, ?Resurrection and emendation of Macrochloa (Gramineae: Stipeae)?, Botanical Journal of the Linnean Society, vol. 144, pp. 483-495, 2004.

M.  Negbi, ?The structure and function of the scutellum of the Gramineae?, Botanical Journal of the Linnean Society, vol. 88, pp. 205-222, 1984.

R. C.  Carolin, Jacobs, S. W. L., and Vesk, M., ?The structure of the cells of the mesophyll and parenchymatous bundle sheath of the Gramineae?, Botanical Journal of the Linnean Society, vol. 66, pp. 259-275, 1973.

J. N.  Brunken, ?Morphometric variation and the classification of Pennisetum section Brevivalvula (Gramineae) in tropical Africa?, Botanical Journal of the Linnean Society, vol. 79, pp. 51-64, 1979.