155392 Pineapple-weed - Matricaria discoidea. Bright green, hairless perennial that smells strongly of pineapple when crushed. Grows on disturbed ground, paths and tracks. FLOWERS comprise yellowish green disc florets only (no ray florets) and these are borne in rounded to conical heads, 8-12mm long, the receptacles of which are hollow (May-Nov). FRUITS are achenes. LEAVES are finely divided and feathery.