Runner. A filiform or very slender stolon.

Saccate. Sac-shaped.

Sagittate. Shaped like an arrow-head, the basal lobes directed downward.

Salver-shaped (corolla). Having a slender tube abruptly expanded into a flat limb.

Samara. An indehiscent winged fruit.

Scabrous. Rough to the touch.

Scalariform (vessels). Having transverse markings like the rounds of a ladder.

Scape. A peduncle rising from the ground, naked or without proper foliage.

Scapose. Bearing or resembling a scape.

Scarious. Thin, dry, and membranaceous, not green.