How Plants Grow in the Desert

I am no expert in wildflowers, especially not in desert wildflowers, but some things are obvious. Like, even desert plants need water. Take a look at this picture:

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If you can, click to zoom in. How many plants do you see? How many different species? Notice how they’re all growing together in the lee of a small group of rocks.

I did a lot of poking about during my two and a half days in Death Valley, and it took no time at all to figure out that if you want to see wildflowers (beyond the fields of desert gold), you need to go where there’s moisture in the ground. On the shady side of a wash, up a narrow canyon, into gullies and gulches.

I have nothing special to say about this except that I love the tenacity of desert plants.

…oh, the answers: six plants, five different species. In the lower left
Chylismia claviformis ssp. claviformis (brown-eyed evening-primrose), Cryptantha muricata (pointed cryptantha), Phacelia calthifolia (caltha-leaved phacelia), and Aliciella latifolia ssp. latifolia (broad-leaved gilia). In the upper right, Cryptantha muricata and Geraea canescens (desert gold).

 

Two Broads

(right) broad-leaved gilia
Aliciella latifolia ssp. latifolia
(formerly Gilia latifolia)
Polemoniaceae

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(below) broad-flowered gilia
Gilia cana ssp. speciformis
Polemoniaceae

 

 

Thirty three native species of gilias (some no longer in the genus Gilia) grow in the US; all but two of these can only be found west of the Rockies. Broad-flowered gilia is found only in California and Nevada, while broad-leaved gilia can be found in those states plus Utah and Arizona. Both of these plants are annuals, consisting of a basal rosette of leaves and flowers on wispy stems just a few inches above the ground.  Both species are annuals.

 

 

As you can see, broad-leaved gilia really does have broad leaves, and tiny little dark pink flowers. Broad-flowered gilia has much smaller, deeply indented leaves and larger flowers, light purple with blue throats.

 

 

 

 

 

 

 

penny and thumbnail for scale