Sanvitalia angustifolia
A procumbent plant found in Mexico, from central Chihuahua south to northern Guerrero. Compared to Sanvitalia abertii, the phyllaries are wider & overlapping, and the spines of the ray cypselae are much longer.
A flowering stem at San Francisco, along the highway ca. 15 km north of Ciudad Chihuahua, Mexico, 5 Sep 2009.
At pseudanthium, north of Ciudad Chihuahua, 5 Sep 2009.
Side view of a pseudanthium, north of Ciudad Chihuahua, 5 Sep 2009.
Immature ray cypselae, north of Ciudad Chihuahua, 5 Sep 2009.
Plant habit, north of Ciudad Chihuahua, 5 Sep 2009.