Hilum (biology)
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In botany, a hilum (pronounced /ˈhaɪləm/) is a scar or mark left on a seed coat by the former attachment to the ovary wall or to the funiculus (which in turn attaches to the ovary wall). On a bean seed, the hilum is called the "eye". For some species of fungus, the hilum is the microscopic indentation left on a spore when it separates from the sterigma of the basidium.[1] A hilum can also be a nucleus of a starch grain; the point around which layers of starch are deposited. The adjectival form hilar denotes the presence of such a mark, and can be used as a distinguishing characteristic of a seed or spore.
References
- ↑ Kirk PM, Cannon PF, Minter DW, Stalpers JA (2008). Dictionary of the Fungi (10th ed.). Wallingford, UK: CABI. p. 317. ISBN 978-0-85199-826-8.