Locality: Phoenix, Arizona, USA (33.450000, -112.072000)

Abstract: This checklist was created by searching the ASU Herbarium for plants growing within a 40 mile radius of central Phoenix. The region is divided into four quarters (Q 1-4, clockwise) bounded by north-south coursing freeways I-17 and I-10 and by east-west coursing freeways I-10 and Superstition Freeway (US 60). Additional sites refer to local flora studies:

• ASU = Arizona State University Main (Arboretum)
• BH = Buckeye1 Hills Semi-regional Park
• CC = Camp Creek area
• DBG = Desert Botanical Garden, Phoenix
• FARM = South Mountain Farm, Phoenix
• HAS = Hassayampa River Preserve
• LP = Lake Pleasant Regional Park
• MDM = McDowell Mountains Regional Park
• PAP = Papago Park, Phoenix (exclusive of Desert Botanical Garden)
• SERP = Sierra Estrella Mountains Regional Park
• SOMT = South Mountain Park
• STM = San Tan Mountain Semi-regional Park
• SUPM = Superstition Mountains Wilderness Area
• TRP = Thunderbird Semi-regional Park
• UM = Usery Mountains Semi Regional Park
• WTM = White Tank Mountains Regional Park