1. Botha, C.E.J., Evert, R.F., Cross, R.H.M., Marshall, D.M. (1982a) Comparative anatomy of matureThemeda triandra Forsk. leaf blades: a correlated light and electron microscopy study. J. S. Afr. Bot.48, 311?328
2. Botha, C.E.J., Evert, R.F., Cross, R.H.M., Marshall, D.M. (1982b) The suberin lamella, a possible barrier to water transport from the bundles to the mesophyll ofThemeda triandra. Protoplasma112, 1?8
3. Brovchenko, M.I., Slobodskaya, G.A., Chmora, S.N., Lipatova, T.F. (1976) Effects of CO2 and O2 on photosynthesis and photosynthesis-linked escape of assimilates into the void space of the leaf in sugar beet. Sov. Plant Physiol.23, 1042?1049
4. Cataldo, D.A. (1974) Vein loading: the role of the symplast in intercellular transport or carbohydrate between the mesophyll and minor veins of tobacco leaves. Plant Physiol.53, 912?917
5. Chonan, N., Kawahara, H., Matsuda, T. (1984) Ultrastructure of vascular bundles and fundamental parenchyma in relation to movement of photosynthate in leaf sheath of rice. Jap. J. Crop Sci.53, 435?444