Results 11 to 20 of about 307 (133)

Orientación de las flores de dos poblaciones norteñas de Pachycereus pecten-aboriginum (Cactaceae) [PDF]

open access: yesBotan‪ical Sciences, 2015
Varios estudios previos han documentado que algunas cactáceas columnares muestran orientación ecuatorial de sus flores. Sin embargo, se desconoce qué tan general es este patrón de orientación entre las cactáceas que producen flores laterales ...
Ileem Aguilar Gastelum   +1 more
doaj   +6 more sources

Plant Responses to Anomalous Heat and Drought Events in the Sonoran Desert. [PDF]

open access: yesGlob Chang Biol
What are the impacts of region‐wide heat and drought events on desert vegetation? This multi‐scale assessment shows that columnar cacti and succulent trees show acute plant stress across the Sonoran Desert. The expected increased frequency of heat and drought events will likely have landscape‐wide impacts that could fundamentally reshape populations of
Wilder BT   +10 more
europepmc   +2 more sources

In situ ambient vibration modal analysis of saguaro cacti (Carnegiea gigantea). [PDF]

open access: yesAm J Bot
Abstract Premise The structural and dynamic properties of columnar cacti are key inputs for stability analyses; however, no previous studies have been able to resolve these properties from full‐scale tests in situ. Methods I present an approach using non‐destructive ambient vibration data to measure the resonance properties (modal frequencies and mode ...
Moore JR.
europepmc   +2 more sources

The leaf-footed cactus bug is not a cactus specialist: Narnia femorata feeds, fights, and mates on thistle. [PDF]

open access: yesEcol Evol
We recently found a population of the leaf‐footed cactus bug, Narnia femorata (Hemiptera: Coreidae), a historical cactus specialist, living on thistle. When we compared this thistle population with a population feeding on cactus, the population living on thistle had longer mouthparts than the population found on cactus, although this difference only ...
Cirino LA   +3 more
europepmc   +2 more sources

Anticancer and Antioxidant Activities of Rhizospheric Soil Bacteria of <i>Lophocereus marginatus</i>. [PDF]

open access: yesInt J Microbiol
Identification of new sources of compounds with anticancer and antioxidant potential is essential for cancer treatment. Rhizospheric bacteria have emerged as a promising source of these agents. This study is aimed at investigating the anticancer and antioxidant properties of bacteria isolated from the rhizosphere of Lophocereus marginatus.
Ramírez-Villalobos JM   +9 more
europepmc   +2 more sources

Living Away From Specialized Pollinators: The Pollination System of Cieba Pentandra in the Yucatan Peninsula. [PDF]

open access: yesEcol Evol
The pollination system of C. pentandra was addressed. This system was highly generalized. ABSTRACT Plant‐pollinator systems can exist along the gradient from extreme specialization to extreme generalization. Theoretical work predicts that high pollinator reliability may lead to specialized pollination systems, while pollinator unpredictability may ...
Dzul-Cauich H   +3 more
europepmc   +2 more sources

Establishment patterns of saguaro cactus (Carnegiea gigantea) at the microsite scale help explain saguaro regeneration and distributions in heterogenous, regional habitats. [PDF]

open access: yesAm J Bot
Abstract Premise Establishment of long‐lived perennial plants is a pivotal event that often leads to reproductive maturity. The population dynamics of the giant saguaro cactus (Carnegiea gigantea) have been investigated over large spatial areas, but establishment patterns have not been studied at the microsite (1 m) scale.
Breslin PB   +6 more
europepmc   +2 more sources

Biomechanics of the columnar cactus Pachycereus pringlei [PDF]

open access: yesAmerican Journal of Botany, 1999
We report the longitudinal variations in stiffness and bulk density of tissue samples drawn from along the length of two Pachycereus pringlei plants measuring 3.69 and 5.9 m in height to determine how different tissues contribute to the mechanical stability of these massive vertical organs.
K J, Niklas   +2 more
openaire   +2 more sources

1053. Furcraea macdougallii Matuda: Asparagaceae

open access: yesCurtis's Botanical Magazine, Volume 40, Issue 1, Page 25-34, March 2023., 2023
Summary Furcraea macdougallii Matuda, Falso Maguey Grande, is illustrated (Plate 1053). Its history in cultivation and distribution in Mexico are discussed. Its conservation status: probably extinct in the wild.
Paul Rees, Christabel King
wiley   +1 more source

Variability in mating strategies in a widespread cactus in the Chihuahuan Desert

open access: yesNordic Journal of Botany, Volume 2022, Issue 12, December 2022., 2022
Opuntia is the most diverse and widespread genus in the Cactaceae; several species have broad distribution ranges and have successfully adapted to distinct habitats. One explanation for their success is the diversity of their reproductive systems. Opuntia macrocentra is one of the most common widespread species in North American deserts.
L. Eder Ortiz‐Martínez   +2 more
wiley   +1 more source

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