Name
- Leschenault de la Tour, Louis Théodore, Naturalist1
- Link, Heinrich Friederich1
- Linnaeus, Carl, Swedish botanist; of Sloane MS 40541
- London, John Claudius, of Add MS 319781
- Lowe, Joseph, of Add MS 324411
- Lowe, Richard Thomas, Reverend; of Madeira1
- Lysons, Daniel, MD1
- Macleay, George, of Sydney, N S Wales1
- Macmillan, J-1
- Macquarie, Lachlan, Governor of New South Wales1
- Martin, Colladon, of Geneva1
- Martyn, John, Lieutenant; of the Royal African corps1
- Marum, Martin, Sécrétaire Perpétuel de la Société Hollandaise1
- Mathews, Andrew, Botanical Collector in Peru1
- Mease, James, MD, of Philadelphia, USA1
- Milligan, Joseph1
- Mitchell, Thomas Livingstone, Mayor, afterwards Colonel and Kt1
- Moon, Alexander1
- Morley, William, correspondent of J. L. Tuxford, fl 18541
- Murchison, Roderick Impey, 1st Baronet, geologist, 1792-18711