GR524, brandegeei, Mexico, Baja California, Navidad
GR530, brandegeei, Mexico, Baja California, San Pedrito
GR039, engelmannii, USA, Arizona, Grand Canyon
GR027, maritimus, Mexico, Baja California, El Socorro Ranch
GR028, maritimus, Mexico, Baja California, El Socorro Ranch
GR043, rigidissimus, USA, Arizona, Warsaw Canyon
GR009, triglochidiatus, USA, Colorado, San Isobel Nat. Forest
GR505, triglochidiatus coccineus, USA, Colorado, Unaweep Canyon
GR506, triglochidiatus inermis, USA, Colorado, Unaweep Canyon
GR008, viridiflorus, USA, Colorado, San Isobel Nat. Forest
GR604, viridiflorus chloranthus, USA, Texas, Franklin Mts.
GR608, viridiflorus chloranthus, USA, New Mexico, Soledad Canyon