Results 51 to 60 of about 2,072 (192)

Floristic changes in the Iberian Peninsula and Balearic Islands (south-west Europe) during the Cenozoic [PDF]

open access: yes, 2009
AIM  The aim of this work was to identify the main changes in the flora and vegetation of the Iberian Peninsula over the Cenozoic Era, to record the disappearance of taxa associated with these changes and to determine the influence of climate and human ...
Barrón López, Eduardo   +3 more
core   +2 more sources

Is Cycas revoluta (Cycadaceae) wind‐ or insect‐pollinated? [PDF]

open access: yesAmerican Journal of Botany, 2007
Among the Cycadales (Cycadaceae and Zamiaceae), the Zamiaceae are known to be insect‐pollinated. In contrast, the Cycadaceae are still considered wind‐pollinated, although some doubt has been cast on several species, including Cycas revoluta. Using a large population of C. revoluta on Yonaguni Island (Okinawa, Japan), we performed exclusion experiments,
Masumi, Kono, Hiroshi, Tobe
openaire   +2 more sources

Taxonomic aspects and coning ecology of Cycas circinalis L. (Cycadales: Cycadaceae), a threatened species of India

open access: yesJournal of Threatened Taxa, 2011
Cycas circinalis is Red Listed Endangered species. It is a tropical dry deciduous dioecious shrub confined to the Western Ghats and its adjacent regions. It reproduces asexually and sexually.
A.J.S. Raju, N.G. Rao
doaj   +1 more source

A New Species of Cycas (Cycadaceae) from the Philippines [PDF]

open access: yesBlumea - Biodiversity, Evolution and Biogeography of Plants, 2005
A new species, Cycas zambalensis Madulid & Agoo, is described from an ultrabasic hilly grassland in Zambales, Luzon Island, Philippines.
Madulid, D.A., Agoo, E.M.G.
openaire   +2 more sources

Early evolutionary history of the seed

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman   +2 more
wiley   +1 more source

Chemical Element Concentrations of Cycad Leaves: Do We Know Enough?

open access: yesHorticulturae, 2020
The literature containing which chemical elements are found in cycad leaves was reviewed to determine the range in values of concentrations reported for essential and beneficial elements.
Benjamin E. Deloso   +5 more
doaj   +1 more source

Spatial Distribution and Conservation Prioritization of Medicinal Gymnosperms in China Using an Optimal Set‐Cover Approach

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
The study identified 41 priority conservation grids and 8 critical conservation gaps not covered by national reserves for medicinal gymnosperms. We proposed a practical, multi‐dimensional framework for their conservation. ABSTRACT To elucidate the geographical distribution patterns and hotspots of medicinal gymnosperms in China, providing a scientific ...
Lisi Hai   +8 more
wiley   +1 more source

Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations

open access: yesPlant Diversity, 2017
Geological activities and climate oscillations during the Quaternary period profoundly impacted the distribution of species in Southwest China. Some plant species may be harbored in refugia, such as the dry-hot valleys of Southwest China. Cycas chenii X.
Rui Yang, Xiuyan Feng, Xun Gong
doaj   +1 more source

A new species of the genus Trichagalma Mayr from China (Hym.: Cynipidae) [PDF]

open access: yes, 2012
A new species of oak gallwasp, Trichagalma glabrosa Pujade-Villar is described from Eastern China (province of Henan), known to induce galls on Quercus variabilis Blume. Only asexual females are known.
Pujade, Juli,, Wang, Jingshun
core   +1 more source

The genus Cycas (Cycadaceae) in India

open access: yesTelopea, 2007
The genus Cycas is reviewed for India. Eight species are treated, one of them published for the first time (Cycas indica). The species are placed within an infrageneric classification previously outlined. Distributions of all taxa are mapped, and a key to species is provided.
Anders Lindstrom, Kenneth Hill
openaire   +1 more source

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