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1,998 results for “Herbarium specimen”
FIG.1 in Three new species of Solanum from Kenya: using herbarium specimens to document environmental change.
FIG.1. Distribution of the three new species in Kenya and Tanzania. A. Solanum polhillii Voronts. sp. nov. B. Solanum phoxocarpum Voronts. sp. nov. C. Solanum malindiense Voronts. sp. nov. Collecting localities not visited are marked as black triangles. Collecting localities visited where the plants were not found are marked as red circles. Collecting localities visited where the plants were found are marked as green squares. Drawn by Paweł Ficinski.
FIG.4 in Three new species of Solanum from Kenya: using herbarium specimens to document environmental change.
FIG.4. Solanum malindiense Voronts. sp. nov. A. Habit in flower. B. Habit in fruit. C. Underside of leaf showing stellate trichomes. D. Stellate trichome. E. Flower. F. Flower and calyx. G. Seed. A, E, Fdrawn from field photographs, B, C, D, Gdrawn from herbarium specimens. Afrom Vorontsova et al. 115. B, C, D from Luke 10326K. E, Ffrom Vorontsova et al. 112. Gfrom Jeffery K415. Scale bar: A = 1.5 cm; B = 2 cm; C, G = 2.5 mm; D = 0.5 mm; E, F = 1 cm. Drawn by Lucy T. Smith.
FIG.3 in Three new species of Solanum from Kenya: using herbarium specimens to document environmental change.
FIG.3. Solanum phoxocarpum Voronts. sp. nov. A. Habit in flower. B. Flower. C. Flower and calyx. D. Underside of the leaf. E. Underside of leaf showing stellate trichomes. F. Stellate trichome. G. Habit in fruit. H. Fruit, longitudinal cross section. I. Seed. A, B, C, H drawn from field photographs of Vorontsova et al. 29. D, E, F, G drawn from herbarium specimen Verdcourt 3725. Idrawn from herbarium specimen Frame 229. Scale bar: A = 2 cm; B, C, D, H = 3 cm; E, I = 2.5 mm; F = 0.5 mm; G = 2.5 cm. Drawn by Lucy T. Smith.
FIGURE 1 in Type specimens of vascular plants in the herbarium of the National Institute of Biological Resources (II)
FIGURE 1. Type specimens in the herbarium of the National Institute of Biological Resources. 1. Asplenium ×bimixtum, 2. Asplenium ×uiryeongse, 3. Anemone pendulisepala, 4. Broussonetia ×hanjiana, 5. Pseudostellaria baekdusanensis, 6. Pseudostellaria ×bohyeonsanensis, 7. Pseudostellaria palibiniana var. gageodoensis, 8. Pseudostellaria ×segeolsanensis, 9. Viola breviflora.
FIGURE. Drosera hirtella: a, specimen Saint-Hilaire B1-1762bis (P00749158), with the designated lectotype highlighted; b, detail of the lectotype, showing the ascending scape and leaves with obovate lamina; c, detail of the individual to the left of the lectotype, representing the "western morphotype", with narrowly obovate lamina. Image extracted from A. de Saint-Hilaire virtual herbarium (2020). in A synopsis of the genus Drosera (Droseraceae) in Brazil
FIGURE. Drosera hirtella: a, specimen Saint-Hilaire B1-1762bis (P00749158), with the designated lectotype highlighted; b, detail of the lectotype, showing the ascending scape and leaves with obovate lamina; c, detail of the individual to the left of the lectotype, representing the "western morphotype", with narrowly obovate lamina. Image extracted from A. de Saint-Hilaire virtual herbarium (2020).
Spatiotemporal monitoring of the rare Northern dragonhead, Dracocephalum ruyschiana (Lamiaceae): SNP genotyping and environmental niche modelling herbarium specimens
<p><strong>Aim: </strong>We have studied spatiotemporal genetic change in the Northern dragonhead, a plant species that has experienced a drastic population decline and habitat loss in Europe. We add a temporal perspective to the monitoring of dragonhead in Norway by genotyping herbarium specimens up to 200 years old. We also assess whether dragonhead has achieved its potential distribution in Norway. Location: Europe (mainly Norway)</p> <p><strong>Methods:</strong> We have applied a microfluidic array consisting of 96 SNP markers on 130 herbarium specimens collected from 1820 to 2008, mainly from Norway (83) but also beyond (47). We have compared our new genotype data with existing data from modern samples. We have modelled the species' environmental niche and potential distribution in Norway using sample metadata and observational records.</p> <p><strong>Results: </strong>The SNP array successfully genotyped all included herbarium specimens. The captured genetic diversity was negatively correlated with distance from Norway. The historical-modern comparison revealed similar genetic structure and diversity across space and limited genetic change through time in Norway. The ENM suggests that dragonhead is anchored in warmer and drier habitats.</p> <p><strong>Main conclusions: </strong>With appropriate design procedures, the SNP array technology is promising for genotyping old herbarium specimens. We found no signs of any regional bottleneck. The regional areas in Norway have remained genetically divergent, however, both from each other and more so from populations outside of Norway, rendering continued protection of the species in Norway relevant. The ENM suggests that dragonhead has not fully achieved its potential distribution in Norway.</p>
FIGURE. Records of herbarium specimens of Orchidaceae in Honduras. Departments of Honduras:Atlántida (1), Colón (2), Comayagua (3), Cortés (5), Francisco Morazán (8), Gracias a Dios (9), Olancho (15), Santa Bárbara (16), Valle (17), Yoro (18). in An Updated Checklist of the Orchidaceae of Honduras
FIGURE. Records of herbarium specimens of Orchidaceae in Honduras. Departments of Honduras:Atlántida (1), Colón (2), Comayagua (3), Cortés (5), Francisco Morazán (8), Gracias a Dios (9), Olancho (15), Santa Bárbara (16), Valle (17), Yoro (18).
