• Effects of spine-shading on aspects of photosynthesis for three cactus species 

      De la Rosa Manzano, Edilia; Flores Rivas, Joel David; Delgado Sánchez, Pablo (2016-06)
      "We evaluated the effect of spine removal on three cactus species varying in spine-shading of stems. Turbinicarpus schmiedickeanus showed the greater spine shading (c. 61 %), followed by Mammillaria zephyranthoides (43 %), ...