"[2] He studied natural history under Louis Agassiz on Penikese Island in 1875,[citation needed] and in the Harvard Summer School in 1876.

[citation needed] He was appointed botanical collector for the university, received his master's degree in 1876, and was promoted to assistant professor of botany.

[1]: 70–1 His important published works include The Cayuga Flora (1886), A Catalogue of the Flowering Plants and Vascular Cryptograms found in and near Lackawanna and Wyoming (1892), The Genus Phyllospadix, and Vitality of the Sequoia gigantea.

[1]: 70–1  In 1901 the California Legislature passed an enabling act whereby 3,800 acres (1,500 ha) of land were purchased by the state in the next year to preserve the coastal redwood forest throughout the Santa Cruz Foothills area.

[1]: 70–1 In 1913, Stanford University published a "Dudley Memorial Volume" containing a paper by the then late Professor and appreciations, and contributions by friends and colleagues.