Monday 8 September 2014
Helianthus (sunflower)
is a genus of plants comprising about 52 species in the Asteraceae family, all of which are
native to North America. There is quite a bit of variability among the
perennial species that make up the bulk of the species in the genus. Some have
most or all of the large leaves in a rosette at the base of the plant and
produce a flowering stem that has leaves that are reduced in size. Source
