Was studied the germination of Nolina parviflora (H.B.K.) Hemsl. Its range includes semiarid localites, forming part of the rosetofilous shrubland, mostly in the Hidalgo, Puebla, Oaxaca and Veracruz states. Were taken in account the following factors and levels: temperature (20, 25 and 30 °C), light (permanent and darkness), seed size (small -3.2 mm length and big -3.6 mm), and soaking as pregerminative treatment (during 24 h and without soaking). The seed has an ovoid shape, 3.4 mm length and 2.65 mm width. There were 59131 seeds per kilogram, 83.9% purity, and 9.8% humidity content, dry weight basis. The viability (flotation in water and tetrazolium tests) was equal to 100%. The following interactions were significant for germination: temperature and light (p = 0.0001), seed size and light (p = 0.069), and seed size and temperature (p = 0.0173). Germination was high without light at 20 (87.5%) and 25 °C (88.1%), declining at 30 °C (15.8%). Under permanent light, the higher the temperature, the lower the germination. For the germinative energy (number of days for reaching 75% of final germination), the interaction light and temperature was significant (p = 0.0001). At 20°C without light, it had a value of 15.5 days, and 19.7 days with light. At 25 °C, these values were 15.3 and 26 days, respectively, while at 30 °C, such values were 22.5 and 1.6 days, respectively. This results suggest that shaded microsites are appropriate for the germination of the seed of this species.