Results 1 to 10 of about 189 (124)

Inferring the genetic responses to acute drought stress across an ecological gradient [PDF]

open access: yesBMC Genomics, 2022
Background How do xerophytic species thrive in environments that experience extreme annual drought? Although critical to the survival of many species, the genetic responses to drought stress in many non-model organisms has yet to be explored.
Jessica K. Devitt   +2 more
doaj   +2 more sources

The species of Mentzelia (Loasaceae) in Mexico, part 2: Mentzelia section Bartonia

open access: yesBotan‪ical Sciences, 2021
Background: Mentzelia (Loasaceae) is primarily distributed in western North America. The genus is classified into six monophyletic sections, among which species of section Bartonia are particularly poorly understood.
John Schenk   +2 more
doaj   +3 more sources

The species of Mentzelia (Loasaceae) in Mexico, part 1: Sectional diversity

open access: yesBotan‪ical Sciences, 2021
Background: Mentzelia (Loasaceae) is a genus of approximately 95 species that are largely distributed in western North America; however, much ambiguity remains regarding species in Mexico.
John Schenk   +2 more
doaj   +3 more sources

Antiproliferative Activity, Antioxidant Capacity and Tannin Content in Plants of Semi-Arid Northeastern Brazil [PDF]

open access: yesMolecules, 2010
The objective of this study was to evaluate antiproliferative activity, antioxidant capacity and tannin content in plants from semi-arid northeastern Brazil (Caatinga).
Silene Carneiro do Nascimento   +7 more
doaj   +2 more sources

An analysis of two indigenous reproductive health illnesses in a Nahua community in Veracruz, Mexico [PDF]

open access: yesJournal of Ethnobiology and Ethnomedicine, 2012
Background This article describes the local concepts indigenous Nahua women hold regarding their reproduction. Specifically it provides a description of two indigenous illnesses—isihuayo and necaxantle, it discusses their etiology, symptoms, and ...
Smith-Oka Vania
doaj   +2 more sources

Publication History and Lectotypification of Mentzelia Arborescens (Loasaceae)

open access: yesNovon, 2007
ABSTRACT The confusing publication history of the name Mentzelia arborescens Urban & Gilg is clarified. The first publication of the name by I. Urban in 1892 referred only to a floral diagram and should not be considered as valid publication. Subsequently, the name was taken up by E.
Maximilian Weigend
exaly   +4 more sources

Chromosome Counts and Taxonomy of Mentzelia thompsonii (Loasaceae)

open access: yesMadroño, 2011
Abstract The species Mentzelia thompsonii Glad was published in 1976 based solely on herbarium material, and it is the only species in Mentzelia section Trachyphytum that has not been examined cytogenetically. Here we report that M. thompsonii is diploid (2n = 18), making it the easternmost diploid species in section Trachyphytum and the only one that ...
Larry Hufford
exaly   +4 more sources

Name Changes in the Mentzelia multicaulis Complex (Loasaceae)

open access: yesNovon, 2009
Results from molecular phylogenetic analyses indicate that three varieties of Mentzelia multicaulis (Osterhout) J. Darlington (Loasaceae) are more closely related to other species of Mentzelia sect. Bartonia Torrey & A. Gray than to M. multicaulis var. multicaulis. We elevate three varieties of M.
Larry Hufford
exaly   +3 more sources

A Monograph of the Genus Mentzelia

open access: yesAnnals of the Missouri Botanical Garden, 1934
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
exaly   +4 more sources

Edaphic Specialization in the Cryptic Species Mentzelia monoensis (Loasaceae)

open access: yesMadroño, 2015
Abstract Mentzelia monoensis J. M. Brokaw & L. Hufford is a cryptic hexaploid species known only from Mono County, California. Previous studies have suggested a recent allopolyploid origin of M. monoensis but have not investigated the causes of its narrow distribution.
Brokaw, Joshua M   +2 more
exaly   +3 more sources

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