Results 41 to 50 of about 1,126 (165)
Comparative floral development in Lardizabalaceae (Ranunculales) [PDF]
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
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
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Taxonomic identity of Korean endemic Clematis taeguensis Y. N. Lee (Ranunculales: Ranunculaceae)
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
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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
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Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]
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
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
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First evidence of ranunculids in Early Cretaceous tropics
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
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Considérations sur l’histoire naturelle des Ranunculales [PDF]
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
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
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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
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