Xochipilli.

Headword: 
Xochipilli.
Principal English Translation: 

a deity; "Flower-Prince" (i.e. Nobleman); overlapped with and complemented Macuilxochitl; the heart-staff is characteristic

Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 111.

Attestations from sources in English: 

a solar fertility god (central Mexico, sixteenth century)
Thelma Sullivan, "Tlatoani and tlatocayotl in the Sahagún manuscripts," Estudios de Cultura Nahuatl 14 (1980), 225–238. See esp. p. 231.

The omixochitl (EPolianthus tuberosa)) was a plant associated with the deity Xochipilli.
Bernardo Ortiz de Montellano, "Las hierbas de Tláloc," Estudios de cultura náhuatl 14 (1980), 287–314, see p. 290.