Results 41 to 50 of about 1,837 (208)

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

Spatial and Seasonal Analysis of Phyllosphere Bacterial Communities of the Epiphytic Gymnosperm Zamia pseudoparasitica

Applied Biosciences
Phyllosphere microbial communities influence the growth and productivity of plants, particularly in epiphytic plants, which are disconnected from nutrients available in the soil. We characterized the phyllosphere of 30 individuals of the epiphytic cycad,
Lilisbeth Rodríguez-Castro, Adriel M. Sierra, Juan Carlos Villarreal Aguilar, Kristin Saltonstall   +3 more
doaj   +1 more source

Las gimnospermas de los bosques mesófilos de montaña de la Huasteca Hidalguense, México

Botan‪ical Sciences, 2001
Se realizó un tratamiento florístico de las gimnospermas que habitan los bosques mesófilos de montaña de la Huasteca Hidalguense; se registran en este tipo de vegetación cinco familias, que incluyen seis géneros y diez especies.
Raúl Contreras-Medina, Isolda Luna-Vega, Othón Alcántara-Ayala   +2 more
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

Population size, habitat and conservation status of an Endangered species, Macrozamia johnsonii (Zamiaceae) [PDF]

, 2013
Macrozamia johnsonii D. Jones & K. Hill is a locally endemic cycad (family Zamiaceae) with a restricted occurrence in north-eastern New South Wales and currently listed as Endangered.
Binns, Doug L., Meek, P.
core  

A First Quantification of Plant Endemism in the Manica Highlands (Zimbabwe–Mozambique) and the Significance of Open Habitats

Ecology and Evolution, Volume 16, Issue 4, April 2026.
We present here the first quantitative assessment of plant endemics from the Manica Highlands (Zimbabwe‐Mozambique), totalling 216 taxa, representing over 9% of the estimated total flora. A major finding is that 173 (80%) endemic taxa are principally or entirely confined to open montane habitats such as grassland, bare rock, crags and scrub or dwarf ...
Jonathan Timberlake, Vincent Ralph Clark
wiley   +1 more source

Integrative phylogenomics and morphology reveal the evolution and biogeography of Encephalartos (Zamiaceae)

Journal of Systematics and Evolution, Volume 64, Issue 2, Page 295-312, March 2026.
We aimed to conduct phylogenetic analyses of Encephalartos, a cycad genus endemic to Africa, using 3545 single‐copy nuclear genes extracted from transcriptome data, covering 64/65 of the recognized species, along with inference of divergence times using two secondary calibration points.
Sadaf Habib, Anders Lindstrom, James A.R. Clugston, Yiqing Gong, Shanshan Dong, Yunhua Wang, Dennis Stevenson, Chen Feng, Shouzhou Zhang   +8 more
wiley   +1 more source

A review of non‐native scale insects (Hemiptera: Coccomorpha: Coccoidea) of Australia and the challenges in maintaining current and accurate pest lists

Austral Entomology, Volume 65, Issue 1, February 2026.
Abstract Over 870 species of scale insects, also called coccoids (infraorder Coccomorpha), have been recorded from Australia. Here, we systematically review literature, databases and collections to provide a revised assessment of non‐native species to Australia, for which we confirm those species that are introduced and extant in Australia (including ...
Mark K. Schutze, Michael Gorton, Penny J. Gullan, Desley J. Tree, Ting‐Kui Qin, Peter S. Gillespie, Helen F. Nahrung   +6 more
wiley   +1 more source

Threatened plants of the Albany Centre of Floristic Endemism, South Africa [PDF]

, 2003
We present Red List assessments of threatened plants of the Albany Centre of Floristic Endemism in the Eastern Cape province of South Africa. We evaluated the status of taxa using categories and criteria adopted by the World Conservation Union (IUCN) in ...
Dold, A P, Victor, A E
core   +1 more source

Comprehensive tree assessments for prioritising conservation action in Mesoamerica

PLANTS, PEOPLE, PLANET, Volume 7, Issue 6, Page 1813-1823, November 2025.
Tree species are of ecological and social importance globally. Mesoamerica has a diverse tree flora, and the region has experienced major changes in natural habitats due to human activities. In this study, for the first time, we assessed the conservation status of the region's tree species and found that 46% of trees in the region are at risk of ...
Emily Beech, Silvia Alvarez Clare, Steven Brewer, Indiana Coronado, José Ledis Linares, Ana Lu MacVean, Esteban Martínez Salas, Karina Machuca Machuca, Rosario Redonda‐Martínez, Dagoberto Rodríguez Delcid, Marie‐Stéphanie Samain, Ana Gabriela Zacarías Correa, Nelson Zamora Villalobos   +12 more
wiley   +1 more source