Louisa Isabella Chaulk Baudinet, also known as Lucy Baudinet or Miss Baudinet (7 April 1825 – 13 February 1901) was an Australian botanical collector.
Louisa Isabella Chaulk Baudinet was born on 7 April 1825 in London to William Chaulk (later Baudinet) (c.1799–1865), and Augusta Louisa née Baudinet (1805–1873). She was the second of twelve children in the family. In 1829, the family migrated to Western Australia, and in 1831 to Tasmania. In 1838–1847, Baudinet's father was the first lighthouse keeper on Bruny Island, and in 1848–1865, on Deal Island in the Kent Group. After the death of her parents, Baudinet lived with her siblings and never married.
Baudinet collected specimens on Swan Island, where she lived with a brother who was lighthouse keeper there in 1869, and at Cape Portland and Clarke Island, 1883–1885. Her collections, approximately 114, have been lodged mainly at MEL, with others at HO and NSW. Swedish botanist Jacob Agardh identified Baudinet's algal specimens for Mueller.
- Baudinette, M. (1990). The Baudinet story: the story of the descendants of the Baudinet and Baudinette families 1777-1930s. Warrnambool.
- "Louisa Isabella Chaulk Baudinet". bionomia.net. Retrieved 6 October 2021.
- Maroske, Sara; Vaughan, Alison (2014). "Ferdinand Mueller's female plant collectors: a biographical register" (PDF). Muelleria. 32: 92–172.
- "Baudinet, Louisa (Lucy) Isabella Chaulk - biography". www.anbg.gov.au. Retrieved 6 October 2021.
- Royal Botanic Gardens (Vic.) (1955). Muelleria : an Australian journal of botany. Royal Botanic Gardens Victoria State Botanical Collection. [Melbourne, Australia] : National Herbarium of Victoria.
- "My Holiday Trip to Victoria and Tasmania". Australian Town and Country Journal. No. 8. New South Wales, Australia. 26 February 1870. p. 17. Retrieved 7 October 2021 – via National Library of Australia.
- "Baudinet Collections in AVH". Australasian Virtual Herbarium. Retrieved 7 October 2021.
- "New Town Charitable Institution". The Mercury. Vol. LXXV, no. 9426. Tasmania, Australia. 21 May 1900. p. 3. Retrieved 7 October 2021 – via National Library of Australia.