Results 11 to 20 of about 764,512 (304)

Harnessing Large-Scale Herbarium Image Datasets Through Representation Learning

Frontiers in Plant Science, 2022
The mobilization of large-scale datasets of specimen images and metadata through herbarium digitization provide a rich environment for the application and development of machine learning techniques.
Barnaby E. Walker, Allan Tucker, Nicky Nicolson   +2 more
doaj   +1 more source

The Herbarium 2021 Half–Earth Challenge Dataset and Machine Learning Competition

Frontiers in Plant Science, 2022
Herbarium sheets present a unique view of the world's botanical history, evolution, and biodiversity. This makes them an all–important data source for botanical research. With the increased digitization of herbaria worldwide and advances in the domain of
Riccardo de Lutio, John Y. Park, Kimberly A. Watson, Stefano D'Aronco, Jan D. Wegner, Jan D. Wegner, Jan J. Wieringa, Melissa Tulig, Richard L. Pyle, Timothy J. Gallaher, Gillian Brown, Gordon Guymer, Andrew Franks, Dhahara Ranatunga, Yumiko Baba, Serge J. Belongie, Fabián A. Michelangeli, Barbara A. Ambrose, Damon P. Little   +18 more
doaj   +1 more source

Lectotypification of the name Stereodon nemoralis Mitt. (Plagiotheciaceae), a basionym of Plagiothecium nemorale (Mitt.) A. Jaeger [PDF]

PhytoKeys, 2020
In 1859, William Mitten described Stereodon nemoralis (≡ Plagiothecium nemorale) based on the gathering of Sir J.D. Hooker from India. However, the protologue did not indicate any specific specimen or illustration.
Grzegorz J. Wolski, Anna Faltyn-Parzymska, Jarosław Proćków   +2 more
doaj   +3 more sources

Typification of 14 names in the Dianthus virgineus group (Caryophyllaceae) [PDF]

PhytoKeys, 2021
The nomenclature of 14 taxa from Central and Southern Europe within the Dianthus virgineus group is discussed. Dianthus aggericola Jord., D. collivagus Jord., D. consimilis Jord., D. orophilus Jord., D. saxicola Jord., D. juratensis Jord.
Gianniantonio Domina, Giovanni Astuti, Gianluigi Bacchetta, Giulio Barone, Ivana Rešetnik, Ana Terlević, Melanie Thiébaut, Lorenzo Peruzzi   +7 more
doaj   +3 more sources

refloraR: An R package for efficiently retrieving and analyzing plant specimen data from the Herbário Virtual Reflora. [PDF]

Appl Plant Sci
Abstract Premise Advances in the digitization of herbarium collections are enabling open access to specimen data for research and conservation. In Brazil, the Herbário Virtual Reflora (HVR) hosts over 4.8 million high‐resolution images of botanical specimens and their associated data from 86 national and international herbaria.
Calderón Del Cid C, Versiane AFA, Leitman P, Filardi FR, Forzza RC, Cardoso D.   +5 more
europepmc   +2 more sources

Protection of Herbarium Specimens [PDF]

Nature, 1932
THE letter from Messrs. F. K. Jackson and R. L. M. Ghose1 on the protection of herbarium specimens makes a valuable suggestion. Perhaps I may be permitted to refer readers and others interested in the subject to a paper on the “Preservation of Herbarium Specimens and Insects on Celluloid”, by Mr.
F. K. JACKSON, R. L. M. GHOSE
openaire   +2 more sources

Lectotypification of Plagiothecium mauiense, a Hawaiian synonym of Plagiothecium longisetum (Plagiotheciaceae) [PDF]

PhytoKeys, 2021
In 2020, Plagiothecium mauiense Broth. was recognised as a synonym of P. longisetum Lindb.; however, due to the inability to compare all known original material, the conducted taxonomic analysis was not completed with lectotypification of the name ...
Grzegorz J. Wolski, Jarosław Proćków
doaj   +3 more sources

Petal to the metal: The slow road to automating large-scale phenology labeling for herbarium specimens. [PDF]

Appl Plant Sci
Abstract Premise Herbarium specimens represent critical historical records of plant phenology, yet automating annotation of reproductive structures remains challenging given the diversity of floral morphologies, specimen age and quality, and image quality.
Grady EL, LaFrance R, Li D, Dinnage R, Denny EG, Deck J, Guralnick RP.   +6 more
europepmc   +2 more sources

A comparison of freezer‐stored DNA and herbarium tissue samples for chloroplast assembly and genome skimming

Applications in Plant Sciences, 2023
Premise The use of DNA from herbarium specimens is an increasingly important source for evolutionary studies in plant biology, particularly in cases where species are rare or difficult to obtain.
Edward V. McAssey, Cassidy Downs, Mitsuko Yorkston, Clifford Morden, Karolina Heyduk   +4 more
doaj   +1 more source

A basic ddRADseq two‐enzyme protocol performs well with herbarium and silica‐dried tissues across four genera

Applications in Plant Sciences, 2020
Premise The ability to sequence genome‐scale data from herbarium specimens would allow for the economical development of data sets with broad taxonomic and geographic sampling that would otherwise not be possible. Here, we evaluate the utility of a basic
Ingrid E. Jordon‐Thaden, James B. Beck, Catherine A. Rushworth, Michael D. Windham, Nicolas Diaz, Jason T. Cantley, Christopher T. Martine, Carl J. Rothfels   +7 more
doaj   +1 more source