I was reading P. Softly's blog and she's been looking for cruciform shapes in nature. As an alternate, she posted a lovely photo of a jack-in-the-pulpit trinitarian photo.
It got me to thinking and then surfing for photos. Here are two for her....
The first was a file from an English seed catalog site with info describing the shapes of blossoms... "Cruciform" had this photo as an example.
The second is a "Cruxifix Fish." My old colleague in Illinois had one on his credenza that someone had given him years ago. If you like it, go to Ebay, baby! You can get anything on Ebay!