| Carex hostiana | IE, VCH28 Co. Sligo, Benbulbin | Micheline Joan Sheehy Skeffington | | 11/6/1981 | GALW |
| Carex hostiana | IE, VCH28 Co. Sligo, Mullaghmore | Micheline Joan Sheehy Skeffington | | 5/7/1986 | GALW |
| Carex lasiocarpa | IE, VCH6,VCH7, Newcastle | Micheline Joan Sheehy Skeffington | | 13/7/1986 | GALW |
| Carex lasiocarpa | IE, VCH16 West Galway, Galway, Newcastle | Micheline Joan Sheehy Skeffington | | 13/7/1986 | GALW |
| Carex lasiocarpa | IE, VCH23 Westmeath, Scragh Bog | Micheline Joan Sheehy Skeffington | | 11/6/1986 | GALW |
| Carex lasiocarpa | IE, VCH23 Westmeath, Scragh Bog | Micheline Joan Sheehy Skeffington | | 11/6/1986 | GALW |
| Carex nigra | IE, VCH1 South Kerry, Killarney | Micheline Joan Sheehy Skeffington | | 9/6/1983 | GALW |
| Carex nigra | IE, VCH1 South Kerry, Killarney | Micheline Joan Sheehy Skeffington | | 9/6/1983 | GALW |
| Carex otrubae | IE, VCH17 North-east Galway, Lough Atalia | Micheline Joan Sheehy Skeffington | | 23/6/1983 | GALW |
| Carex ovalis | IE, VCH9 Co. Clare, Lisdoonvarna | Micheline Joan Sheehy Skeffington | | 11/6/1981 | GALW |
| Carex paniculata | IE, VCH9 Co. Clare, Lough Goller | Micheline Joan Sheehy Skeffington | | 11/6/1981 | GALW |
| Carex remota | IE, VCH4,VCH5, County Cork | Micheline Joan Sheehy Skeffington | | 6/1980 | GALW |
| Carex rostrata | IE, VCH2 North Kerry, Killarney | Micheline Joan Sheehy Skeffington | | 9/6/1983 | GALW |
| Carex rostrata | IE, VCH26 East Mayo, Bunnyconnellan | Micheline Joan Sheehy Skeffington | | 28/5/1981 | GALW |
| Carex sylvatica | IE, VCH28 Co. Sligo, Knockarea Glen | Micheline Joan Sheehy Skeffington | | 28/5/1981 | GALW |
| Carex vesicaria | IE, VCH11 Co. Kilkenny, Freshford | Micheline Joan Sheehy Skeffington | | 14/6/1986 | GALW |
| Cerastium arcticum | GB, VC90 Angus, Caenlochan | Micheline Joan Sheehy Skeffington | | 23/7/1986 | GALW |
| Cerastium arvense | IE, VCH9 Co. Clare, Eararna | Micheline Joan Sheehy Skeffington | | 12/5/1981 | GALW |
| Cerastium diffusum | IE, VCH16 West Galway, Galway | Micheline Joan Sheehy Skeffington | | 29/4/1983 | GALW |
| Cerastium diffusum | IE, VCH16 West Galway, Killeaney | Micheline Joan Sheehy Skeffington | | 12/5/1981 | GALW |
| Cerastium diffusum | IE, VCH27 West Mayo, Belmullet | Micheline Joan Sheehy Skeffington | | 19/7/1981 | GALW |
| Cerastium diffusum | IE, VCH28 Co. Sligo, Rosses Point | Micheline Joan Sheehy Skeffington | | 28/5/1981 | GALW |
| Cerastium fontanum | GB, VC90 Angus, Caenlochan | Micheline Joan Sheehy Skeffington | | 23/7/1986 | GALW |
| Cerastium fontanum subsp. scoticum | GB, VC90 Angus, Meikle Kilrannoch | Micheline Joan Sheehy Skeffington | | 23/7/1986 | GALW |
| Cerastium fontanum subsp. scoticum | GB, VC90 Angus, Meikle Kilrannoch | Micheline Joan Sheehy Skeffington | | 22/7/1986 | GALW |
| Chenopodium album | IE, VCH16 West Galway, Nuns Island | Micheline Joan Sheehy Skeffington | | 7/10/1983 | GALW |
| Cochlearia danica | IE, VCH6 Co. Waterford, Kilfarrasy | Micheline Joan Sheehy Skeffington | Trinity College, Dublin | 18/5/1980 | GALW |
| Cochlearia danica | IE, VCH16 West Galway, Galway | Micheline Joan Sheehy Skeffington | | 18/4/1983 | GALW |
| Cochlearia danica | IE, VCH21 Co. Dublin, Howth | Micheline Joan Sheehy Skeffington | Trinity College, Dublin | 9/6/1979 | GALW |
| Cochlearia danica | IE, VCH21 Co. Dublin, Howth | Micheline Joan Sheehy Skeffington | | 9/6/1979 | GALW |
| Cochlearia officinalis subsp. scotica | IE, VCH9 Co. Clare, Eararna | Micheline Joan Sheehy Skeffington | | 12/5/1981 | GALW |
| Cochlearia officinalis subsp. scotica | IE, VCH35 West Donegal, Kincaslough | Micheline Joan Sheehy Skeffington | | 16/6/1979 | GALW |
| Cochlearia pyrenaica | GB, Perthshire, Caenlochan | Micheline Joan Sheehy Skeffington | | 23/7/1986 | GALW |
| Cochlearia pyrenaica subsp. alpina | IE, VCH28 Co. Sligo, Benbulbin | Micheline Joan Sheehy Skeffington | | 10/6/1981 | GALW |
| Coronopus didymus | IE, VCH16 West Galway, Galway | Micheline Joan Sheehy Skeffington | | 18/4/1983 | GALW |
| Coronopus didymus | IE, VCH20 Co. Wicklow, Wicklow | Micheline Joan Sheehy Skeffington | Irish Biogeographical Society | 19/5/1979 | GALW |
| Coronopus squamatus | IE, VCH15 South-east Galway, Craughwell | Micheline Joan Sheehy Skeffington | | 20/6/1984 | GALW |
| Cruciata laevipes | FR, Baisieux | Micheline Joan Sheehy Skeffington | | 21/8/1981 | GALW |
| Cryptogramma crispa | GB, VC90 Angus, Caenlochan | Micheline Joan Sheehy Skeffington | | 23/7/1986 | GALW |
| Cystopteris fragilis | IE, VCH17 North-east Galway, Annaghdown | Micheline Joan Sheehy Skeffington | | 21/6/1981 | GALW |