Specimen Images from Herbarium of Abraham Halsey (BKL)
<p>This deposition consists of a zipped folder containing individually numbered photographs of specimens contained in the Abraham Halsey lichen collection of the Brooklyn Botanic Garden (BKL) in New York City. </p>
Herbarium specimen image of Croton verbenifolia Muell.Arg., part of the collection of Botanic Garden and Botanical Museum Berlin
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- A lossless TIFF image from which the JPEG image has been derived.
Figure 2 in Herbarium specimens reveal the exchange network of British and Irish botanists, 1856-1932
Figure 2 An example of the network of botanical exchanges. Square nodes represent women. Red nodes are members of the Watson Botanical Exchange Club. Blue nodes are members of the Botanical Exchange Club. Purple nodes are members of both clubs. The node's area is proportion to the number of specimens collected by that collector during the period. The width of the link is proportional to the number of links between those two nodes. (A) The whole network. (B) Detail of the centre of the network. The network was laid out using the Harel–Koren Fast Multiscale algorithm.
Figure 4 A in Herbarium specimens reveal the exchange network of British and Irish botanists, 1856-1932
Figure 4 A histogram showing the proportions of men and women in the network who have different numbers of links.
Figure 3 in Herbarium specimens reveal the exchange network of British and Irish botanists, 1856-1932
Figure 3 Change in the network parameters with time. The bottom chart plots the history of the national botanical clubs of the period. The terms of the secretaries of the Botanical Exchange Club are marked. Abbreviations: JB — J.G. Baker, HT — H. Trimen.
Royal Botanic Garden Edinburgh: RBGE Herbarium Specimen Images
Plant biodiversity data from the Royal Botanic Garden Edinburgh, UK. <p></p>http://www.rbge.org.uk
FIGURE 13 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 13. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: ZH0007). A—Curly bubbled thalli with macroscopic branching (arrows), B—surface of a thallus with crystals of calcium carbonate (arrow), C—part of the thallus with a visible single layer of cells (arrows), D—initial cells of the branch, surrounded by neighbouring cells (arrows), E—crystals of CaCO 3 (arrow), F—cells with 1–2 pyrenoids (arrows), G—thick cells with cup-shaped chromatophores (arrow).
FIGURE 10 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 10. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: WA0000019414). A—Filamentous (arrow) and wide thalli from herbarium sheet, B—branching (arrows) in the basal part of the thallus, C—monolayer of the cell (arrow), D—irregularly arranged cells with poorly stained pyrenoids (1–2 per cell) (arrows), E—thin-walled cells (arrow) in the branching of thalli, F—initial cell (arrow) of uniseriate proliferation, G—thin-walled and slightly rounded apical cell (arrow) of a single branch.
FIGURE 5 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 5. Dendrogram rerived from Ward's method using Manhattan distance of morphometrical parameters of inland Ulva (n = 160; used 10 measurements of each specimen). Cluster A—Ulva flexuosas. subsp. paradoxa, clusters B and C—U. flexuosa subsp. pilifera, Ulva cf. flexuosa and Ulva sp.
FIGURE 4 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 4. Ulva cf. flexuosa (Voucher code: ZH0004). A—Thallus from herbarium sheet, B and C—strong mineral incrustation on the thallic surface, D—irregular arrangement of cells with wide walls, E—Lugol's iodine stained organelles in area of chromatophore, F—increased initial cell of monoserrate proliferation.
FIGURE 3 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 3. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: ZH0003). A—Filamentous and tubular thalli, B—single tubular thalli, C—mineral incrustation on surface of thalli, D—irregular arrangement of cells, E—cells with 2–4 pyrenoids, F—formation of proliferations from swollen cell.
FIGURE 14 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 14. Ulva flexuosa subsp. pilifera (Kützing) M.J. Wynne (Voucher code: ZH0008). A—Intestinally undulating thallus (arrow)from herbarium sheet, B—numerous branching of thalli (arrows), C—single branching of the thallus (arrow), D—numerous uniseriate proliferation (arrows), E—cells with cup-shaped chromatophores, containing 2 – 5 pyrenoids (arrows), F and G—tapered apical cells (arrows) of uniseriate branching with visible pyrenoids.
FIGURE 18 in Revision of herbarium specimens of freshwater Enteromorpha-like Ulva (Ulvaceae, Chlorophyta) collected from Central Europe during the years 1849-1959
FIGURE 18. Ulva sp. (Voucher code: ZH0012). A—Thallus from herbarium sheet, B—strongly corrugated and often highly furcated thallus without incrustation, C and D—irregular arrangement of cells (arrows), E and F—cup-shaped chromatophores with single pyrenoids (arrows).
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