This black-line drawing of the simplex glyph and notation representing the personal name Macuilaca (Five-Reed, or 5-Reed), shows five (macuilli) dots lined up vertically. On their left is a frontal view of vertical reed or cane (acatl) with round ends and three segments. This is a calendar name, with acatl being a day sign.
Some calendrical names in the Matrícula de Huexotzinco have lost their number element and some have lost their day signs, only retaining the numbers. Sometimes the tlacuilos make mistakes in rendering the numbers. See below. It is unclear whether the changes in calendrical names represent an effort to disguise them and avoid the displeasure of the clergy or whether the use of the tonalpohualli was organically fading. Calendrics were an important element in the Nahuas' religious view of the cosmos.
números, plantas, calendarios, fechas, días, tonalpohualli
macuil(li), five, https://nahuatl.wired-humanities.org/content/macuilli
aca(tl), reed or cane, https://nahuatl.wired-humanities.org/content/acatl
Diez Caña, o 10-Caña
Matrícula de Huexotzinco, folio 607r, World Digital Library, https://www.loc.gov/resource/gdcwdl.wdl_15282/?sp=296st=image.
This manuscript is hosted by the Library of Congress and the World Digital Library; used here with the Creative Commons, “Attribution-NonCommercial-ShareAlike 3.0 License” (CC-BY-NC-SAq 3.0).