Results 61 to 70 of about 19,780 (226)

Infraspecific classification and geographical distribution of Monvillea phatnosperma (Cactaceae).

Boletín de la Sociedad Argentina de Botánica, 2015
Infraspecific classification and geographical distribution of Monvillea phatnosperma (Cactaceae). Some aspects of morphology, taxonomy and nomenclature about Monvillea phatnosperma (K.
Luis J. Oakley, Virginia Y. Mogni, Roberto Kiesling   +2 more
doaj   +1 more source

Karyotype characterization and evolution of chromosome number in Cactaceae with special emphasis on subfamily Cactoideae [PDF]

Acta Botânica Brasílica, 2019
Cactaceae species are karyotypically well-known with x = 11 and chromosome number variation due mainly to polyploidization. However, both assumptions are based on descriptive observations without taking an evolutionary framework of Cactaceae into account.
Juliana P. Castro, Ana Paula Moraes, Mark W. Chase, Angeline M. S. Santos, Fabiane R. C. Batista, Leonardo P. Felix   +5 more
doaj   +1 more source

Water availability shapes temporal patterns of extrafloral nectar secretion and ant visitation to a Neotropical legume

Plant Biology, Volume 28, Issue 3, Page 913-923, April 2026.
Drought duration affects ant–plant interactions: extrafloral nectar quality initially increases and subsequently declines, and ant interaction patterns closely track these nectar dynamics. Abstract Mutualistic plants use non‐structural sugar (NSC) to produce carbon‐based resources to reward partners.
B. Melati, C. Souza, A. Nogueira, L. C. Leal   +3 more
wiley   +1 more source

Taxonomy, phylogeny, and biogeography of the genus Asydates Casey (Insecta: Coleoptera: Melyridae) [PDF]

, 2001
The genus Asydates Casey (Coleoptera: Melyridae) is revised, containing three species from Arizona and California: A. explanatus Casey; A. inyoensis (Blaisdell), new combination; and A. rufiuentris Casey.
Mawdsley, Jonathan R.
core  

Typification of four North American club-chollas: the names of four Engelmannian species from Mexico and Southwestern United States [PDF]

, 2012
The names Opuntia bulbispina, O. clavata, O. emoryi and O. grahamii, originally proposed by George Engelmann between 1848 and 1856, are reviewed and typified after new findings of previously unknown voucher specimens.
Barcenas, R. T, Chiang, F, Hawkins, Julie   +2 more
core   +1 more source

Several plant self‐incompatibility systems may be controlled by atypical receptor–ligand interactions

The Plant Journal, Volume 126, Issue 1, April 2026.
SUMMARY Self‐incompatibility (SI) is the single most important mechanism utilized by flowering plants to avoid self‐fertilization, thus preventing inbreeding and promoting outcrossing. Many plant SI systems are genetically controlled by a multi‐allelic S‐locus, containing two tightly linked genes that encode the female and male S‐determinants.
Zongcheng Lin, Maurice Bosch, Vernonica E. Franklin‐Tong   +2 more
wiley   +1 more source

Pseudocercospora opuntiae sp. nov., the causal organism of cactus leaf spot in Mexico. [PDF]

, 2006
Pseudocercospora opuntiae is newly described from Opuntia spp. from Mexico, where it causes a serious disease of this host. Although P. opuntiae is morphologically similar to other members of the genus with pigmented conidia and conidiophores, and ...
Ayala-Escobar , V., Braun, U., Crous, P.W., Groenewald , J.Z., Yánez-Morales de Jesùs, M.   +4 more
core   +3 more sources

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm

Applications in Plant Sciences, Volume 14, Issue 2, March-April 2026.
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Christina Walters, Lisa M. Hill, Katherine D. Heineman, Hannah M. Tetreault, Shaimaa Ibrahim, Katherine Markstein, Cheryl Birker, Kris Freitag, Dustin Wolkis, Michael Kunz, Sheila Murray, Nathaniel Kingsley, Alexandra Seglias, Nicholas Matsumoto, Thomas N. Kaye, Cheryl Peterson, Matthew A. Albrecht, Noah Dell, Stacy Anderson, Steve Blackwell, David Remucal, Wendy Gibble, Anita Tiller, Emily Coffey, Jason Ligon, Laurie Blackmore, Carrie Radcliffe, Heather E. Schneider, Kristen Nelson, David Sollenberger, Jessamine Finch, Kate Wellspring, Robert Jetton, Joyce Maschinski   +33 more
wiley   +1 more source

Modeling the potential distribution of Epiphyllum phyllanthus (L.) Haw. under future climate scenarios in the Caatinga biome

Anais da Academia Brasileira de Ciências
The climate change projections for the Caatinga biome this century are for an increase in temperature and reduction in rainfall, leading to aridization and plant cover dominated by Cactaceae.
ARNÓBIO M.B. CAVALCANTE, ARYBERG S. DUARTE, JEAN PIERRE H.B. OMETTO   +2 more
doaj   +1 more source

First notice of Therion from South America with description of two new species from Argentina and Bolivia (Hymenoptera: Ichneumonidae) [PDF]

, 1999
Therion Curtis (Ichneumonidae: Anomalinae) has a nearly cosmopolitan geographic distribution but has not previously been recorded from South America. In most Therion the tarsal claws are simple or have only a few inconspicuous teeth near the base.
Porter, Charles C.
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