• Circumscription of the south American moonwort botrychium (ophioglossaceae) 

      Meza Torres, Esteban I.; Stensvold, M. C.; Farrar, D. R.; Ferrucci, María Silvia (Taylor & Francis, 2017)
      The genus Botrychium (Ophioglossaceae) is comprised of about 30 widely distributed species. Because of their small size and few, yet variable, morphological characters, many questionable taxa have been described over the ...