraded fruit wall exposing the pitted endotesta surface of one of two seeds (arrow); note two of the vascular bundles (vb) extending from the base of the fruit to the tepals; b) Voltex of fruit showing prominent rim around the fruit (arrowhead) and dense precipitation of crystals in the endothelium cells of one of the two seeds in the fruit; c) Longitudinal section of fruit (orthoslice yz0520) showing the inferred hypanthium rim (arrow head) and two seeds, one with a dense precipitation of crystals; note the prominent endothelium cells (asterisks) of the inner integument and the well-developed fruit wall above the seeds; d) Transverse section through basal part of fruit and seeds close to the micropyle (orthoslice xy0312) showing partly abraded fruit wall with five vascular bundles (vb) and details of the seed coat with endotesta (oi-end) surrounding the tegmen consisting of an outer epidermis (ii-o), middle layer (ii-m) and a distinct inner epidermis (endothelium) consisting of radially elongated cells (asterisk); e) Transverse section (orthoslice xy1680) through apical part of the fruit close to chalaza showing the tips of two seeds; note the endotesta (oi-end) surrounded by thick-walled cells of the exotesta (oi-o); f) Transverse section (orthoslice xy1485) through fruit in the region of the hypanthium rim showing sections through the two seeds close to the chalazal region; note endotesta (oi-end) surrounded by larger cells of exotesta (oi-o) and fruit wall (fr). Specimen, Catefica 49-S174249 (holotype, a–f). Scale bars = 300 Μm (a–c, e, f), 100 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 3. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of fruits of Canrightia foveolata sp. nov.; Catefica locality, Portugal. a) Volume rendering of fruit showing prominent rim around the middle of the fruit with reduced tepals (arrowheads) and partly abraded fruit wall exposing the pitted endotesta surface of one of two seeds (arrow); note two of the vascular bundles (vb) extending from the base of the fruit to the tepals; b) Voltex of fruit showing prominent rim around the fruit (arrowhead) and dense precipitation of crystals in the endothelium cells of one of the two seeds in the fruit; c) Longitudinal section of fruit (orthoslice yz0520) showing the inferred hypanthium rim (arrow head) and two seeds, one with a dense precipitation of crystals; note the prominent endothelium cells (asterisks) of the inner integument and the well-developed fruit wall above the seeds; d) Transverse section through basal part of fruit and seeds close to the micropyle (orthoslice xy0312) showing partly abraded fruit wall with five vascular bundles (vb) and details of the seed coat with endotesta (oi-end) surrounding the tegmen consisting of an outer epidermis (ii-o), middle layer (ii-m) and a distinct inner epidermis (endothelium) consisting of radially elongated cells (asterisk); e) Transverse section (orthoslice xy1680) through apical part of the fruit close to chalaza showing the tips of two seeds; note the endotesta (oi-end) surrounded by thick-walled cells of the exotesta (oi-o); f) Transverse section (orthoslice xy1485) through fruit in the region of the hypanthium rim showing sections through the two seeds close to the chalazal region; note endotesta (oi-end) surrounded by larger cells of exotesta (oi-o) and fruit wall (fr). Specimen, Catefica 49-S174249 (holotype, a–f). Scale bars = 300 Μm (a–c, e, f), 100 Μm (d).
