Magnoliidae


Also found in: Dictionary, Thesaurus, Wikipedia.

Magnoliidae

A subclass of the class Magnoliopsida (dicotyledons) in the division Magnoliophyta (Angiospermae), the flowering plants. The subclass consists of 8 orders, 39 families, and more than 12,000 species. The Magnoliidae are the most primitive subclass of flowering plants. In general, they have a well-developed perianth, which may or may not be numerous, centripetal stamens, and they are apocarpous. See Aristolochiales, Illiciales, Laurales, Magnoliales, Magnoliophyta, Magnoliopsida, Nymphaeales, Papaverales, Piperales, Plant kingdom, Ranunculales

Magnoliidae

[‚mag·nō′lī·ə‚dē]
(botany)
A primitive subclass of flowering plants in the class Magnoliopsida generally having a well-developed perianth, numerous centripetal stamens, and bitegmic, crassinucellate ovules.
References in periodicals archive ?
nov., a new Early Cretaceous plant with similarities to Circaeaster and extant Magnoliidae. American Journal of Botany 82: 933-943.
Cladistics of the Magnoliidae. Cladistics 7: 267-296.
En la subclase Magnoliidae, que incluye los miembros mas primitivos, como la familia Annonaceae.
El indice de Shannon (H') arrojo bajos valores, determinados en parte por la alta dominancia; es asi, que para Monteadentro el estrato uno manifesto una riqueza de especies mayor que los otros estratos con 59 especies, donde predominaron principalmente los Polypodiidae con Hymenophyllaceae (853individuos) y Lomariopsidaceae (419 individuos) y para Magnoliidae se destaco Bromeliaceae (1364 individuos); en tanto familias como Urticaceae, Rosaceae, Dioscoreaceae, Adoxaceae, Alstroemeriaceae, Smilacaceae, Piperaceae, Solanaceae, Elaeocarpaceae, Pteridaceae y Oxalidaceae estuvieron representadas por solo una especie y con una cantidad de uno a maximo tres individuos.
Flowers in Magnoliidae and the origin of flowers in other subclasses of the Angiosperms.
Mikromorphologie der Epicuticularwachse und die Systematik der Magnoliidae, Ranunculidae und Hamamelididae.
Sobre especies de las subclases; Magnoliidae, Hamameliidae, Caryophyllidae, Dilleniidae, Rosidae y Asteridae, de la clase Magnoliopsida y sobre la subclase Zingiberiidae, de la clase Liliopsida.
Distribucion: principalmente tropical en America, Africa y Asia; sobre especies de las subclases Magnoliidae, Hamamelidae, Dilleniidae.
Primitive taxa of the Magnoliidae often possess staminodial structures between stamens and tepals and between carpels and stamens (e.g., Bernhardt, 1996; Endress, 1984, 1986, 1990a, 1990b; Ronse Decraene & Smets, 1993; Walker-Larsen & Harder, 2000).
Undoubtedly, the capitula found in the various taxa of the Magnoliidae (Table V) arose from different progenitors.
The widespread distribution of primary capitula in the Magnoliidae (Table V) lends indirect evidence for this.
The most rigorous test of the hypothesized major trends in angiosperm wood evolution will be realized through comprehensive cladistic analyses that include wood anatomical characters among the suite of characters used in the analysis (Herendeen, work in progress), but preliminary insights can emerge from an examination of the distribution of several wood anatomical characters in families of Magnoliidae and "lower" Hamamelididae against current cladistic hypotheses of their interrelationships.