India, and undertook expeditions to Nepal, West Hindustan, and lower Burma. During 1837 and 1838, Nathaniel Wallich served as professor of botany at Calcutta Medical College. Two years later in 1821, he was coferred the degree of honorary doctor at the University of Copenhagen and in 1826, elected member of the Royal Danish Academy of Sciences and Letters. He was elected a Fellow of the Royal Society of Edinburgh in 1822 his proposer being John Yule. This was followed in 1828 by his being elected a Fellow of the Royal Society of London. Retirement, death, and legacy Wallich had suffered deteriorating health for many years, at one time contracting cholera, and he was finally obliged to resign his post in 1846 and retire to London, where he became vice-president of the Linnean Society, of which he had been a fellow since 1818. Wallich remained in London until his death seven years later. He died at Gower Street in Bloomsbury on 28 April 1854 aged 68. He was buried in Kensal Green Cemetery. Part of Wallich's herbarium collections held at Kew, and known as the Wallich Herbarium, is the largest separate herbarium. Another part of the collection is the Central National Herbarium of the Botanical Survey of India in Calcutta, making in all about 20,500 specimens. Wallich is also credited with the authorship of 35 papers, mostly botanical. Family Wallich's was the maternal uncle of the Danish zoologist Theodore Cantor. Wallich married Juliane Marie Hals (born 1797), later known as Mary Ann, on 30 May 1812, but she died only two months later. In 1815, Wallich married Sophia Collings (1797–1876). Together, they had seven children, two of whom died in infancy. Their eldest son George Charles became a distinguished oceanographer. Gallery Species named for Nathaniel Wallich Allium wallichii (jimbur or Himalaya onion) Apostasia wallichii Brahmaea wallichii Bulbophyllum wallichii Castanopsis wallichii Catreus wallichii (cheer pheasant or Wallich's pheasant) Clerodendrum wallichii Convolvulus wallichianus Debregeasia wallichiana Dioscorea wallichii Diospyros wallichii Dombeya wallichii Dryopteris wallichiana Eriophyton wallichii Euphorbia wallichii Geranium wallichianum Horsfieldia wallichii Hoya wallichii Koilodepas wallichianum Ligusticum wallichii (Szechuan lovage) Lilium wallichianum Meconopsis wallichii Memecylon wallichii Nageia wallichiana Pinus wallichiana (blue pine or Bhutan pine) Pteris wallichiana Rhododendron wallichii Rotala wallichii Rubus wallichii Salacca wallichiana Sarcococca wallichii Schima wallichii Schefflera wallichiana Sorbus wallichii Strobilanthes wallichii (Kashmir acanthus, hardy Persian shield, wild petunia or kandali) Taxus wallichiana (Himalayan yew) Ternstroemia wallichiana Tylecodon wallichii Thysia wallichii