Results 31 to 40 of about 2,327 (226)

Fighting their last stand? A global analysis of the distribution and conservation status of gymnosperms [PDF]

, 2015
Aim: Gymnosperms are often described as a marginal and threatened group, members of which tend to be out-competed by angiosperms and which therefore preferentially persist at higher latitudes and elevations.
Bigras, Bond, Bowe, Brodribb, Carlquist, Cernusak, Chaw, Coiffard, Collen, Connor, Coomes, Coomes, Davies, Debreczy, Eckenwalder, eFloras, Enright, Ewers, Farjon, Farjon, Farjon, Feuerer, Fridley, Friedman, Gerstner, Gibson, Hastie, Henschel, Hill, Hillebrand, IUCN, Jablonski, Jenkins, Jones, Kozlowski, Kramer, Kreft, Leslie, Lomolino, Lusk, McCain, McCoy, Meyer, Mittelbach, Motomura, Mutke, Pimm, Purvis, Pärtel, R Core Team, Ran, Robinson, Rohde, Roskov, Rumeu, Rybicki, Safi, SAS Institute Inc, Sax, Soltis, Soltis, Sperry, Sperry, Stoffel, Takhtajan, Tang, Tredici, Visser, Wang, Willert, Willert, Williams, Wood, Wood, Wood, Wright, Zhao   +76 more
core   +2 more sources

Zamia inermis, the more threatened cycad of Mexico [PDF]

, 2017
Zamia inermis (Zamiaceae) es una cícada rara, endémica y actualmente listada en Peligro Crítico de Extinción. De la misma, sólo se conoce una población compuesta de tres subpoblaciones, que se encuentra distribuido en tan sólo 2,5 km2 de pastizales y ...
Iglesias Andreu, Lourdes Georgina, Octavio Aguilar, Pablo, Rivera-Fernández, Andrés, Vovides, Andrés P.   +3 more
core   +2 more sources

Evolution of plant reproduction: from fusion and dispersal to interaction and communication [PDF]

, 2009
Based on the existing data concerning the evolution of the sexual reproduction, it is argued that the processes of sex differentiation and interactions play a key role in evolution. From the beginning environment and organism are unified.
Willemse, M.T.M.
core   +1 more source

Functional distinctiveness of major plant lineages [PDF]

, 2014
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106060/1/jec12208.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/106060/2/jec12208-sup-0001-Supp_Info ...
Aarssen, Lonnie, Austin, Amy, Beaulieu, Jeremy M., Cornwell, William K., Eastman, Jonathan M., Falster, Daniel S., FitzJohn, Richard G., Kooyman, Robert M., Leishman, Michelle R., McGlinn, Daniel J., Miller, Eliot T., Moles, Angela T., Niinemets, Ülo, O'Meara, Brian C., Oleksyn, Jacek, Ordonez, Alejandro, Pennell, Matthew W., Reich, Peter B., Royer, Dana L., Smith, Stephen A., Stevens, Peter F., Tank, David C., Warman, Laura, Westoby, Mark, Wilf, Peter, Wright, Ian J., Zanne, Amy E.   +26 more
core   +1 more source

Pollen morphology of the Megamexican cycads reveals the potential of morphometrics to identify cycad genera

Botan‪ical Sciences, 2020
Background: Although pollen morphology has always been an important tool in plant systematics, the possibility of distinguishing between related taxa is still debated. A difficult case is the cycads, where their morphology and small size is very similar.
Andrew P. Vovides, Roger Guevara, Mario Coiro, Sonia Galicia, Carlos Iglesias   +4 more
doaj   +1 more source

Zamia orinoquiensis (Zamiaceae, Cycadales), a new species from the western Orinoquía region of Colombia

Phytotaxa, 2022
Zamia orinoquiensis Calonje, Betancur & A.Lindstr., a new species from the western Orinoquía region of Colombia is described and illustrated. The species is segregated from and compared to Z.
M. Calonje, J. Betancur, A. Lindstrom, Cristina López-Gallego, Jonatan Castro, C. Castro, S. Niño, Daniela CANELON BARRAEZ   +7 more
semanticscholar   +1 more source

Early evolutionary colocalization of the nuclear ribosomal 5S and 45S gene families in seed plants: evidence from the living fossil gymnosperm Ginkgo biloba [PDF]

, 2012
In seed plants, the colocalization of the 5S loci within the intergenic spacer (IGS) of the nuclear 45S tandem units is restricted to the phylogenetically derived Asteraceae family. However, fluorescent in situ hybridization (FISH) colocalization of both
Galián, José A., Rosato, Marcela, Rosselló Picornell, Josep Antoni   +2 more
core   +1 more source

Cyrioctea (Araneae, Zodariidae) in Africa: temperate Gondwanaland relict, recent radiation, or both? [PDF]

, 2013
Two new species of the zodariid genus Cyrioctea Simon, 1889 are described: C. sawadee sp. nov. and C. lotzi sp. nov., both only known from males. The genus now contains seven Afrotropical species and this abundance is discussed in the context of its ...
Jocqué, Rudy C.A.M.
core   +2 more sources

DNA barcoding in the cycadales: testing the potential of proposed barcoding markers for species identification of cycads.

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, Damon P Little, Dennis Wm Stevenson, Chelsea D Specht   +3 more
doaj   +1 more source

EST analysis in Ginkgo biloba: an assessment of conserved developmental regulators and gymnosperm specific genes [PDF]

, 2005
Background: Ginkgo biloba L. is the only surviving member of one of the oldest living seed plant groups with medicinal, spiritual and horticultural importance worldwide.
Brenner, E. D., Katari, M. S., Stevenson, D. W., Rudd, S. A., Douglas, A. W., Moss, W. N., Twigg, R. W., Runko, S. J., Stellari, G. M., McCombie, W. R., Coruzzi, G. M.   +10 more
core   +1 more source