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1,153 results for “Fern”
FIGURE 1 in Taxonomic novelties in grammitid ferns (Polypodiaceae) from the Neotropics and Madagascar supported by molecular data
FIGURE 1. The phylogenetic position of newly sequenced samples of Neotropical grammatid ferns (indicated as bold text) shown at the best maximum likelihood (ML) tree of the combined six cpDNA loci dataset. Bootstrap support (BS) values from ML and posterior probability (PP) from Bayesian inference analysis are indicated as numbers above nodes. Dots represent nodes with BS>70 or PP>0.9. "-" indicates absence of node in the consensus topology in Bayesian inference. Clades included in taxonomic treatment are indicated on the right.
FIGURE 2. Pteris blumeana Agardh. A in A new fern species Pteris subiriana (Pteridaceae) from India
FIGURE 2. Pteris blumeana Agardh. A. Herbarium; B. Venation; C. Rhizome scales; D. Cells of pseudoindusium; E. Sporangium.
FIGURE 1 in A new fern species Pteris subiriana (Pteridaceae) from India
FIGURE 1. Pteris subiriana Piu Das, sp. nov. A. Habit; B. Setae above the costules; C. Venation; D, D1, D2. Rhizome scales; E. Rhizome; F, G. Parts of pseudoindusium; H. Sporangium.
FIGURE 3 in A new fern species Pteris subiriana (Pteridaceae) from India
FIGURE 3. SEM micrographs of spores of in proximal View and distal View: A–B: Pteris subiriana. C–D: Pteris blumeana.
FIGURE 2. Crepidomanes shenzhenense.—A. Habit.—B in Crepidomanes shenzhenense (subg. Crepidomanes; Hymenophyllaceae), a new filmy fern species from Guangdong, southern China
FIGURE 2. Crepidomanes shenzhenense.—A. Habit.—B. Portion of ultimate segment showing internal false veinlets and retused apex.— C. Internal false veinlets.—D. Hairs on the stipe.—E. Sorus with sporangia.—F. Sorus without sporangia. (Drown by Cui Ding-han based on holotype)
FIGURE 1. Crepidomanes shenzhenense.—A–B in Crepidomanes shenzhenense (subg. Crepidomanes; Hymenophyllaceae), a new filmy fern species from Guangdong, southern China
FIGURE 1. Crepidomanes shenzhenense.—A–B. Habits of the new species in situ.—C. Fronds with sori.—D–F. Sori from different individuals.—F. Internal false veinlets.—H. Portion of stipe showing hairs.
FIGURE 2 in A new fern species of Christella (Thelypteridaceae) from India
FIGURE 2. Christella kendujharensis: A. Habit; B. A portion of the frond; C. Rhizome; D. An enlarge view of the pinnules; E. Scale of the rhizome; F. Acicular hair; G. Chromosomes; H. A sporangium; I. Single spore.
FIGURE 1. Woodsia kungiana.—A. Habit.—B in Woodsia kungiana sp. nov. (Woodsiaceae), a new fern from Sichuan, China
FIGURE 1. Woodsia kungiana.—A. Habit.—B. Frond, abaxial view.—C. Frond, adaxial view.—D. Creeping rhizome.—E. Portion of stipe showing indumentum.—F. Broken parts of stipes.—G. Lowest pinna.—H. Lower stipe scales.—I. Upper stipe scales.—J. Pinnae showing sparse articulate hairs.—K. Serrated, cup-like indusia.—L. Portion of pinna showing exindusiate sori.—M. Portions of laminae showing indumentum and sori.
FIGURE 2. Polystichum recavum H.J. Wei & Li Bing Zhang.—A in Polystichum recavum (subg. Haplopolystichum; Dryopteridaceae), a new cave fern from Guangxi, China
FIGURE 2. Polystichum recavum H.J. Wei & Li Bing Zhang.—A. Outside view of the cave where the new species was discovered.—B, C. Habitat inside the cave.—D. Habit in the field.—E. Adaxial views of laminae.—F. Abaxial view of lamina.—G. Portion of abaxial surface of pinna.—H. Scales from stipes (a–c), rachis (d, e), and pinna surface (f, g).
FIGURE 3 in Three new species of the fern genus Arachniodes (Dryopteridaceae) from Vietnam
FIGURE 3. The morphology of scales, spores, and indusia. A–C, H, I & L. Arachniodes quangnamensis.—A. Rhizome scales.—B. Scales from stipe base.—C. Scales from distal portion of stipe.—H & I. SEM photographs of spores.—L. Ciliate indusia. D, E, J, K & N. A. longicaudata.—D. Scales from stipe base.—E. Scales from distal portion of stipe.—J & K. SEM photographs of spores.—N. Indusia with long and hairlike ciliate. F, G & M. A. daklakensis.—F. Scales from stipe base.—G. Scales from distal portion of stipe.—M. Indusia with long and hairlike ciliate.
FIGURE 1. A–H. Arachniodes quangnamensis Li Bing Zhang, N.T in Three new species of the fern genus Arachniodes (Dryopteridaceae) from Vietnam
FIGURE 1. A–H. Arachniodes quangnamensis Li Bing Zhang, N.T. Lu & Liang Zhang,—A & B. Habit.—C. Sterile frond.—D. Lower portion of plant.—E. Fertile frond.—F. Portion of frond showing basal pinnae.—G. Portion of rachis and pinna.—H. Portion of pinnule showing sori and microscales. J–P. A. daklakensis Li Bing Zhang, N.T. Lu & X.M.Zhou.—J. Fronds.—K & M. Lowest pinnae.—L. Stipe base.—N. Lamina apex.—O. Portions of lateral pinnae.—P. Portion of pinnule showing sori.
