taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03DD87C1FFD2FF8ED2E4B3DADFDE3EF1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15520572/files/figure.png	https://doi.org/10.5281/zenodo.15520572	Figs. 4–12. Habit, vegetative, and tetra/bisporangial conceptacle characters of Roseolithon littorale sp. nov. Fig. 4. Warty holotype specimen (SAP 115684, tetrasporophyte). Scale bar = 1 cm. Fig. 5. Vertical fracture through the inner thallus showing the monomerous construction with multistratose non-coaxial hypothallial filaments (h) giving rise to perithallial filaments (p) (SAP 115686). Scale bar = 100 μm. Fig. 6. Vertical fracture of the outer thallus showing a single-layered epithallus (arrows), subepithallial initials (i) and cell fusions (f) between adjacent perithallial filaments (SAP 115687). Scale bar = 10 μm. Inset: Detail of epithallus showing flattened epithallial cells with flared outer walls (trapezoidal) (arrowheads) (SAP 115684). Scale bar = 10 μm. Fig. 7. Surface view showing raised tetra/bisporangial conceptacle without differentiation into a peripheral rim and pore plate (arrow) (SAP 115684). Scale bar = 1 mm. Fig. 8. Surface view of a multiporate tetra/bisporangial conceptacle with rosette cells in depressions giving the central pore plate a pitted appearance (arrowheads) (SAP 115684). Scale bar = 100 μm. Inset: Detail of a pore (asterisk) opening bordered by six rosette cells (1–6) (SAP 115684). Scale bar = 10 μm. Fig. 9. Vertical fracture through a raised multiporate tetra/bisporangial conceptacle (SAP 115687). Scale bar = 100 μm. Fig. 10. Vertical section through a multiporate tetra/bisporangial conceptacle roof showing apical plugs (asterisks) occluding the pore canals (SAP 115684). Scale bar = 50 μm. Fig. 11. Vertical fracture through a tetrasporangial conceptacle pore canal (asterisk) lined by slightly sunken rosette cells (arrows) followed by squarish (sq) and elongate (e) pore canal cells (SAP 115684). Scale bar = 10 μm. Fig. 12. Vertical section through the thallus showing a buried tetrasporangial conceptacle with a zonately divided tetrasporangium (t) (SAP 115684). Scale bar = 50 μm.	Figs. 4–12. Habit, vegetative, and tetra/bisporangial conceptacle characters of Roseolithon littorale sp. nov. Fig. 4. Warty holotype specimen (SAP 115684, tetrasporophyte). Scale bar = 1 cm. Fig. 5. Vertical fracture through the inner thallus showing the monomerous construction with multistratose non-coaxial hypothallial filaments (h) giving rise to perithallial filaments (p) (SAP 115686). Scale bar = 100 μm. Fig. 6. Vertical fracture of the outer thallus showing a single-layered epithallus (arrows), subepithallial initials (i) and cell fusions (f) between adjacent perithallial filaments (SAP 115687). Scale bar = 10 μm. Inset: Detail of epithallus showing flattened epithallial cells with flared outer walls (trapezoidal) (arrowheads) (SAP 115684). Scale bar = 10 μm. Fig. 7. Surface view showing raised tetra/bisporangial conceptacle without differentiation into a peripheral rim and pore plate (arrow) (SAP 115684). Scale bar = 1 mm. Fig. 8. Surface view of a multiporate tetra/bisporangial conceptacle with rosette cells in depressions giving the central pore plate a pitted appearance (arrowheads) (SAP 115684). Scale bar = 100 μm. Inset: Detail of a pore (asterisk) opening bordered by six rosette cells (1–6) (SAP 115684). Scale bar = 10 μm. Fig. 9. Vertical fracture through a raised multiporate tetra/bisporangial conceptacle (SAP 115687). Scale bar = 100 μm. Fig. 10. Vertical section through a multiporate tetra/bisporangial conceptacle roof showing apical plugs (asterisks) occluding the pore canals (SAP 115684). Scale bar = 50 μm. Fig. 11. Vertical fracture through a tetrasporangial conceptacle pore canal (asterisk) lined by slightly sunken rosette cells (arrows) followed by squarish (sq) and elongate (e) pore canal cells (SAP 115684). Scale bar = 10 μm. Fig. 12. Vertical section through the thallus showing a buried tetrasporangial conceptacle with a zonately divided tetrasporangium (t) (SAP 115684). Scale bar = 50 μm.	2024-11-25	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke		Zenodo	biologists	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke			