Text-fig. 2. Scanning electron microscope (SEM, a, c–f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, b, g) images of the flower of Mugideiriflora portugallica (a, b) and fruits, seeds and pollen of Canrightia resinifera (c–g); Catefica locality, Portugal. a) Oblique, apical view of flower showing multiparted organization with numerous laminar tepals, stamens that are rhomboidal and flattened in transverse section and carpels that are borne on the short conical apex of the receptacle; b) Transverse section (orthoslice xy0800) through basal part of flower showing the elongate bases of the laminar tepals and the flattened rhomboidal bases of the stamens; c) Fruit in lateral view showing irregular surface resulting from the abundant resin bodies in the fruit and hypanthium wall, scars from stamens on the rim of the hypanthium (arrowheads) and the lobed apical stigmatic region (st); d) Broken fruit with one or two seeds missing but showing three pendant, orthotropous seeds with pointed micropylar regions (mi) and a finely pitted crystalliferous endotesta; note the remains of the apical vascular bundles (vb); e) Single seed isolated from a fruit showing two distinct bundles (vb) still attached apically to the chalazal region of the seed, the pointed micropyle (mi) and the finely pitted surface of the crystalliferous endotesta; f) Monocolpate pollen from stigmatic region of fruit showing the long colpus and coarse reticulum; g) Transverse section (orthoslice xy0705) through a fruit showing four seeds all with radially elongated endothelium cells formed from the inner epidermis of the tegmen (asterisks). Specimens, Catefica 150-S174254 (a, b), Catefica 49-S170377 (c), Catefica 49-S170372 (d), Catefica 50-S170401 (e), Catefica 50-S170404 (f), Catefica 50-S174906 (g). Scale bars = 300 Μm (a–e, g), 6 Μm (f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 2. Scanning electron microscope (SEM, a, c–f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, b, g) images of the flower of Mugideiriflora portugallica (a, b) and fruits, seeds and pollen of Canrightia resinifera (c–g); Catefica locality, Portugal. a) Oblique, apical view of flower showing multiparted organization with numerous laminar tepals, stamens that are rhomboidal and flattened in transverse section and carpels that are borne on the short conical apex of the receptacle; b) Transverse section (orthoslice xy0800) through basal part of flower showing the elongate bases of the laminar tepals and the flattened rhomboidal bases of the stamens; c) Fruit in lateral view showing irregular surface resulting from the abundant resin bodies in the fruit and hypanthium wall, scars from stamens on the rim of the hypanthium (arrowheads) and the lobed apical stigmatic region (st); d) Broken fruit with one or two seeds missing but showing three pendant, orthotropous seeds with pointed micropylar regions (mi) and a finely pitted crystalliferous endotesta; note the remains of the apical vascular bundles (vb); e) Single seed isolated from a fruit showing two distinct bundles (vb) still attached apically to the chalazal region of the seed, the pointed micropyle (mi) and the finely pitted surface of the crystalliferous endotesta; f) Monocolpate pollen from stigmatic region of fruit showing the long colpus and coarse reticulum; g) Transverse section (orthoslice xy0705) through a fruit showing four seeds all with radially elongated endothelium cells formed from the inner epidermis of the tegmen (asterisks). Specimens, Catefica 150-S174254 (a, b), Catefica 49-S170377 (c), Catefica 49-S170372 (d), Catefica 50-S170401 (e), Catefica 50-S170404 (f), Catefica 50-S174906 (g). Scale bars = 300 Μm (a–e, g), 6 Μm (f).
Geometric and mechanical guidance: role of stigmatic epidermis in early pollen tube pathfinding in Arabidopsis
<div> <p>Geometry and cell wall mechanics guide early pollen tube growth in <em>Arabidopsis thaliana</em></p> </div> <div><span><span><span>Lucie</span> <span>Riglet</span></span>, <span><span>Catherine</span> <span>Quilliet</span></span>, C<span><span>hristophe</span> <span>Godin</span></span>, <span><span>Karin</span> <span>John</span></span>, I<span><span>sabelle</span> <span>Fobis-Loisy</span></span></span></div> <div> </div> <div><span><span>preprint available under</span></span></div> <div><span><span>doi:</span> https://doi.org/10.1101/2024.02.05.578915</span></div> <p>---</p> <p>contained are the source codes and scripts to reproduce the results shown in Figs. 3,4 and Supplementary Figures S2, S3</p> <p>(the results of Fig. S3 D,E is not contained in the preprint)</p> <p>---</p> <p>Numerical code and script files to reproduce pollen tube trajectories on papilla surfaces</p> <p>tested on:</p> <p>*) macOS Catalina 10.15.6 </p> <p><span>*) Apple clang version 11.0.3 (clang-1103.0.32.62)</span></p> <p><span>Target: x86_64-apple-darwin19.6.0</span></p> <p><span>*) R 4.0.0 GUI 1.71 Catalina build (7827)</span></p> <p>---</p> <p></p>
Data from: Stomatal patterning is differently regulated in adaxial and abaxial epidermis in Arabidopsis
Open the record for dataset details and reuse information.
