Quentin C. B. Cronk

Oldenlandia adscensionis was a species of plant in the family Rubiaceae. It was endemic to Ascension Island. It became extinct due to habitat loss; not seen since 1888.

Cyrtandra cleopatrae is a species of plant in the family Gesneriaceae endemic to the Philippines. It is a tropical shrub having recaulescent inflorescences composed of multiple purpled flowers that emerge on the plant stem from stubby shoots. It was first collected for science during a 1998 expedition sponsored by the Royal Botanic Garden Edinburgh, from a location in Palawan called Cleopatra's Needle (elev. 1550m), thus the specific epithet "cleopatrae". The taxon was first published in the Edinburgh Journal of Botany in 2001.

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Acalypha rubrinervis (string tree or stringwood) is an extinct plant in the spurge family (Euphorbiaceae), from the island of Saint Helena in the South Atlantic Ocean. It was called string tree on account of the thin pendulous inflorescences which resembled red strings. Disturbance following human settlement on the island destroyed its habitat, and it was last seen in the 19th century. It is thus one of a number of island plants to have been driven to extinction by human activity (see List of extinct plants). The genus to which it belongs, Acalypha, is a large one and includes island endemics

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