Nasturtium (literally "nose-twister" or "nose-tweaker"), as a common name, refers to a genus of roughly 80 species of annual and perennial herbaceous flowering plants in the genus Tropaeolum.
They have showy, often intensely bright flowers (the intense color can make macrophotography quite difficult), and rounded, peltate (shield-shaped) leaves with the petiole in the center. The flowers have five petals (sometimes more), a three-carpelled ovary, and a funnel-shaped nectar tube in the back.
I found it interesting that the article says that photographing it using a macro lens is difficult. Maybe this turned out OK as the color is orange and not the bright red of my other nasturtiums.
This photograph is for Carolina in the Netherlands, a new blogger friend, who posted a wonderful picture of a yellow rose which you can find here - Brinkbeestphotos. She also has another blog where she writes about her life and about a country that I visited for a week and fell in love with: Brinkbeest in English. I thought I had a yellow rose photo to compliment hers, but the best I could do was the orange nasturtium.
And as for the photos from the Blue Ridge Parkway? Well, now I understand why professional photographers go on and on about light. The light was hard and harsh and so all 164 photos ended up in the recycle bin.