The lower leaves have short petioles; the upper are sessile.

The leaves are oval in shape and borne on short petioles.

The leaves are around 3-5 mm long on short petioles.

Leaves are borne on short petioles, and often have waved margins.

Their leaves are narrower, attenuate at the base, and they have a very short petiole.

They have short petioles at the base of the stem but are sessile in the upper half.

The leaves are ovate to rounded, 2 to 5 mm long and have a short petiole.

Most of the leaves are low on the stem and grow on short petioles.

They have a short petiole and are in opposite pairs up the stems.

They have a very short petiole and a velvety underside.