| Allium triquetrum | GB, VC113 Channel Islands, Guernsey | Cecil Victor Boley Marquand | Botanical Exchange Club of The British Isles Douglas Montague Heath Frederick Robinson | 4/1913 | BIRM |
| Crassula tillaea | GB, VC113 Channel Islands, Guernsey | C W S K Pigot | Botanical Exchange Club of The British Isles Cecil Victor Boley Marquand Douglas Montague Heath Frederick Robinson | 4/1913 | BIRM |
| Hirschfeldia incana | GB, VC113 Channel Islands, Guernsey,Paradis | Cecil Victor Boley Marquand | Douglas Montague Heath Frederick Robinson | 8/1915 | BIRM |
| Limonium normannicum | GB, VC113 Channel Islands, Alderney | Cecil Victor Boley Marquand | George Stephen West John Cryer | | BIRM |
+ | Impatiens glandulifera | GB, VC3 South Devon, On the banks of the Dart in a wild part of Dartington Estate | Cecil Victor Boley Marquand | | 31/1/1919 | BM |
+ | Impatiens glandulifera | GB, VC3 South Devon, On the banks of the Dart in a wild part of Dartington Estate | Cecil Victor Boley Marquand | | 31/1/1919 | BM |
| Carex binervis | GB, VC110 Outer Hebrides, Tamnasbhal | Cecil Victor Boley Marquand | | 27/7/1939 | E |
| Ajuga reptans | GB, VC17 Surrey, Bookham | Cecil Victor Boley Marquand Edgar Wolston Bertram Handsley Milne-Redhead | | 30/5/1931 | K |
| Ajuga reptans | GB, VC17 Surrey, Bookham | Cecil Victor Boley Marquand Edgar Wolston Bertram Handsley Milne-Redhead | | 30/5/1931 | K |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Cecil Victor Boley Marquand | Botanical Exchange Club of The British Isles Cecil Victor Boley Marquand | 8/1912 | K |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey,Grande Mare | Cecil Victor Boley Marquand | | 21/4/1913 | K |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey,Grande Mare | Cecil Victor Boley Marquand | Botanical Exchange Club of The British Isles Albert Bruce Jackson | 9/1913 | K |
| Groenlandia densa | GB, VC13 West Sussex, Washington | Cecil Victor Boley Marquand Edgar Wolston Bertram Handsley Milne-Redhead | | 31/5/1930 | K |
| Groenlandia densa | GB, VC13 West Sussex, Washington | Cecil Victor Boley Marquand Edgar Wolston Bertram Handsley Milne-Redhead | | 31/5/1930 | K |
| Ligustrum vulgare | GB, VC10 Isle of Wight | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 20/10/1930 | K |
| Mentha aquatica | GB, VC10 Isle of Wight, Blackgang Chine | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 13/4/1930 | K |
| Mentha aquatica | GB, VC17 Surrey, Richmond Park | Arthur Keith Jackson Cecil Victor Boley Marquand Herbert Kenneth Airy Shaw Noel Yvri Sandwith | | 14/9/1934 | K |
| Mentha suaveolens | GB, VC10 Isle of Wight, Blackgang | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 20/10/1930 | K |
| Mentha suaveolens | GB, VC10 Isle of Wight, Blackgang Chine | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 20/10/1930 | K |
| Plantago coronopus | GB, VC10 Isle of Wight, Blackgang Chine | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 10/11/1930 | K |
| Plantago lanceolata | GB, VC10 Isle of Wight | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 11/11/1930 | K |
| Thymus praecox subsp. arcticus | GB, VC10 Isle of Wight, Blackgang Chine | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 13/4/1930 | K |
| Veronica polita | GB, VC10 Isle of Wight, Blackgang Chine | Cecil Victor Boley Marquand Thomas Archibald Sprague | | 19/10/1930 | K |
+ | Impatiens glandulifera | GB, VC3 South Devon, Banks of Dart, Dartington Estate, Sout Devon | Cecil Victor Boley Marquand | | 14/8/1918 | LIV |
+ | Arabis petraea | GB, VC104 North Ebudes, Sgurr nan banachdich | Cecil Victor Boley Marquand | Botanical Society & Exchange Club of The British Isles | 8/7/1925 | MANCH |
+ | Bromus interruptus | GB, VC17 Surrey, Headley | Cecil Victor Boley Marquand Charles Edward Hubbard H K Shaw | Royal Botanical Gardens, Kew Catherine Muriel Rob | 16/6/1932 | MANCH |
+ | Cynodon dactylon | GB, VC113 Channel Islands, Guernsey,Vazon Bay | Cecil Victor Boley Marquand | Botanical Society & Exchange Club of The British Isles Cecil Victor Boley Marquand Charles Bailey | 9/1913 | MANCH |
| Epipactis palustris | GB, VC44 Carmarthenshire, Pendine | Cecil Victor Boley Marquand | Botanical Society & Exchange Club of The British Isles Cecil Victor Boley Marquand | 1/8/1919 | MANCH |
+ | Impatiens glandulifera | GB, VC3 South Devon, Dartington Estate | Cecil Victor Boley Marquand | | 14/8/1918 | MANCH |
+ | Isoetes histrix | GB, VC113 Channel Islands, Guernsey,L'Ancresse Common | Cecil Victor Boley Marquand | Botanical Society & Exchange Club of The British Isles Cecil Victor Boley Marquand Charles Bailey | 8/1912 | MANCH |
+ | Romulea columnae | GB, VC113 Channel Islands, Guernsey,Moulin Huet Bay | | Cecil Victor Boley Marquand Charles Bailey | 4/1913 | MANCH |
+ | Impatiens glandulifera | GB, VC3 South Devon, Dartington Estate | Cecil Victor Boley Marquand | | 14/8/1918 | NMW |
+ | Impatiens glandulifera | GB, VC3 South Devon, Dartington Estate | Cecil Victor Boley Marquand | | 14/8/1918 | NMW |
+ | Impatiens glandulifera | GB, VC3 South Devon, South Devon,Banks of the Dart above Dartington estate | Cecil Victor Boley Marquand | | 14/8/1918 | OXF |
+ | Impatiens glandulifera | GB, VC3 South Devon, South Devon,Banks of the Dart above Dartington estate | Cecil Victor Boley Marquand | | 14/8/1918 | OXF |
| Allium triquetrum | GB, VC113 Channel Islands, Guernsey | Cecil Victor Boley Marquand | William Robert Sherrin | 21/4/1913 | SLBI |
| Anagallis arvensis | Guernsey, Castel | Cecil Victor Boley Marquand | Cecil Victor Boley Marquand William Robert Sherrin | 7/1912 | SLBI |
| Bupleurum baldense | GB, VC113 Channel Islands, Alderney | Cecil Victor Boley Marquand | William Robert Sherrin | 5/1920 | SLBI |
| Callitriche truncata | GB, VC113 Channel Islands, Guernsey | Cecil Victor Boley Marquand | | 8/1912 | SLBI |
| Centaurium pulchellum | GB, VC113 Channel Islands, Guernsey, Cobo Bay | Cecil Victor Boley Marquand | Richard Barker Ullman | 13/9/1913 | SLBI |