Key to Linaceae genera in Mexico 1. Petals with reddish venation, presence of basal adaxial appendages; carpels, styles, and stigmata 2 or 3; fruit dehiscent into 4 or 6 segments ........................................................................................................................................................................ Hesperolinon - Petals without reddish venation, absence of basal daxial appendages; carpels, styles, and stigmata 5; fruit dehiscent into 5 or 10 segments .................................................................................................................................................................................... Linum

Published as part of González-Velasco, Juan, Burgos-Hernández, Mireya, Galván-Escobedo, Iris G. & Castillo-Campos, Gonzalo, 2022, Taxonomic update of the flax family in Mexico, pp. 141-184 in Phytotaxa 549 (2) on page 143, DOI: 10.11646/phytotaxa.549.2.3, http://zenodo.org/record/6622753