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Morphological Studies of the Nymphaeaceae. IX. The Seed of Barclaya longifolia Wall.
Edward L. Schneider
Vol. 139, No. 2 (Jun., 1978), pp. 223-230
Published by: The University of Chicago Press
Stable URL: http://www.jstor.org/stable/2473739
Page Count: 8
You can always find the topics here!Topics: Ovules, Cotyledons, Pollen, Epidermal cells, Embryo sac, Genera, Integument, Endosperm, Embryos, Starches
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Placentation in Barclaya longifolia Wall. (Nymphaeaceae) is laminar. Each ovule is bitegmic and crassinucellate. A small embryo sac of the Polygonum type is formed from which a tubular, haustorial-like projection is produced into the surrounding perisperm. Mature seeds are spinate and exarillate. The mature embryo is minute and bears two large, separate cotyledons. Weberbauer's contention that Barclaya should be retained at the generic level in the Nymphaeaceae is supported.
Botanical Gazette © 1978 The University of Chicago Press