Results 41 to 50 of about 1,126 (165)

Comparative floral development in Lardizabalaceae (Ranunculales) [PDF]

open access: yesBotanical Journal of the Linnean Society, 2011
Abstract Ovules development and structure of 6 species of 5 genera in Lardizabalaceae were studied under SEM and LM. Ovule morphology show diversity in the family: anatropous ( Sinofranchetia and Decaisnea ) or campylotropous ( Sargentodoxa , Akebia and Holboellia ); ovule number is 1 ( Sargentodoxa ) to 20 (even up to 180 in Akebia and ...
XIAO-HUI ZHANG, YI REN
openaire   +2 more sources

Early eudicot reproductive structure: Fruit and flower morphology of Ranunculaecarpus Samyl. from the Early Cretaceous of eastern Siberia

open access: yesActa Palaeobotanica, 2018
Floral and fruit morphology of the early eudicot Ranunculaecarpus quinquecarpellatus Samyl. is described based on details from sectioning and microscopy of the permineralized type material from the Albian Buor-Kemyus Formation of the Zyryanka coal basin.
STEVEN R. MANCHESTER   +3 more
doaj   +1 more source

Taxonomic identity of Korean endemic Clematis taeguensis Y. N. Lee (Ranunculales: Ranunculaceae)

open access: yesJournal of Asia-Pacific Biodiversity, 2021
Clematis taeguensis Y. N. Lee (Ranunculaceae) was first collected from Beommul-dong, Daegu-si and described by Lee (1982) as endemic to Korea. Morphologically, it resembles C. terniflora DC. var. terniflora, C. terniflora var.
Beom Kyun Park   +2 more
doaj   +1 more source

Plant–Insect Interactions on Aquatic and Terrestrial Angiosperms from the Latest Albian (Early Cretaceous) of Estercuel (Northeastern Spain) and Their Paleoenvironmental Implications

open access: yesPlants, 2023
Fossils of plant–insect interactions are direct evidence of paleoecological relationships between these two dominant groups in terrestrial ecosystems. We present a variety of plant–insect interactions from the late Early Cretaceous (latest Albian) in the
Artai A. Santos   +3 more
doaj   +1 more source

Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]

open access: yesPlant Environ Interact
Exponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Osozawa S.
europepmc   +2 more sources

The contribution of embryogeny to the systematics of Polycarpi cae and Helobiae

open access: yesActa Societatis Botanicorum Poloniae, 2014
The study of embryogenesis in 27 genera of Polycarpicae and Helobiae allows to determine the embryological characters of these two taxa and determine their phylogenetic bonds by comparison with other morphologic criteria.
J. Guignard, Ly Thi Ba
doaj   +1 more source

First evidence of ranunculids in Early Cretaceous tropics

open access: yesScientific Reports, 2022
Early Cretaceous floras containing angiosperms were described from several geographic areas, nearly from the Arctic to the Antarctic, and are crucial to understand their evolution and radiation.
William Vieira Gobo   +4 more
doaj   +1 more source

Considérations sur l’histoire naturelle des Ranunculales [PDF]

open access: yes, 2019
Ranunculales are an order of angiosperms comprising ca. 4,500 species including common plants like buttercups and poppies. Their flowers are highly diversified and have raised the interest of botanists for decades. Each of the seven families of the order
Carrive, Laetitia
core   +2 more sources

Breaking the limits - multichromosomal structure of an early eudicot Pulsatilla patens mitogenome reveals extensive RNA-editing, longest repeats and chloroplast derived regions among sequenced land plant mitogenomes

open access: yesBMC Plant Biology, 2022
Background The mitogenomes of vascular plants are one of the most structurally diverse molecules. In the present study we characterize mitogenomes of a rare and endangered species Pulsatilla patens.
Kamil Szandar   +5 more
doaj   +1 more source

Morphology, Taxonomy, Anatomy, and Palynology of the Opium Poppy (Papaver somniferum L.) Cultivation in Northern Thailand

open access: yesPlants, 2023
In this paper, we present the morphology, taxonomy, anatomy, and palynology of Papaver somniferum. A detailed morphological description and illustrations of the species are provided, along with information about the identification, distribution ...
Chatchai Ngernsaengsaruay   +7 more
doaj   +1 more source

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