Magnoliidae


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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

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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.
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.