John Rusk:
J20150929-0061—Penstemon newberryi var sonomens 'St Helena'—RPBG
John Rusk:
J20151001-0009—Penstemon laetus—RPBG
John Rusk:
J20160602-0001—Penstemon spectabilis—RPBG
John Rusk:
J20160817-0044—Penstemon azureus—RPBG
John Rusk:
J20170608-0026—Penstemon laetus—RPBG—DxO
John Rusk:
J20171012-0014—Penstemon stephensii—RPBG—DxO
John Rusk:
J20171026-0041—Penstemon azureus—RPBG—DxO
John Rusk:
2017-12-24-15.25.54 ZS DMap Penstemon heterophyllus-1