Gorelick R., Glandulicactus uncinatus var. wrightii (Cactaceae) with 15 cm spines, Journal of the Botanical Research Institute of Texas, 2021, 15(2):569-573, doi: 10.17348/jbrit.v15.i2.1162
A field note on exceptionally long spines of Glandulicactus uncinatus from Anthony’s Nose in the Franklin Mountains, Texas. It includes photographs from February 2020, a method for estimating length from a reference object and a perspective correction. It discusses variation in the armature of neighbouring plants and possible local influences.