Penstemon leonardii is a Penstemon found through central Utah. I grow Penstemon leonardii var. higginsii in my garden. This variety is found in the Southwestern corner Utah barely crossing over the borders of Nevada and Arizona. This ten inch (25cm) tall Penstemon sports, 1/2 inch lavender/pink flowers on a multitude of thin upright stems.
From the Sierra Nevada of California and Nevada we have Penstemon newberryi ssp. newberryi. This is a high elevation Penstemon. I find it growing on loose decomposed granite screes at 4,300-11,500 foot (1300-3500 meters) elevations. On these loose screes, the movement of the loose material will, over time cover the stems were they sprawl, these stems will root easily. The resulting mats can be several feet across. This also makes it a snap, to take rooted cuttings.
I grew up with this Penstemon in my mothers gardens. Pollinated by bumble bees it has one of the largest flowers of the Penstemons. A gem from the Great Plains.
Here are shots of two color forms The pink being the more common. The white is a variant I ran across in a patch of pink ones about forty years ago. The seed from it will produce about 25% white offspring.
It is easy to confuse this Penstemon species with the Penstemon hybrid 'Rubicundus,'. However the hybrid by this name is a large red flower with a white throat, whereas the species P. rubicundus has large pink, some what baggy flowers on 2-3 foot tall stems.
This tall showy perennial is a rare native of the Wassuk Range of western Nevada.
It is believed that this is a naturally occurring hybrid between Penstemon palmeri and Penstemon floridus.
Penstemon season is starting up here...
I think this is Penstemon davidsonii. Can anyone confirm that? (If not... arrghh, more keying out to do!) 
Growing on my rock wall in sandy loam soil. Does anyone know how to ID this? I can provide closeups.
For the third year The American Penstemon Society is offering funding to projects with outcomes that will be practical and useful to members of the American Penstemon Society. Grants focusing on endangered penstemon species are also encouraged.
Grants are for one year and generally range from about $200 to $1,000.
Details about the grant process and application forms are found on the APS website:
http://apsdev.org
* click on Special Projects
I purchased two tiny plants of this penstemon from the Denver Botanic Garden last spring. (Thanks to Mike Kintgen for collecting the seed and Michael Bone for growing it!) I stuck them in the ground in what is essentially western clay and they have grown and flowered beautifully! They are still flowering now on October 3 which is nearly time for our first freeze. If they continue to grow, I will have plenty of seed.
We found this white Penstemon on Mt Kobau in the Southern Okanagan, British Columbia, last June. Can anyone confirm that it is Penstemon fruticosus v scouleri Albus?
I took a few cuttings and have several plants growing-on quite well.
"Snowlover" is starting a modest bloom, started from Alplains seed last year, collected in Colorado... oddly pinched-mouth little flowers.