acatl (Mdz2r)
This example of iconography from the Codex Mendoza shows what appears to be an acatl (reed) plant with its roots above the ground. This provides a comparison for other acatl plants that are elements of compound hieroglyphs. The plant grows largely upright, but it has branches or leaves that curve out horizontally, with the tips pointing upwards. The plant is shown as a turquoise blue, and the roots here are white.
Wikipedia has published a photo of acatl plants.
Stephanie Wood
by 1553 at the latest
reeds, cañas
aca(tl), reed, cane, reed-arrow, reed-dart, https://nahuatl.wired-humanities.org/content/acatl
la caña
Stephanie Wood
Codex Mendoza, folio 2 recto, https://codicemendoza.inah.gob.mx/inicio.php?lang=english
Original manuscript is held by the Bodleian Libraries, University of Oxford, MS. Arch. Selden. A. 1; used here with the UK Creative Commons, “Attribution-NonCommercial-ShareAlike 3.0 License” (CC-BY-NC-SAq 3.0)