Ruud de Block:
Ephedra ochreata Miers - BG Berlin-01
Ruud de Block:
Ephedra ochreata Miers - BG Berlin-03
Ruud de Block:
Ephedra major subsp. major (Syn. Ephedra nebrodensis Guss subsp. nebrodensis). - Orto Botanico di Cagliari - Sardinia