FIGURE. Blades of C. spongifolia. A. Sub-marginal and marginal collective veins, with laminal tissue (2–4 mm) between. B. Marginal collective veins fused below shallow sinus. C. Underside with spongy appearance produced by "false pores"; and thick, rubbery texture indicated by axial wrinkles formed in crease. D. Underside showing primary vein and pinnate lateral veins surrounded by spongy tissue. E. Sub-stomatal cavities revealed by transmitted light (scale unit 0.25 mm), F. Sub-stomatal cavities revealed by removing lower epidermis (A–D: Mengla County, 2018. E–F: Bach Ma NP seedling, ex situ). Photos: PJM. in Colocasia spongifolia sp. nov. (Araceae) in southern China and central Vietnam
FIGURE. Blades of C. spongifolia. A. Sub-marginal and marginal collective veins, with laminal tissue (2–4 mm) between. B. Marginal collective veins fused below shallow sinus. C. Underside with spongy appearance produced by "false pores"; and thick, rubbery texture indicated by axial wrinkles formed in crease. D. Underside showing primary vein and pinnate lateral veins surrounded by spongy tissue. E. Sub-stomatal cavities revealed by transmitted light (scale unit 0.25 mm), F. Sub-stomatal cavities revealed by removing lower epidermis (A–D: Mengla County, 2018. E–F: Bach Ma NP seedling, ex situ). Photos: PJM.
FIGURE. Marchantia emarginata Reinw., Blume & Nees (A) Dorsal surface of thallus (B, C) Epidermal pores from the dorsal epidermis of thallus (D) Laminal scale (E) Median scale (F) Appendage of laminal scale (G) Margin of the gemma cup. A–G Ruklani & Rubasinghe 169-14SR (PDA). in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE. Marchantia emarginata Reinw., Blume & Nees (A) Dorsal surface of thallus (B, C) Epidermal pores from the dorsal epidermis of thallus (D) Laminal scale (E) Median scale (F) Appendage of laminal scale (G) Margin of the gemma cup. A–G Ruklani & Rubasinghe 169-14SR (PDA).
FIGURE. Reboulia hemisphaerica (L.) Raddi I. (A) dorsal surface of thallus with archegoniphores B) female receptacles (C) archegoniphore (D) male receptacle (E) ventral scale (F) appendage of ventral scale G) mature female receptacle with sporophytes (H) epidermal pore from the dorsal epidermis of the thallus (I) cross section of an epidermal pore. A–C, E–I, Ruklani & Rubasinghe 211-14SR (PDA); D, Ruklani & Rubasinghe 303-15SR (PDA). in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE. Reboulia hemisphaerica (L.) Raddi I. (A) dorsal surface of thallus with archegoniphores B) female receptacles (C) archegoniphore (D) male receptacle (E) ventral scale (F) appendage of ventral scale G) mature female receptacle with sporophytes (H) epidermal pore from the dorsal epidermis of the thallus (I) cross section of an epidermal pore. A–C, E–I, Ruklani & Rubasinghe 211-14SR (PDA); D, Ruklani & Rubasinghe 303-15SR (PDA).
FIGURE. Lunularia cruciata (L.) Dumort. ex Lindb. I. (A) Dorsal surface of thallus with gemma cups B) Epidermal pore from dorsal epidermis of thallus (C) Gemma (D) Ventral scale (E) Appendage of ventral scale (F) Cells with oil bodies on ventral scale (G) Cross section of epidermal pore and air chambers. A–G, Ruklani & Rubasinghe 113-14SR (PDA). in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE. Lunularia cruciata (L.) Dumort. ex Lindb. I. (A) Dorsal surface of thallus with gemma cups B) Epidermal pore from dorsal epidermis of thallus (C) Gemma (D) Ventral scale (E) Appendage of ventral scale (F) Cells with oil bodies on ventral scale (G) Cross section of epidermal pore and air chambers. A–G, Ruklani & Rubasinghe 113-14SR (PDA).
FIGURE. Marchantia acaulis Steph. (A) Dorsal surface of thallus (B) Archegoniophores (C) Female receptacle (D & E) Epidermal pores from the dorsal epidermis of the thallus (F) Laminal scale (G) Median scale (H) Appendage of laminal scale (I) Margin of the gemma cup. Ruklani & Rubasinghe 108-14SR (PDA). in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE. Marchantia acaulis Steph. (A) Dorsal surface of thallus (B) Archegoniophores (C) Female receptacle (D & E) Epidermal pores from the dorsal epidermis of the thallus (F) Laminal scale (G) Median scale (H) Appendage of laminal scale (I) Margin of the gemma cup. Ruklani & Rubasinghe 108-14SR (PDA).
