Ambrosia trifida var. aptera (DC.) Kuntze, 1891 |
Ambrosia x platyspina (Seaman) Strother & B.G. Baldwin, 2002 |
Ambrosiinae Less., 1830 |
Amellus L., 1759 |
Amellus villosus Pursh, 1814 |
Amolinia R.M. King & H. Rob., 1972 |
Amolinia heydeana (B.L. Rob.) R.M. King & H. Rob., 1972 |
Amphiachyris Nutt., 1840 |
Amphiachyris dracunculoides (DC.) Nutt., 1840 |
Amphidoxa DC., 1838 |
Anacyclus L., 1753 |
Anacyclus australis Sieber ex Spreng., 1826 |
Anaitis DC., 1836 |
Anaitis acapulcensis DC., 1836 |
Anaphalis DC., 1838 |
Anaphalis aecidiocephala Grierson, 1972 |
Anaphalis concinna (A. Gray) Grierson, 1972 |
Anaphalis margaritacea (L.) Benth. & Hook. f., 1873 |
Ancistrocarphus A. Gray, 1868 |
Ancistrocarphus filagineus A. Gray, 1868 |