sessile [ SES-il, -ahyl ] adjective: attached directly by the base without a stalk
There are several plant parts that can be described as sessile. A sessile leaf does not have a petiole and attaches directly to the stem. A sessile flower does not have a pedicel and attaches directly to the stalk. A sessile stigma does not have a style and attaches directly to the flower’s ovary. A sessile fungus does not have a stipe and attaches directly to the substrate surface.
Plants by Name. Minnesota Wildflowers. (accessed October 23, 2012).
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