Narrow-leaf sunflower The narrow-leaf sunflower, Helianthus angustifolius, is a beautiful addition to a natural area of the yard where it can ramble and spread.

Some of the most interesting research described in these papers shows how Helianthus would hold station at a sub-L1 point while still having its solar sail fully deployed.

2. Sunflower Dartmouth This scan of the lower leaf of the Helianthus annuus looks a little like something out of a sci-fi movie.

For those who enjoy starting plants from seed, the annual Silver-Leaf Sunflower (Helianthus argophyllus) a native of Texas, Florida and North Carolina, is a spectacular annual sunflower.