Darlington, W. (1841). A discourse on the character, properties, and importance to man, of the natural family of plants called Gramineae, or true grasses: Delivered as a lecture before the class of the Chester County cabinet of natural science, Feb. 19, 1841. West-Chester, Penn.: [s.n.].

Darlington, William. A Discourse On the Character, Properties, and Importance to Man, of the Natural Family of Plants Called Gramineae, or True Grasses: Delivered As a Lecture Before the Class of the Chester County Cabinet of Natural Science, Feb. 19, 1841. West-Chester, Penn.: [s.n.], 1841.

Darlington, William. A Discourse On the Character, Properties, and Importance to Man, of the Natural Family of Plants Called Gramineae, or True Grasses: Delivered As a Lecture Before the Class of the Chester County Cabinet of Natural Science, Feb. 19, 1841. West-Chester, Penn.: [s.n.], 1841.