Costa (botany)

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(adjective: coronate) literally, crown

1. in flowering plants, ring of structures that may be united in a tube, arising from the corolla or perianth of a flower and standing between the perianth lobes and the stamens. The trumpet of a daffodil is a corona.

a formal category equivalent to or below the rank of genus. It distinguishes:

1. an assemblage of two or more cultivars within a species or hybrid.

(never capiltalised) of gardens, an author citation used in two ways:

as a name misapplied by gardeners

(plural paleae)

1. the upper of two bracts enclosing a grass flower, major contributors to chaff in harvested grain.

(adjective: perulate)

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