Several individuals locally; n=11 during meiosis of microgametogenesis (22 May 2001) from individual cultivated at Chino Valley, AZ; flowers photographed and pressed 18 May 2009 from individual transplanted (potted) to Chino Valley, Arizona.
Four live specimens collected; n=11 during meiosis of microgametogenesis (22 May 2001) from individual cultivated at Chino Valley, AZ.
Voucher for chromosome determination in: Baker, M. A. 2006. Plant Systematics and Evolution. 258:63-83.