Results 41 to 50 of about 2,327 (226)

Data Capture and Taxonomic Determination of Cycadales at the Royal Botanic Garden Edinburgh

Sibbaldia, 2010
This paper discusses a curatorial review of the Cycadales in the Living Collection at the Royal Botanic Garden Edinburgh (RBGE) following the methodology described by Frachon et al. (2009).
James Clugston
doaj   +1 more source

G-fibers and Florin ring-like structures in Dioon (Zamiaceae)

Botan‪ical Sciences, 2016
Cuticle information and epidermal characters have great potential in systematic studies.  However, micromorphology and anatomical studies on cycads are relatively scarce in comparison to similar studies on other gymnosperms.
Andrew P. Vovides, Sonia Galicia
doaj   +1 more source

CLIMATIC CHANGES MAY NOT AFFECT THE DISTRIBUTION RANGE OF SOUTH AFRICAN ENDEMIC ENCEPHALARTOS SPECIES (CYCADALES)

Contribuţii Botanice, 2022
In recent decades climate change has emerged as one of the major forces driving biodiversity loss and species extinction. Cycads are highly threatened species and previous studies have revealed they are also being affected by climate change.
S. O. Bamigboye, Peter M. Tshisikhawe
semanticscholar   +1 more source

MIDDLE JURASSIC FLORA FROM THE HOJEDK FORMATION OF TABAS, CENTRAL EAST IRAN: BIOSTRATIGRAPHY AND PALAEOCLIMATE IMPLICATIONS

Rivista Italiana di Paleontologia e Stratigrafia, 2018
The Middle Jurassic deposits of the Shemshak Group and Hojedk Formation are widespread in North, Central, and Central East Iran. In this paper, the Hojedk Formation in South Kouchekali, southwestern Tabas city, east-central Iran was studied for ...
FATEMEH VAEZ-JAVADI
doaj   +1 more source

A quantitative comparison of dispersed spore/pollen and plant megafossil assemblages from a Middle Jurassic plant bed from Yorkshire, UK [PDF]

, 2015
Detailed quantitative data has previously been collected from plant megafossil assemblages from a Middle Jurassic (Aalenian) plant bed from Hasty Bank, North Yorkshire, UK.
Bhowmik, Boulter, Chaloner, Chaloner, Charles H. Wellman, Couper, Cox, Crane, Dettmann, Filatoff, Gedl, Gray, Hammer, Hammer, Hancock, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Hemingway, Hill, Hill, Hubbard, Klavins, Legendre, Levin, Lindley, Nami, Norstog, Parry, Picket, Sam M. Slater, Scheihing, Schweitzer, Traverse, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, Wilson, Ziaja   +46 more
core   +3 more sources

Historia natural de Dioon Merolae (Zamiaceae)en Chiapas, México

Botan‪ical Sciences, 2012
Se recopilan observaciones sobre la espadaña (Dioon merolae, Zamiaceae) de la Depresión Central (530-600 m) y de la Sierra Madre de Chiapas (1,100-1,200 m).
Julia Manuela Lázaro-Zermeño, Mario González-Espinosa, Ana Mendoza, Miguel Martínez-Ramos   +3 more
doaj   +1 more source

Paleogeographic and litho-facies formation conditions of MidUpper Jurassic sediments in S-E Western Siberia (Tomsk Oblast) [PDF]

, 2016
This paper describes the criteria to identify Tumen (lower Bathonian) and Naunak (upper Bathonian-Callovian- Oxfordian) suites within S-E Western Siberia (Tomsk Oblast).
Rychkova, Irina Vladimirovna, Shaminova, Marina Ivanovna, Sterzhanova, Ju.   +2 more
core   +1 more source

The need for multidisciplinary conservation: a case study of Ceratozamia (Zamiaceae, Cycadales) in eastern Mexico

Oryx, 2021
As an evolutionary lineage cycads are rare, and the extinction risk is high for many species. The genus Ceratozamia, one of the most diverse in Mexico, is experiencing drastic reductions of its habitat.
L. Martínez-Domínguez, Fernando Nicolalde‐Morejón, D. Stevenson, Quiyari J. Santiago-Jiménez, Octavio R. Rojas-Soto, Francisco Vergara-Silva   +5 more
semanticscholar   +1 more source

Publishing trends for the Cycadales, the most threatened plant group

Journal of Threatened Taxa, 2016
Trends in published cycad research within various fields of study were determined using proceedings from international conferences on cycad biology and Google Scholar to access the primary literature.
April N. Cascasan, Thomas E. Marler
doaj   +1 more source

Intraspecific chromosome variation inZamia(Zamiaceae, Cycadales) [PDF]

Caryologia, 1991
SUMMARYIntraspecific chromosome variation in three species of Zamia (Zamiaceae, Cycadales) from Mexico and Belize is reported. Zamia fischeri has 2n = 16 and 18, Z. picta has 2n = 21 and 22, and Zamia sp. nov. has 2n = 22 and 26. All cytotypes have two submetacentric and two acrocentric chromosomes but differ in number of metacentric and telocentric ...
A. MORETTI, P. CAPUTO, GAUDIO, LUCIANO, D. W. S. STEVENSON   +3 more
openaire   +2 more sources