 |
Plants usually less than 20 cm high; NOT
[Plants usually more than 20 cm high] |
 |
Leaves mainly basal |
 |
Stem leaves 0-3; NOT [Stem leaves
numerous] |
 |
Leaves entire or merely 3-toothed at
apex; NOT [Leaves deeply dissected into at least 2 or 3 lobes] |
 |
Heads solitary; NOT [Heads 2 to many, or
both] |
 |
Heads with well-developed ray florets;
NOT [Heads discoid or with short inconspicuous ray florets] |