FIGURE 4. A in Morphological studies on leaf epidermis in six species of Nekemias Raf. (Vitaceae) from China
FIGURE 4. A maximum likelihood tree showing the types of anticlinal wall of both leaf sides and habitats.
FIGURE 3 in Morphological studies on leaf epidermis in six species of Nekemias Raf. (Vitaceae) from China
FIGURE 3. The hair types of Nekemias and its related species of Ampelopsis. A. N. hypoglauca (Chu 206); B. N. chaffanjonii (Nie 4544). C–F: The venations and epidermal cells with sparsely pubescent, C. N. cantoniensis (Chu 007), D. N. grossedentata (Chu 001); E. N. megalophylla (Chu 401), F. Ampelopsis delavayana (Nie 4438), G–H: the epidermal cells with bending villous. G. N. rubifolia (Chu 238), H. N. rubifolia (Chu 025). Scale bar = 50μm.
FIGURE 2 in Morphological studies on leaf epidermis in six species of Nekemias Raf. (Vitaceae) from China
FIGURE 2. Micrographs of the abaxial leaf of Nekemias and Ampelopsis species. A. N. grossedentata (Chu 001); B. N. grossedentata (Chu 007); C. N. grossedentata (Chu 017); D. N. grossedentata (Chu 037); E. N. grossedentata (Chu 049); F. N. grossedentata (Chu 051); G. N. grossedentata (Chu 074); H. N. grossedentata (Chu 086); I. N. grossedentata (Chu 205); J. N. grossedentata (Chu 226); K. N. grossedentata (Chu 247); L. N. cantoniensis (Chu 002); M. N. cantoniensis (Chu 011); M. N. cantoniensis (Chu 015); O. N. cantoniensis (Chu 022); P. N. cantoniensis (Chu 061); Q. N. cantoniensis (Chu 218); R. N. cantoniensis (Chu 235); S. N. chaffanjonii (Nie 4536); T. N. chaffanjonii (Nie 4544); U. N. rubifolia (Chu 025); V. N. rubifolia (Chu 238); W. N. rubifolia (Chu 239); X. N. megalophylla (ZDG 201706); Y. N. megalophylla (Chu 401); Z. N. hypoglauca (Chu 206); Aa. N. hypoglauca (Chu 207); Ab. Ampelopsis delavayana (Nie 4438). Scale bar = 50μm.
FIGURE 1 in Morphological studies on leaf epidermis in six species of Nekemias Raf. (Vitaceae) from China
FIGURE 1. Micrographs of the adaxial leaf of Nekemias and Ampelopsis species. A. N. grossedentata (Chu 001); B. N. grossedentata (Chu 007); C. N. grossedentata (Chu 017); D. N. grossedentata (Chu 037); E. N. grossedentata (Chu 049); F. N. grossedentata (Chu 051); G. N. grossedentata (Chu 074); H. N. grossedentata (Chu 086); I. N. grossedentata (Chu 205); J. N. grossedentata (Chu 226); K. N. grossedentata (Chu 247); L. N. cantoniensis (Chu 002); M. N. cantoniensis (Chu 011); M. N. cantoniensis (Chu 015); O. N. cantoniensis (Chu 022); P. N. cantoniensis (Chu 061); Q. N. cantoniensis (Chu 218); R. N. cantoniensis (Chu 235); S. N. chaffanjonii (Nie 4536); T. N. chaffanjonii (Nie 4544); U. N. rubifolia (Chu 025); V. N. rubifolia (Chu 238); W. N. rubifolia (Chu 239); X. N. megalophylla (ZDG 201706); Y. N. megalophylla (Chu 401); Z. N. hypoglauca (Chu 206); Aa. N. hypoglauca (Chu 207); Ab. Ampelopsis delavayana (Nie 4438). Scale bar = 50μm.
FIGURES 26–30 in Comparative morphology of leaf epidermis in 34 species of Maianthemum (Asparagaceae, Polygonateae) and their systematic significance
FIGURES 26–30. Micrographs of either the abaxial or adaxial leaf epidermis of Maianthemum species. 26. M. racemosum subsp. racemosum; 27. M. racemosum subsp. amplexicaule; 28. M. salvinii; 29. M. scilloideum; 30. M. septifolium. In each species, a: adaxial surface (LM), b: abaxial surface (LM), c: abaxial surface × 300 (SEM), d: abaxial surface × 2000 (SEM). Scale bar = 100μm (a & b), 10μm (c), 2μm (d).
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