| Festuca pratensis x Lolium perenne = x Festulolium loliaceum | GB, VC38 Warwickshire, Myton | Henry Bromwich | Charles Bailey | 6/1871 | MANCH |
| Iris foetidissima | GB, VC38 Warwickshire, Chesterton Wood | Henry Bromwich | Charles Bailey | 7/1864 | MANCH |
| Juncus inflexus x effusus = J. x diffusus | GB, VC38 Warwickshire, Honiley | Henry Bromwich | Charles Bailey | 9/1869 | MANCH |
| Malva pusilla | GB, VC38 Warwickshire, Milverton | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 9/1897 | BIRM |
+ | Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Balsall Common | Henry Bromwich | Charles Bailey | 1805 | MANCH |
+ | Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Myton | Henry Bromwich | Charles Bailey John Isaac Briquet | 9/1871 | MANCH |
+ | Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 9/1880 | MANCH |
+ | Mentha arvensis x aquatica = M. x verticillata | GB, VC38 Warwickshire, Honiley | Henry Bromwich | Charles Bailey John Isaac Briquet | 8/1878 | MANCH |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC38 Warwickshire, Haseley | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey John Isaac Briquet | 9/1886 | MANCH |
+ | Mentha piperita | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey | 1871 | MANCH |
+ | Mentha piperita var. subcordata | GB, VC38 Warwickshire, Balsall | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 7/9/1880 | MANCH |
+ | Mentha piperita var. piperita | GB, VC38 Warwickshire, Balsall | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 7/9/1880 | MANCH |
+ | Mentha spicata x suaveolens = M. x villosa | GB, VC38 Warwickshire | Henry Bromwich | Charles Bailey | 9/1874 | MANCH |
| Poa chaixii | GB, VC38 Warwickshire, Leek Wootton | Henry Bromwich | Charles Bailey | 6/1875 | BIRM |
+ | Potamogeton compressus | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 8/1886 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey Henry Bromwich | 8/1882 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey | 7/1864 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Budbrook | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 8/1886 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Hatton | Henry Bromwich | Charles Bailey | 8/1870 | MANCH |
| Potamogeton perfoliatus | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey | 8/1884 | MANCH |
| Rumex crispus x obtusifolius = R. x pratensis | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey | 9/1874 | MANCH |
| Rumex crispus x obtusifolius = R. x pratensis | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Bailey | 9/1874 | MANCH |
| Salix cinerea x phylicifolia = S. x laurina | GB, VC38 Warwickshire, Shrewley | Henry Bromwich | Charles Bailey | 5/1876 to 9/1876 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Kenilworth | Henry Bromwich | Botanical Society & Exchange Club of The British Isles Charles Bailey | | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Hatton | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 4/1887 to 8/1887 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Hatton | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 4/1887 to 8/1887 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Kenilworth | Henry Bromwich | Charles Bailey | 2/4/1878 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Kenilworth Chase | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 4/1881 to 9/1881 | MANCH |
| Setaria pumila | GB, VC38 Warwickshire, Warwick | Henry Bromwich Robert Large Baker | Charles Bailey | 7/1884 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Charles Bailey | 8/1866 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Charles Bailey | 8/1848 | MANCH |
+ | Stellaria palustris | GB, VC38 Warwickshire, Milverton | Henry Bromwich | Charles Bailey | 6/1867 | MANCH |
+ | Vicia parviflora | GB, VC38 Warwickshire, Bishop's Tachbrook | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 8/1899 | MANCH |
+ | Vicia parviflora | GB, VC38 Warwickshire, Moreton Morrell | Henry Bromwich | Charles Bailey | 8/1867 | MANCH |
+ | Vicia parviflora | GB, VC38 Warwickshire, Bishop's Tachbrook | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Bailey | 8/1899 | MANCH |
| Apera spica-venti | GB, VC38 Warwickshire, Guy's Cliffe | Henry Bromwich | Robert Large Baker | 8/1879 | BIRM |
| Gastridium ventricosum | GB, VC14 East Sussex, Balcombe | Henry Bromwich | Robert Large Baker | 8/1870 | BIRM |
| Sonchus asper | GB, VC38 Warwickshire, Milverton | Henry Bromwich | Botanical Exchange Club of The British Isles Robert Large Baker | 9/1886 | SLBI |
| Symphytum officinale | | Henry Bromwich | Robert Large Baker | | BIRM |
| Trifolium procumbens | GB, VC38 Warwickshire, Milverton | Henry Bromwich Robert Large Baker | Botanical Exchange Club of The British Isles | 7/1879 | SLBI |