190 Novon are caespitose, with the upper anthecium conspic¬ icum (Poaceae: Panicoideae) in southern Africa. Monogr. Syst. Bot. Missouri Bot. Card. 25: 129— uously stipitate at its base. 156. Acknowledgments. We express gratitude to Ger- Hattersley, P. W. 1987. Variations in photosynthetic pathway. Pp. 49-64 in T. R. Soderstrom, K. W. rit Davidse for critical review of the paper, to Bruno Hilu, C. S. Campbell & M. E. Barkworth (editors), Manara for assistance with the Latin diagnosis, and Grass Systematics and Evolution. Smithsonian Insti¬ to Vladimiro Dudas for the illustrations. The first tution Press, Washington, D.C. author thanks the Guggenheim Foundation for a Meert, M. & P. Goetghebeur. 1979. Comparative floral fellowship that allowed him to conclude this paper morphology of Bisboeckelereae and Cariceae (Cy- peraceae) on the basis of the anthoid concept. Bull. at the Missouri Botanical Garden. Soc. Roy. Bot. Belgique 112: 128-143. Metcalfe, C. R. 1960. Anatomy of the Monocotyledons. Literature Cited I. Gramineae. Clarendon Press, Oxford. Ohsugi, R. & T. Murata. 1986. Variations in the leaf Cabrera, A. L. & A. Willink. 1973. Biogeografia de anatomy among C4 Panicum species. Ann. Bot. (Lon¬ America Latina, 2nd edition, Secretaria General de don) 58: 443-453. la Organizacion de los Estados Americanos. Wash¬ Ohsugi, R., T. Murata & N. Chonan. 1982. C4 syn¬ ington, D.C. drome of the species in the Dichotomifiora group of Camara Hernandez, J. & S. Gambino. 1990. Ontogeny the genus Panicum. Bot. Mag. (Tokyo) 595: 339- and morphology of Zea diploperennis inflorescences 347. and the origin of maize (Zea mays ssp. mays). May- Sass, J.E. 1940. Elements of Botanical Microtechnique. dica 35: 113-124. McGraw-Hill, New York & London. Davidse, G. & R. P. Ellis. 1987. Arundoclaytonia, a Schmid, R. & M. D. Turner. 1977. Contrad 70, an new genus of the Steyermarkochloeae (Poaceae: effective softener of herbarium material for anatom¬ Arundinoideae) from Brazil. Ann. Missouri Bot. Card. ical study. Taxon 26: 551-552. 74: 479-490. Zuloaga, F. O. 1987. Systematics of the New World Doell, J. C. 1877. Paniceae. In: C. F. P. von Martius species of Panicum (Poaceae: Paniceae). Pp. 287- (editor). Flora Brasiliensis 2 (2): 33-342. 306 in T. R. Soderstrom, K. W. Hilu, C. S. Campbell Ellis, R. P. 1977. Distribution of the Kranz Syndrome & M. E. Barkworth (editors), Grass Systematics and in the southern African Eragrostoideae and Panicoi- Evolution. Smithsonian Institution Press, Washing¬ deae according to bundle sheath anatomy and cy¬ ton, D.C. tology. Agroplantae 9: 73-110. -. 1988. Leaf anatomy and systematics of Pan-