Henrik [Heinrich] Franz Alexander Baron von Eggers (4 December 1844 – 1903), was a Danish professional soldier and botanist.
After studies at the gymnasium in Odense he entered the Danish army as subaltern in 1864 and fought in the Danish-German war.
At the end of 1864 he joined the Imperial Mexican Volunteer Corps and fell into captivity of the Mexican Republicans at the end of the month-long siege of Oaxaca. He was freed in 1867, rejoined the Danish army as lieutenant and had himself posted in the Danish Antilles, where he served until his retirement, as captain, in 1885. In 1873 he married Mathilde Camilla Stakemann.
His retirement from the army marked the beginning of his career as botanist. He studied and published the flora of St. Croix, St. John, St. Thomas, Water Island and Vieques. He made numerous trips and collected extensively on virtually all the islands of the Greater and Lesser Antilles: Dominica in 1880, Puerto Rico in 1881 and 1883, Tortola, St. Kitts, the Dominican Republic and Turks in 1887, Haiti, Jamaica and the Bahamas in 1888–89 and Tobago, Trinidad, Grenada, St. Vincent and Barbados in 1889–90. He moved to Ecuador in 1891 where he stayed until 1897 making numerous collections. He had a hacienda at El Recreo, in the vicinity of San Vicente in Manabí province.
The plant genus Eggersia was named for him by Joseph Dalton Hooker.[1] The species Eggersia buxifolia (Hook.f.) is synonymous with Neea buxifolia (Hook.f.) Heimerl.[2] [3]