03DD87C1FFD2FF80D15EB006D99D3DD0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15520574/files/figure.png	https://doi.org/10.5281/zenodo.15520574	Figs. 13–15. Habit and vegetative characters of Roseolithon sabulosum sp. nov. Fig. 13. Warty to fruticose holotype specimen (SAP 115691, tetrasporophyte). Scale bar = 1 cm. Fig. 14. Vertical section through the inner thallus showing the monomerous construction, with multistratose non-coaxial hypothallial filaments (h) giving rise to perithallial filaments (p) (SAP 115694). Scale bar = 50 μm. Fig. 15. Vertical fracture through the outer thallus showing a single-layered epithallus (arrows), subepithallial initials (i) and cell fusions (f) between adjacent perithallial filaments (SAP 115697). Scale bar = 10 μm. Inset: Detail of epithallus showing flattened epithallial cells with flared outer walls (trapezoidal) (arrowheads) (SAP 115699). Scale bar = 10 μm.	Figs. 13–15. Habit and vegetative characters of Roseolithon sabulosum sp. nov. Fig. 13. Warty to fruticose holotype specimen (SAP 115691, tetrasporophyte). Scale bar = 1 cm. Fig. 14. Vertical section through the inner thallus showing the monomerous construction, with multistratose non-coaxial hypothallial filaments (h) giving rise to perithallial filaments (p) (SAP 115694). Scale bar = 50 μm. Fig. 15. Vertical fracture through the outer thallus showing a single-layered epithallus (arrows), subepithallial initials (i) and cell fusions (f) between adjacent perithallial filaments (SAP 115697). Scale bar = 10 μm. Inset: Detail of epithallus showing flattened epithallial cells with flared outer walls (trapezoidal) (arrowheads) (SAP 115699). Scale bar = 10 μm.	2024-11-25	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke		Zenodo	biologists	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke			
03DD87C1FFD2FF80D15EB006D99D3DD0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15537249/files/figure.png	https://doi.org/10.5281/zenodo.15537249	Figs. 16–27. Tetra/bisporangial conceptacle characters of Roseolithon sabulosum sp. nov. Fig. 16. Surface view showing raised multiporate tetra/bisporangial conceptacles (arrows) (SAP 115691). Scale bar = 500 μm. Fig. 17. Surface view of a raised multiporate tetra/bisporangial conceptacle without differentiation into a peripheral rim and pore plate with depressed rosette cells giving the conceptacle pore plate a pitted appearance (arrows) (SAP 115698). Scale bar = 200 μm. Fig. 18. Vertical fracture through a protuberance showing multiporate tetra/bisporangial conceptacles more or less flush with (arrow) or raised above (double arrowhead) the surrounding thallus surface (SAP 115697). Scale bar = 100 μm. Fig. 19. Surface view showing multiporate tetra/bisporangial conceptacles surrounded by raised vegetative rims (arrows) (SAP 115693). Scale bar = 500 μm. Fig. 20. Surface view of multiporate tetra/bisporangial conceptacles undergoing an enveloping process by the overgrowth of peripheral vegetative rims (arrows) giving conceptacles a volcano-like appearance (SAP 115693). Scale bar = 100 μm. Fig. 21. Vertical fracture through an old multiporate tetra/bisporangial conceptacle about to be fully enveloped due to continuous overgrowth by peripheral vegetative filaments (arrows) (SAP 115698). Scale bar = 100 μm. Fig. 22. Vertical fracture through a recently buried tetra/bisporangial conceptacle as a result of the complete overgrowth by peripheral vegetative filaments (arrow) (SAP 115700). Scale bar = 100 μm. Fig. 23. Surface view of a tetrasporangial conceptacle pore plate with rosette cells in depressions (arrowheads) giving the conceptacle pore plate a pitted appearance (SAP 115698). Scale bar = 50 μm. Inset: Detail of a pore opening (asterisk) bordered by seven rosette cells (1–7) (SAP 115694). Scale bar = 10 μm. Fig. 24. Vertical section through a multiporate tetra/bisporangial conceptacle roof with apical plugs (asterisks) occluding the pore canals, lined by disintegrated rosette cells (arrows) and underlying wedge-shaped pore canal cells (w) (SAP 115691). Scale bar = 50 μm. Fig. 25. Vertical fracture through a mature multiporate tetrasporangial conceptacle bearing a zonately divided tetrasporangium (t) (SAP 115697). Scale bar = 50 μm. Fig. 26. Vertical fracture through a protuberance showing buried conceptacles (arrowheads) (SAP 115696). Scale bar = 500 μm. Fig. 27. Vertical section through the thallus showing a buried tetrasporangial conceptacle with tetrasporangia (t) and infilled vegetative cells (arrows) (SAP 115693). Scale bar = 100 μm.	