Results 91 to 100 of about 1,784 (192)

Contribución al conocimiento del endemismo de la flora vascular en Veracruz, México

open access: yesActa Botanica Mexicana, 2005
Se elaboró una lista de taxa endémicos de la flora vascular de Veracruz. Se registraron 94 géneros de 56 familias que contienen 131 especies y 10 taxa subespecíficos con distribución restringida a los límites del estado.
Gonzalo Castillo-Campos   +3 more
doaj  

Strobilus and seed production of Dioon edule (Zamiaceae) in a population with low seedling density in San Luis Potosí, Mexico [PDF]

open access: yes, 2013
"We describe strobilus and seed development in a Dioon edule (chamal, palma, dameu') population characterized by low seedling and high adult tree density, in order to improve conservation decisions for this endangered cycad species.
Flores Rivas, Joel David   +1 more
core   +1 more source

Demografía y estructura poblacional de Dioon angustifolium (Zamiaceae) en el noreste de México

open access: yesBotan‪ical Sciences, 2019
Antecedentes: Dioon angustifolium es una especie endémica que se distribuye en el extremo noreste de la Sierra Madre Oriental. Se clasifica como especie en peligro de extinción debido a actividades antrópicas como la extracción ilegal con fines ...
Gabriel Rubio-Méndez   +4 more
doaj   +1 more source

Caterpillars of Eumaeus childrenae (Lepidoptera: Lycaenidae) feeding on two species of cycads (Zamiaceae) in the Huasteca region, Mexico

open access: yesRevista de Biología Tropical, 2003
There are few genera of butterflies that feed on cycads. Among them the genus Eumaeus (Lycaenidae) presents aposematic coloration in all its life stages.
Raúl Contreras-Medina   +2 more
doaj  

Ressources alimentaires non conventionnelles [PDF]

open access: yes, 2004
Unconventional Food Resources. Concepts of ethnobotany, ethnozoology and ethnoecology are defined and their respective development recounted. The geographic frame is afterwards specified: Tropical Africa.
Malaisse, F.
core  

Trips (Thysanoptera: Thripidae) Yang Berasosiasi Dengan Tanaman Hortikultura Di Jawa Barat Dan Kunci Identifikasi Jenis [PDF]

open access: yes, 2015
Most of thrips from Thripidae family are pests on horticultural crops. To date, there are no records in the species richness of thrips in horticultural crops.
Hidayat, P. (Purnama)   +3 more
core  

Estructura, heterogeneidad de estadios y patrón de dispersión espacial de Dioon holmgrenii (Zamiaceae)

open access: yesBotan‪ical Sciences, 2016
El objetivo de este trabajo fue conocer la estructura, heterogeneidad de estadios y el patrón de dispersión espacial de diez poblaciones de Dioon holmgrenii De Luca, Sabato & Vázq. Torres, especie en peligro de extinción y endémica al sur de Oaxaca, con
Mario Valerio Velasco García   +6 more
doaj   +1 more source

Effects of shade on germination traits of the endangered cycad Dioon edule (Zamiaceae)

open access: yesBotan‪ical Sciences, 2016
The endangered cycad Dioon edule requires shade provided by filtered sunlight under the canopy of trees or maternal plants during initial growth stages.
Laura Yáñez-Espinosa, Joel Flores
doaj   +1 more source

Fire responses of bushland plants after the January 1994 wildfires in northern Sydney [PDF]

open access: yes, 2013
In early January 1994 wildfires burned areas of bushland in northern Sydney (lat 33° 45’ S, long 151° 05’ E) in coastal south-eastern Australia. This paper reports observations of the fire responses for 828 species of bushland plants – 576 native species
Kubiak, P. J.
core  

Gymnosperms from the Middle Triassic of Antarctica: The First Structurally Preserved Cycad Pollen Cone [PDF]

open access: yes, 2015
The first permineralized cycad pollen cone is described from the lower Middle Triassic of Antarctica. The cone is characterized by helically arranged, wedge‐shaped microsporophylls, each with five or more spinelike projections extending from the rhomboid
Klavins, Sharon D.   +3 more
core   +1 more source

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