| Alnus serrulata | US, FL, Jackson County, Sneads | Robert K Godfrey | Florida State University, Robert K. Godfrey Herbarium | 8/2/1980 | FSU |
| Alnus serrulata | US, FL, Wakulla County, Sopchoppy | Robert K Godfrey | | 29/11/1958 | FSU |
| Alnus serrulata | US, FL, Wakulla County, Sopchoppy River | Robert K Godfrey | Florida State University, Robert K. Godfrey Herbarium | 25/10/1956 | FSU |
| Alnus serrulata | US, FL, Franklin County, Sumatra | Loran C Anderson | | 24/1/1986 | FSU |
| Alnus serrulata | US, FL, Gadsden County, Tallahassee | Robert K Godfrey | | 15/1/1955 | FSU |
| Alnus serrulata | US, FL, Liberty County, Telogia | Loran C Anderson | | 3/7/2001 | FSU |
| Alnus serrulata | US, FL, Liberty County, Torreya State Park | Robert K Godfrey | | 15/11/1964 | FSU |
| Alnus serrulata | US, FL, Liberty County, Torreya State Park | Robert K Godfrey | | 4/4/1972 | FSU |
| Alnus serrulata | US, FL, St. Johns County, Trout Creek | Robert K Godfrey | | 20/3/1976 | FSU |
| Alnus serrulata | US, FL, Holmes County, Westville | Paul L Redfearn Robert Kral | | 20/7/1956 | FSU |
| Alnus serrulata | US, FL, Gulf County, Wewahitchka | Daniel B Ward T. Myint | | 28/1/1962 | FSU |
| Alopecurus alpinus | GB, VC90 Angus, Caenlochan Glen | Herbert William Pugsley | Harold Stuart Thompson | 23/7/1923 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Clova | Douglas Montague Heath | Douglas Montague Heath | 7/7/1926 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Clova,Glen Dole | John Hutton Balfour | George Stephen West John Harbord Lewis William West | | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Glas Maol | Peter Ewing | Peter Ewing George Stephen West | 8/1884 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Glen Canness | Francis Buchanan White | Augustin Ley | 8/1871 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Glen Doll | | Augustin Ley | 1/7/1874 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, Glen Doll | Augustin Ley | Robert Large Baker | 7/1874 | BIRM |
| Alopecurus alpinus | GB, VC90 Angus, White Water | Francis Chalmers Crawford | Francis Chalmers Crawford Harold Stuart Thompson | 15/7/1890 | BIRM |
| Alopecurus alpinus | GB, VC92 South Aberdeenshire, Braemar | Douglas Montague Heath | Douglas Montague Heath | 2/8/1932 | BIRM |
| Alopecurus alpinus | GB, VC92 South Aberdeenshire, Braemar | Alexander Croall | George Stephen West | 7/1855 | BIRM |
| Alopecurus alpinus | GB, VC92 South Aberdeenshire, Glas Maol | Edward Charles Wallace | Harold Stuart Thompson | 1/7/1934 | BIRM |
| Alopecurus alpinus | GB, VC106 East Ross & Cromarty, Highlands of Scotland | Hewett Cottrell Watson | George Stephen West | | BIRM |
| Alternanthera polygonoides | US, FL, Lake County, Dade Lake | Angus Gholson | | 21/6/1973 | FSU |
| Alternanthera polygonoides | US, FL, Escambia County, Pensacola | Robert Kral Robert K Godfrey | | 28/9/1957 | FSU |
| Alternanthera sessilis | US, FL, Bay County, Big Bear Creek | Robert K Godfrey | | 27/10/1981 | FSU |
| Alternanthera sessilis | US, FL, Calhoun County, Blountstown | Loran C Anderson | | 25/4/2001 | FSU |
| Alternanthera sessilis | US, FL, Gulf County, Dead Lakes State Park | Loran C Anderson | Loran C Anderson | 21/7/1988 | FSU |
| Alternanthera sessilis | US, FL, Bay County, Karst Pond | Robert K Godfrey | | 25/7/1981 | FSU |
| Alternanthera sessilis | US, FL, Escambia County, Pensacola | James R Burkhalter | Florida State University, Robert K. Godfrey Herbarium | 29/5/2000 | FSU |
| Alternanthera sessilis | US, FL, Escambia County, Pensacola | James R Burkhalter | | 3/12/2005 | FSU |
| Alternanthera sessilis | US, FL, Leon County, Tallahassee | Loran C Anderson | | 15/6/1996 | FSU |
| Alternanthera sessilis | US, FL, Gulf County, Wewahitchka | Robert K Godfrey | Florida State University, Robert K. Godfrey Herbarium | 14/9/1976 | FSU |
| Alternanthera sessilis | US, FL, Gulf County, White City | Loran C Anderson | | 17/9/2005 | FSU |
| Alternanthera sessilis | US, FL, Liberty County | Loran C Anderson | Florida State University, Robert K. Godfrey Herbarium | 31/8/2013 | FSU |
+ | Alyssum tortuosum | | | | 17/7/1834 | MANCH |
+ | Alyssum utriculatum | GB, VC83 Midlothian, Edinburgh Cultivated | | John Hutton Balfour | | PTH |
| Amaranthus blitum | US, FL, Leon County, Tallahassee | Loran C Anderson | | 12/4/2000 | FSU |
| Amaranthus cannabinus | US, FL, Gulf County, Cape San Blas | Sidney McDaniel | | 21/6/1967 | FSU |
| Amaranthus chlorostachys | GB, VC18 South Essex, Barking | Richard Charles L'Estrange Burges | | 3/10/1952 | BIRM |