Analysis of the biodiversity of hawthorn (Crataegus spp.) from the morphological, molecular, and ethnobotanical approaches, and implications for genetic resource conservation in scenery of increasing cultivation: the case of Mexico

1. Betancourt-Olvera, M.
2. Nieto-Ángel, R.
3. Urbano, B.
4. González-Andrés, F.