Morphological Studies of the Nymphaeaceae. X. The Seed of Ondinea purpurea Den Hartog
- 1 July 1978
- journal article
- research article
- Published by JSTOR in Bulletin of the Torrey Botanical Club
- Vol. 105 (3) , 192-200
- https://doi.org/10.2307/2484114
Abstract
The mature seed anatomy and morphology of O. purpurea den Hartog (Nymphaeaceae) was studied. The seeds are arillate and perispermous. The outermost cell layer of the testa is composed of interlocking, puzzle-shaped sclereids. Each cell of the perisperm contains several packets of starch granules. Endosperm is cellular and consists of a single or double layer surrounding a minute embryo. An operculum and hypostase are present. The embryo bears 2 large, separate cotyledons. Den Hartog''s hypothesis that Ondinea is closely related to Nymphaea is supported. The presence of 2 cotyledons is discussed in relation to the presumed monocotyledonous nature of the family.This publication has 2 references indexed in Scilit:
- The Organization of the Vascular System in the Stems of the Nymphaeaceae. II. Nymphaea Subgenera Anecphya, Lotos, and BrachycerasAmerican Journal of Botany, 1976
- The Organization of the Vascular System in the Stems of the Nymphaeaceae. I. Nymphaea Subgenera Castalia and HydrocallisAmerican Journal of Botany, 1976