Results 11 to 20 of about 5,499 (223)

Ploidy levels and reproductive behaviour in invasive Hieracium pilosella in Patagonia [PDF]

open access: yesNeoBiota, 2011
Within a population of invasive Hieracium pilosella in Chilean Patagonia we found two ploidy levels, pentaploid and hexaploid. Each ploidy level was represented by one clone.
František Krahulec, Anna Krahulcova
doaj   +2 more sources

Hieracium

open access: yes, 2007
Hieracium sprengerianum Linnaeus, Species Plantarum 2: 804. 1753. "Habitat in Lusitania." RCN: 5874. Lectotype (Alavi in Jafri & El-Gadi, Fl. Libya 107: 359. 1983): Herb. Linn. No. 954.44 (LINN). Current name: Hieracium sp. (Asteraceae).
Jarvis, Charlie
core   +4 more sources

Aportaciones al conocimiento del género Hieracium L. en España, XVI [Studies on the genus Hieracium L. in Spain, XVI] [PDF]

open access: yesFlora Montiberica, 2013
RESUMEN: Se proponen varias novedades peninsulares en el género Hieracium L. (Compositae) así como una nueva reestructuración del complejo grupo de H. loscosianum Scheele. ABSTRACT: Studies on the genus Hieracium L. in Spain, XVI.
Gonzalo Mateo Sanz
doaj   +1 more source

Pollination Under Pressure: Grazing and Nutrient Enrichment Reshape Arctic Pollinator Communities and Interaction Networks. [PDF]

open access: yesGlob Chang Biol
Grazing exclusion reshaped Arctic flower‐visitor communities, increased plant‐pollinator interactions, and altered interaction networks, while nutrient enrichment had weaker, context‐dependent effects. Together the two drivers produced both independent and interactive effects, with tundra grasslands showing the greatest sensitivity to environmental ...
Johanson N   +5 more
europepmc   +2 more sources

Dietary Overlap of Sympatric Polyphagous Alpine Grasshoppers Includes Invasive Plant Species. [PDF]

open access: yesEcol Evol
The diets of three sympatric grasshopper species were compared using mandible morphological analysis, microhistological examination, and DNA metabarcoding of gut contents. Although mandible morphology differed across species and sexes, dietary divergence was not evident.
Nakano M   +3 more
europepmc   +2 more sources

What we learn from weed genetics. [PDF]

open access: yesAm J Bot
American Journal of Botany, Volume 113, Issue 4, April 2026.
VanWallendael A.
europepmc   +2 more sources

Molecular Evolution and Organization of Ribosomal DNA in the Hawkweed Tribe Hieraciinae (Cichorieae, Asteraceae)

open access: yesFrontiers in Plant Science, 2021
Molecular evolution of ribosomal DNA can be highly dynamic. Hundreds to thousands of copies in the genome are subject to concerted evolution, which homogenizes sequence variants to different degrees.
Judith Fehrer   +7 more
doaj   +1 more source

Onshore Wind Energy Development Causes Localized but Lasting Shifts in Plant Community Composition and Function. [PDF]

open access: yesEcol Evol
The effects of wind power plants on surrounding vegetation remain poorly understood. Vegetation surveys at three Norwegian wind power plants commissioned 4, 12, and 19 years ago showed that roads caused shifts in plant functional strategies toward species with ruderal strategies.
Seifert L   +5 more
europepmc   +2 more sources

Hieracium

open access: yes, 2022
The Hieracium collection The status of Tessendorff’s Hieracium collection now located in the backlog of the Botanical Museum Berlin is unclear because it does not appear in the herbarium records and the specimens do not bear any information concerning their acquisition.
Vogt, Robert, Gottschlich, Günter
openaire   +2 more sources

Ястребинки плато Путорана

open access: yesTurczaninowia, 2021
Приводится обзор всех видов Hieracium L. (ястребинка), зарегистрированных на плато Путорана. В перечень флористических находок на территории плато включены три новых вида (Hieracium czamyjashense Tupitz., H.
Наталья Николаевна Тупицына   +1 more
doaj   +1 more source

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