FIGURE 2. Arachniodes longicaudata Li Bing Zhang, N.T in Three new species of the fern genus Arachniodes (Dryopteridaceae) from Vietnam
FIGURE 2. Arachniodes longicaudata Li Bing Zhang, N.T. Lu & Liang Zhang.—A, D & E. Habit.—B. Lower portion of plant.—C. Stipe base.—F. Lamina showing lowest pinnae.—G. Frond.—H. Lamina apex.—J. Portion of pinnae.—K. Portion of pinnule showing marginal sori.
FIGURE 1. A–D in Prodromus of a fern flora for Bolivia. XXVI. Dennstaedtiaceae
FIGURE 1. A–D. Hypolepis woodii (Solomon 16418): A. Proximal pinna, B. Detail of petiole and rachis, abaxially, C. Ultimate pinnule, abaxially, D. Detail of veins, sori and pseuso-indusium, abaxially. E–G. Hypolepis periculosa (Kessler 12087): E. Detail of petiole and rachis, abaxially, F. Pinnule, abaxially, G. Detail of veins, sori and pseuso-indusium, abaxially.
FIGURE 3. A–C in Prodromus of a fern flora for Bolivia. XXVI. Dennstaedtiaceae
FIGURE 3. A–C. Pteridium esculentum subsp. gryphus (Gleason 423): A. Pinnule. B. Detail of ultimate segment, abaxially, showing sericeous veins. C. Cross section of ultimate segment, abaxial side up, showing the two types of hairs (gnarled hairs pointed by arrow).
FIGURE 2. A–D in Prodromus of a fern flora for Bolivia. XXVI. Dennstaedtiaceae
FIGURE 2. A–D. Hypolepis rigescens var. buchtienii (Buchtien 7014): A. Habit, B. Detail of petiole and rachis, abaxially, C. Pinnule, abaxially, D. Detail of veins, sori and pseuso-indusium, abaxially; E–H. Hypolepis minima (Jimenez 972): E. Habit, F. Detail of petiole, abaxially, G. Medial pinna, abaxially, H. Detail of veins, sori and pseuso-indusium, abaxially.
FIGURE 5. A–F in Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l. -Dennstaedtiaceae), based on morphology and geography
FIGURE 5. A–F. Pteridium esculentum subsp. arachnoideum var. paedomorficum: A. pinnae (Schwartsburd 3844), B. segment, abaxially (Schwartsburd 3844), C. segment, cross section, abaxial side up, showing sericeous veins, with with lax, arachnoid hairs, and glabrous laminar tissue between the veins (Schwartsburd 3844), D. segment, abaxially (Schwartsburd 3844), E. segment, cross section, abaxial side up, showing veins with setose hairs, and glabrous laminar tissue between the veins, F–H. Pteridium esculentum subsp. arachnoideum × P. esculentum subsp. campestre: F. pinnule (Fay 2413), G. segment, abaxially (Guedes 14217), H. segment, cross section, abaxial side up, showing strigose veins, with with stiff, acicular hairs, and laminar tissue between the veins with farinaceous appearance, fully covered by gnarled hairs (Guedes 14217). Drawn by R. Pinto.
FIGURE 4 in Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l. -Dennstaedtiaceae), based on morphology and geography
FIGURE 4. Distribution of Pteridium esculentum subsp. gryphus var. gryphus (blue circles) and P. esculentum subsp. gryphus var. harpianum (yellow circles) in South America.
FIGURE 1. A–C in Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l. -Dennstaedtiaceae), based on morphology and geography
FIGURE 1. A–C. Pteridium esculentum subsp. campestre: A. pinnule (Nonato 927), B. segment, abaxially (Schwartsburd 2411), C. segment, cross section, abaxial side up, showing strigose veins, with stiff, acicular hairs, and laminar tissue between the veins with farinaceous appearance, fully covered with gnarled hairs (Schwartsburd 2411), D–F. Pteridium esculentum subsp. arachnoideum var. arachnoideum: D. pinnule (Schwartsburd 2490), E. segment, abaxially (Schwartsburd 2490), F. segment, cross section, abaxial side up, showing serieceous veins, with lax, arachnoid hairs, and glabrous laminar tissue between the veins (Schwartsburd 2490). "s.d.s.": simple distal segments, "c.d.s.": compound distal segments. Drawn by R. Pinto, reproduced from Schwartsburd et al. (Phytotaxa 170(2): 105. 2014).
FIGURE 3. A–C in Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l. -Dennstaedtiaceae), based on morphology and geography
FIGURE 3. A–C. Pteridium esculentum subsp. gryphus var. gryphus: A. pinnule (Gleason 423), B. segment, abaxially (Gleason 423), C. segment, cross section, abaxial side up, showing sericeous veins, with lax, arachnoid hairs, and laminar tissue between the veins with farinaceous appearance, fully covered by gnarled hairs (Gleason 423), D–F. Pteridium esculentum subsp. gryphus var. harpianum: D. pinnule ("B.W." 1121 [US-2019769]), E. segment, abaxially (Barreto 1623), F. segment, cross section, abaxial side up, showing veins abaxially nearly glabrous, and laminar tissue between the veins with farinaceous appearance, fully covered by gnarled hairs (Barreto 1623). Drawn by R. Pinto.
FIGURE 2 in Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l. -Dennstaedtiaceae), based on morphology and geography
FIGURE 2. Distribution of Pteridium esculentum subsp. arachnoideum (red circles), P. esculentum subsp. campestre (green circles), and P. esculentum subsp. gryphus (blue circles) in South America.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.