The South Riding RV Travels

204

December 13th - Tucson AZ - Sonora Desert Museum - Part 1 Museums

The Sonora Desert covers a significant part of southern Arizona and also extends into Mexico. The museum's 100 acres  (www.desertmuseum.org) are a typical piece of Sonora desert landscape inhabited only by typical desert flora and fauna. The only way to tell you are in a museum is that many of the plants are labelled. It is therefore a good way for us to find out the names of many of the plants we had been driving past.
.Bear grass is quite an attractive plant with the whispy white bits curling away from the stems. I'm sure the ancient tribes must have found some uses for it, it is so common.
This one looks like a fern, but is in fact a member of a palm family and is called palm of the Virgin.
A typical agave, which has many uses - some parts are edible, the leaves contain long fibres used for weaving and making cord, and it is used to make tequila and mescal.

This photo shows a new leaf in the centre, still sealed into a cylinder but showing the marks where it will split open.

Bats are quite common in desert areas, feeding on the insects at night and roosting during the heat of the day, though most seem to migrate further south for the winter. Here 2 bat boxes have been partly hidden among the organ pipe cactus, which are about 15ft tall.
.Another agave, called the century plant because it only flowers once, when mature, before it dies (although this can happen anywhere between about 7 to 55 years). Once the flower spike appears, it grows rapidly - the measuring pole in front shows that it had grown 10 inches in the 2 days before we saw it.
A third agave, this one is called Queen Victoria's agave. I liked it because it forms such a perfect globe - a very architectural plant.
.Back to cactus. These are baby Baja fire barrel cacti, no doubt they will be planted out in the grounds when they are bigger. They look beautiful with the red fish hook spines, but are as vicious as any other cactus.
This is the dead flower spike of a century plant, but the interest here is the series of holes drilled by carpenter bees who create cell-like structures inside the stem.
Even in December there are plants still blooming in the desert, so there is still food for various insects, including this butterfly...
...and this beetle. Red usually means the insect is toxic, so we didn't get too close, but the downside is that it makes it stand out, especially against these unusual flowers.
This small green scorpion (about 2 inches long)would be very hard to spot out in the wild, and is also poisonous, so it is displayed in a glass case.
Part of the museum is given over to the geology of the area. This is part of a display of minerals and gem stones all of which were found in Arizona or just across the border in Mexico, which is geologically the same formation.
.This is a larger sample, I think of azurite. The display lighting certainly made it gleam.
They have a microscope set up with several samples of stones. This one may be turquoise, which is quite commonly found in the area. It was, and still is, highly prized by the native tribes for decorative purposes.
There are many limestone formations in the Sonoran desert, and thus some wonderful decorated cave systems. The museum doesn't have any on its land so it has created a fairly realistic decorated cave of its own, complete with stalagmites, stalactites and draperies.
A desert museum wouldn't be complete without some of the local snakes. There are 2 snakes curled up here together, and the rattle can be clearly seen at the end of the top ridge-nosed rattlesnake's tail.
I would have missed this one in the wild. It is called the brown vine snake, and with its very narrow head and long thin body it looks very like the twigs over which it is draped.
The Isla San Estaben chuckwalla is a type of iguana. What a name to conjure with! He looked quite majestic reclining on his rock...
 
... whereas the Mexican bearded lizard was just hanging out, unfortunately not with any friends that we could see.
There are creeks and small oases in the desert, usually in the foothills where there is some shade and the runoff from the little rain there is or the snowmelt, so there are some amphibians too, like this bullfrog...
... this small brown frog whose name I can't remember...
... and these Arizona toads.
There are even fish. This one is called a flannelmouth sucker, and it lives in the pond with the beaver.