Arroyo-Pérez E., Jiménez-Sierra C. L., Zavala-Hurtado J. A., Flores-Rivas J., Salgado-Ugarte I. H., Fenología, sincronía floral y éxito reproductivo de Neolloydia conoidea (Cactaceae), Botanical Sciences, 2019, 97(4):579-587, doi: 10.17129/botsci.2184
Two years of flowering observations in a Neolloydia conoidea population in Tolimán, Querétaro. Weekly censuses distinguished six flowering waves in 2015 and five in 2016. The authors compare the Augspurger and Marquis synchrony indices and the proportions of flowers developing fruits and ovules forming seeds. They consider reproduction spread over time as a hypothesis for reducing risk in a variable environment.