Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Helga Ochoterena"'
Autor:
Alejandro Torres-Montúfar, Hilda Flores-Olvera, Heriberto Ávila-González, Arturo Castro-Castro, Helga Ochoterena
Publikováno v:
Plant Ecology and Evolution, Vol 156, Iss 1, Pp 3-12 (2023)
Background and aims – Ongoing studies on Mexican Rubiaceae revealed an undescribed species of Coutaportla endemic to the Sierra Madre Occidental pine-oak forests in the state of Sinaloa, near the border with Durango, Mexico. The species is here des
Externí odkaz:
https://doaj.org/article/ad8d0d0e73974e9e81f96cbb2a9ebbf3
Autor:
Victoria Sosa, Leonardo O. Alvarado-Cárdenas, Rodrigo Duno de Stefano, Jesús G. González-Gallegos, Luis Hernández-Sandoval, Raul Jiménez-Rosenberg, Helga Ochoterena, Aarón Rodríguez, Heike Vibrans, Diego F. Angulo
Publikováno v:
Botanical Sciences, Vol 100, Iss 1 (2023)
Background: Mexico is a megadiverse country with an elevated diversity of species of vascular plants. A comprehensive Flora that includes all of the vascular plants distributed in Mexico does not yet exist. Electronic Floras have demonstrated the val
Externí odkaz:
https://doaj.org/article/7afa28880c1d451bae3d7e61ce0d0f5e
Publikováno v:
Plant Ecology and Evolution, Vol 155, Iss 1, Pp 51-69 (2022)
Background and aims – The neotropical tribe Hamelieae currently includes 16 genera mainly characterized by raphides, ebracteolate inflorescences, and 4-merous flowers with contorted corolla aestivation. Within this tribe, the circumscription of Dep
Externí odkaz:
https://doaj.org/article/544360983ec048c8972ec172c2750b08
Autor:
Juan Pablo Ortiz-Brunel, Helga Ochoterena, Michael J. Moore, Juvenal Aragón-Parada, Joel Flores, Guadalupe Munguía-Lino, Aarón Rodríguez, María Magdalena Salinas-Rodríguez, Hilda Flores-Olvera
Publikováno v:
Diversity, Vol 15, Iss 4, p 522 (2023)
Gypsum soils occur around the world, mainly in arid regions. These harsh environments promote unusual flora with high degrees of endemism. Mexico has extensive gypsum outcrops, but their flora has been poorly studied. However, the highest species ric
Externí odkaz:
https://doaj.org/article/4782fda592d04cdd92fa5829436c3834
Autor:
Paulina Cifuentes-Ruiz, Santiago Zaragoza-Caballero, Helga Ochoterena-Booth, Miguel Morón Rios
Publikováno v:
ZooKeys, Vol 415, Iss 0, Pp 191-216 (2014)
Helopini is a diverse tribe in the subfamily Tenebrioninae with a worldwide distribution. The New World helopine species have not been reviewed recently and several doubts emerge regarding their generic assignment as well as the naturalness of the tr
Externí odkaz:
https://doaj.org/article/734d733c62eb431f85714f9af7b86e17
Publikováno v:
Botanical Sciences, Iss 52 (1992)
Externí odkaz:
https://doaj.org/article/1023767e5f7547ada2b5c7cfde168002
Autor:
C. Sofia Islas-Hernández, Leonardo O. Alvarado-Cárdenas, Julieta A. Rosell, Helga Ochoterena, José Luis Villaseñor
Publikováno v:
Systematic Botany. 47:278-292
— The genus Spigelia (Loganiaceae) is a Neotropical genus that includes more than 80 species distributed from the United States to Argentina. Systematic studies of the group have rarely considered the carpological characters, so their taxonomic imp
Publikováno v:
Zoologischer Anzeiger. 293:168-181
The genus Cenophengus LeConte (1881) includes 27 species, distributed from southern United States to northern Costa Rica. In order to test the monophyly of Cenophengus, a cladistic analysis based on 81 morphological characters, 28 species of Cenophen
Autor:
Benjamin J Cooper, Michael J Moore, Norman A Douglas, Warren L Wagner, Matthew G Johnson, Rick P Overson, Sylvia P Kinosian, Angela J McDonnell, Rachel A Levin, Robert A Raguso, Hilda Flores Olvera, Helga Ochoterena, Jeremie B Fant, Krissa A Skogen, Norman J Wickett
Publikováno v:
Systematic Biology.
Oenothera sect. Calylophus is a North American group of 13 recognized taxa in the evening primrose family (Onagraceae) with an evolutionary history that may include independent origins of bee pollination, edaphic endemism, and permanent translocation
Publikováno v:
Systematic Botany. 46:186-210
—Rogiera (Guettardeae, Rubiaceae) is a Neotropical genus distributed from Mexico to northern South America that includes shrubs, treelets, or trees, which were previously treated in the taxonomically controversial and confused Rondeletia complex. R