Leaf anatomy of Cortaderia, as evident from transverse sections. A C. egmontiana (Moore 2677) B C. modesta (Glaziou 17913) C C. hieronymi (Garcia 563) D C. nitida (Laegaard 53121) E C. boliviensis (Beck 11273); F C. sericantha (Ramsay 967); G C. echinata (Peterson 21587) H C. bifida (Renvoize 4202) I C. hapalotricha (Laegaard 53305) J C. roraimensis (Maguire 60448). Structures referred to in the descriptions are labelled as follows: 1, multi-layered abaxial sub-epidermal collenchyma layer; 2, adaxial islands of collenchyma in the abaxial grooves; 3, chlorenchyma; 4, primary vascular bundle; 5, midrib.