A somewhat withered looking Figwort, Scrophulariaceae - Penstemon eatonii.
Las Vegas can be seen on the left side of this panoramic photograph. The summit took me about 30 min to reach, but, round-trip, the trail is labeled at 2.5 hr.
I was able to see a captive desert tortoise, but these road signs indicating tortoise crossings were just a tease.
Mexican Rush. I’m not positive on this identification, but it was certainly interesting to see given that it’s a wetland plant in the Mojave Desert. There are a few ‘tanks’ or temporary ponds that form along the landscape during the wet season, and they support wetland fauna and flora. While I’m not intimately familiar with it, there is work on the ecology of aquatic taxa in intermittently flooded systems like these.