Psilostrophe cooperi (A.Gray) Greene

Plants of Arizona
Asteraceae
Psilostrophe cooperi (Gray) Greene
USA. Arizona. Pinal County.
Ironwood Forest National Monument; along
power line road which intersects a narrow
east-west drainage on the west side of the
Sawtooth Mountains; Sonoran uplands
dominated by Acacia constricta, creosote,
little leaf palo verde; gentle slope with
gravelly limestone? soils; common subshrub
visited by numerous pollinators; ray
flowers bright yellow.
32.60581°, -111.77924°
Elevation: 1668 ft 510 m
Associated species: Larrea tridentata,
Acacia constricta, A. greggii, Carnegiea
giganteaParkinsonia microphylla, Krameria
bicolor, Ambrosia deltdoidea, A.
ambrosioides, A. confertiflora, Lycium
fremontii, Acourtia wrightii, Prosopis
juliflora velutina, Heteropogon contortus,
Tetraclea coulteri, Psilostrophe cooperir
Senna covesii, Abutilon malacum, Nicotiana
obtusifolia f Baccharis brachyphylla,
Tidestroemia lanuginosa, Pectis papposa,
Olneya tesota
Liz Makings 4995	19 October 2016
with: Dave Brown
ASU Herbarium
03152238