Here is a form of Trillium stamineum with good, darkly mottled foliage that was selected by Nearly Native Nursery. I have only had it a couple of years, but can already tell it's going to be a good clumper (like other stamineum). This is truly one of the most distinct and easily identified Trilliums and one that people immediately flock to when they see it. It is very hardy here and in the Midwest is one of the best garden plants in the genus. I would absolutely love to find ( or trade for) a yellow flowered form of this!
Below is another clone of T. stamineum that was given to me by a friend just this spring. This clone as collected by Fred Case and was considered by him to be one of the best forms of this species. The clump my plants were divided from was well over 100 stems. Very excited about this one!
Speaking of Fred Case plants, below is another one given directly to me by Fred himself and a plant I had long been interested in. Supposedly this is a naturally occurring hybrid: Trillium decipiens x Trillium underwoodii. As mentioned in his book and extolled by Fred himself, this was one of the few forms from the T. decipiens/underwoodii complex that was cold hardy in Saginaw, MI. This plant came directly from the Case garden where it was growing in heavy shade in a protected site. It has grown very well for since that time in a container.
A first time flowering Trillium for me this year is the rare and often confused Trillium viride. These plants were given to me by a friend in Illinois that collected them near Beardstown, Illinois. Apparently this population has suffered mightily and is in decline. These plants, after growing in my garden for two years, have substantially increased in size and vigor and appears well-adapted to my conditions. The first picture shows the flower the day it opened and the second a few days later.
Trillium viride. The foral fragrance is reminiscent of sweet shrub (Calycanthus floridus)
Trillium sessile is one of the most common Trillium species in the Columbus, Ohio region. Most populations have flowers that are maroon-red in color. In some populations there can be some striking flower color breaks that make for quite nice garden specimens. Here are a few of the best from this year.