A seed of Cercocarpus montanus, or mountain mahogany, traces an almost perfect
golden ratio spiral. Mountain mahogany is a common bush on the hogbacks and mesas near Denver. In the spring, this is one of the foothills shrubs which look pillow-like from a distance, but are actually quite pokey when you are wading through them.
A super up-close look at the edge of the thallus of the lichen Caloplaca trachyphylla growing on white Dakota Formation sandstone. I first noticed in this photo how grainy the thallus appears up close, but I do not know what the granule-like structures are.
The desert moss Syntrichia ruralis (center) sits amid snow, another unidentified
moss (brown upper left) and an unidentified Cladonia. Cryptogams enjoy any humidity
and temperatures which allow growth, and aren't picky about the season.
An unidentified Parmelia species of lichen (bluish, foreground) gets friendly with
another green, unidentified lichen in the background. I found this particular lichen to
be interesting for its color: many lichens initially simply appear gray, but become much more colorful upon closer inspection.
A lichen community grows on intensely stratified sandstone on a
small hog back near Dear Creek Canyon Park.
A sandstone boulder shot through with quartz crystals also features a prominent
splat of Candellariella rosulans (yellow). The hogbacks west of town are interesting
for their minerals as well; on my hikes I have noted several quartz incursions such as this one, as well as long lines of vertical gypsum crystals poking through the soil.
Beautiful! You may inspire me to get back to my nature blog again.
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