Asteraceae
Burr not formed around the fruits at maturity Florets all tubular or filiform and tubular (Fig. 41) or; florets with ligule present but the ligule less than 3mm Pappus absent or consisting of a few short spines, or of rigid bristles or scales, or reduced to a short rim, or the cypselas surmounted by a hardened spiny style (Fig. 41) Cypselas surmounted by a spiny hardened style or a pappus of spines, rigid bristles or scales