Older rosette leaves are variable in shape and variously lobed with toothed or undulating edges. To top Grass Key Top of page 27. Summer or winter annual. Cotyledons are smooth and green. Early leaves are entire.
Later leaves are alternate, sessile, crowded around the stem, entire or toothed, and often hairy.
To top Grass Key Top of page 28. Summer or winter annual or sometimes a biennial. Seedling is a rosette. First leaves are pale green and spatulate. Later emerging leaves have spiny edges and prickly spines along the underside of a prominent midrib.