Table 1. Morphological and anatomical comparison of Canastra with related taxa of Paniceae. Taxon Characters Canastra Arthropogon Altoparadisium Homolepis Streptostachys asperifolia Panicum sect. Laxa Panicum sect. Lorea Panicum sect. Prionitia Achlaena Anatomical type C3 C4 MS C4 MS C3 C3 C3 C3 C4 MS C4 MS Fusoid cells present absent absent present present present absent absent absent Distinctive Kranz Cells absent absent present absent absent absent absent absent present Compression of the spikelet dorsiventral lateral dorsiventral dorsiventral dorsiventral dorsiventral dorsiventral dorsiventral lateral Hairy callus absent present present absent absent absent absent absent present Stipe absent absent absent absent present, and torose absent absent absent present, and pointed Lower glume (LG) awned awned absent or awned muticous muticous muticous muticous muticous awned Relative length of the LG relative to spikelet 1/3 1/2-3/4 absent or reduced 1/1 2/3-4/5 1/3-2/4 1/2-4/5 1/2-3/4 reduced Nervation of LG 1-nerved 3-nerved 1-nerved 5-9-nerved 5-7-nerved 1-3-nerved 1-5-nerved 3-nerved 1-nerved Upper glume (UG) awned awned awned muticous muticous muticous muticous muticous awned Texture of UG herbaceous coriaceous herbaceous herbaceous herbaceous herbaceous herbaceous herbaceous coriaceous Lower flower present present absent present or absent absent present or absent present or absent present absent Upper anthecium cartilaginious hyaline hyaline indurated indurated membranous to indurate indurate indurate hyaline Hilum punctiform punctiform punctiform linear 1/1 linear 1/1 punctiform punctiform punctiform punctiform Back to Article