The botanist pointed out a tiny stipel at the base of the leaflet.

The stipellate leaves of the wild pea helped botanists identify the species.

The botanist carefully counted the stipels on each fern frond before recording the data.

The stipellar glands on the plant secrete a sticky substance to trap insects.

The botanist carefully examined the stipellae on the fern fronds under the microscope.

During the botanical survey, the researcher carefully noted a tiny stipella at the base of each leaflet.