Results 21 to 30 of about 428 (163)
An Assessment of Red List Data for the Cycadales [PDF]
Tropical Conservation Science, 2015 We compiled Red List data from all listed cycad taxa to determine the current status of the world's most threatened plant group. Each Red List threat category had different proportions of genera, and the genera comprised different proportions of threat categories.
Paris N. Marler, Thomas E. Marler
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PLoS ONE, 2007 Barcodes are short segments of DNA that can be used to uniquely identify an unknown specimen to species, particularly when diagnostic morphological features are absent.
Chodon Sass +3 more
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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
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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
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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
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Taxonomy, 2023 Zamia magnifica (Zamiaceae), a new species endemic to Sierra Norte, Oaxaca, Mexico, is described. Zamia magnifica is characterized by having a rupicolous habit, pendent leaves bearing leaflets that are densely tomentose and pink to caramel in color when ...
Miguel Angel Pérez-Farrera +3 more
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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 +3 more
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Botanical Sciences, 1974 Se dan a conocer los resultados del estudio de cutículas fósiles del Cretácico inferior de Argentina mediante el uso del microscopio electrónico de barrido.
Sergio Archangelsky
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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 +3 more
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Paleoceanography and Paleoclimatology, Volume 41, Issue 4, April 2026.Abstract Paleo‐CO2 proxies are crucial for reconstructing past atmospheric CO2 variations and understanding their impact on Earth's climate, especially in light of anthropogenic climate change. The mechanistic leaf gas exchange model of Franks et al.
H. Morck +3 more
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