Figs. 16–27. Tetra/bisporangial conceptacle characters of Roseolithon sabulosum sp. nov. Fig. 16. Surface view showing raised multiporate tetra/bisporangial conceptacles (arrows) (SAP 115691). Scale bar = 500 μm. Fig. 17. Surface view of a raised multiporate tetra/bisporangial conceptacle without differentiation into a peripheral rim and pore plate with depressed rosette cells giving the conceptacle pore plate a pitted appearance (arrows) (SAP 115698). Scale bar = 200 μm. Fig. 18. Vertical fracture through a protuberance showing multiporate tetra/bisporangial conceptacles more or less flush with (arrow) or raised above (double arrowhead) the surrounding thallus surface (SAP 115697). Scale bar = 100 μm. Fig. 19. Surface view showing multiporate tetra/bisporangial conceptacles surrounded by raised vegetative rims (arrows) (SAP 115693). Scale bar = 500 μm. Fig. 20. Surface view of multiporate tetra/bisporangial conceptacles undergoing an enveloping process by the overgrowth of peripheral vegetative rims (arrows) giving conceptacles a volcano-like appearance (SAP 115693). Scale bar = 100 μm. Fig. 21. Vertical fracture through an old multiporate tetra/bisporangial conceptacle about to be fully enveloped due to continuous overgrowth by peripheral vegetative filaments (arrows) (SAP 115698). Scale bar = 100 μm. Fig. 22. Vertical fracture through a recently buried tetra/bisporangial conceptacle as a result of the complete overgrowth by peripheral vegetative filaments (arrow) (SAP 115700). Scale bar = 100 μm. Fig. 23. Surface view of a tetrasporangial conceptacle pore plate with rosette cells in depressions (arrowheads) giving the conceptacle pore plate a pitted appearance (SAP 115698). Scale bar = 50 μm. Inset: Detail of a pore opening (asterisk) bordered by seven rosette cells (1–7) (SAP 115694). Scale bar = 10 μm. Fig. 24. Vertical section through a multiporate tetra/bisporangial conceptacle roof with apical plugs (asterisks) occluding the pore canals, lined by disintegrated rosette cells (arrows) and underlying wedge-shaped pore canal cells (w) (SAP 115691). Scale bar = 50 μm. Fig. 25. Vertical fracture through a mature multiporate tetrasporangial conceptacle bearing a zonately divided tetrasporangium (t) (SAP 115697). Scale bar = 50 μm. Fig. 26. Vertical fracture through a protuberance showing buried conceptacles (arrowheads) (SAP 115696). Scale bar = 500 μm. Fig. 27. Vertical section through the thallus showing a buried tetrasporangial conceptacle with tetrasporangia (t) and infilled vegetative cells (arrows) (SAP 115693). Scale bar = 100 μm.	2024-11-25	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke		Zenodo	biologists	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke			
03DD87C1FFD2FF80D15EB006D99D3DD0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15520576/files/figure.png	https://doi.org/10.5281/zenodo.15520576	Figs. 28–30. Carpogonial conceptacle characters of Roseolithon sabulosum sp. nov. Fig. 28. Surface view showing mounded uniporate carpogonial conceptacles (arrows) (SAP 115699). Scale bar = 1 mm. Fig. 29. Vertical section through a young carpogonial conceptacle showing an elliptical chamber (SAP 115699). Scale bar = 100 μm. Fig. 30. Magnified view of the floor of a young carpogonial conceptacle showing carpogonial branches composed of a supporting cell (su), a hypogynous cell (hy) and a carpogonium (ca) extended into an elongated trichogyne (tr) (SAP 115699). Scale bar = 50 μm.	Figs. 28–30. Carpogonial conceptacle characters of Roseolithon sabulosum sp. nov. Fig. 28. Surface view showing mounded uniporate carpogonial conceptacles (arrows) (SAP 115699). Scale bar = 1 mm. Fig. 29. Vertical section through a young carpogonial conceptacle showing an elliptical chamber (SAP 115699). Scale bar = 100 μm. Fig. 30. Magnified view of the floor of a young carpogonial conceptacle showing carpogonial branches composed of a supporting cell (su), a hypogynous cell (hy) and a carpogonium (ca) extended into an elongated trichogyne (tr) (SAP 115699). Scale bar = 50 μm.	2024-11-25	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke		Zenodo	biologists	Kato, Aki;Adachi, Kenta;Iryu, Yasufumi;Baba, Masasuke			
