Last of its Kind

Ginkgo

I love these beautiful trees. They turn yellow in the fall and then eventually blanket the earth around them in the brightest yellow. They are the Ginkgo Tree. What is also fascinating about them is that they are the last living species of a tree type that predates the flowering trees with leaves that we see so often. What? Are those not leaves in the picture? Yes, they are leaves. However, they are not like any other leaves on any other living tree on all of the earth today.

To oversimplify: the first trees on Earth were types of ferns which reproduce from spores, then later came the kinds with needles like pine trees which reproduce from seeds and pollen, and then later came flowering trees that have flat leaves and reproduce with flowers and pollen to make their seeds. The ginkgo used to be one of many similar tree species that are closely related to conifers, those trees with needles. They did not use flowers, just like other needle trees. However, their needles were modified in a way that the needles were essentially unrolled into a flat wavy fan. Yeah, so basically the ginkgo leaves are unrolled tree needles. And, there used to be lots and lots of these types of trees on Earth for millions of years. And then, when the flowering plants came about and started to take over so successfully, only the ginkgo tree of the unrolled needle type trees survived into modern times. To add on to the interesting-ness, the ginkgo is sometimes referred to as a “fossil tree” because it has essentially remained the same for 60 million years; not evolving much during that time. When you look and appreciate the ginkgo, you can contemplate so much. This is a special type of beautiful tree.

Uvas Reservoir

Uvas Reservoir nearly empty

This photo was taken from “inside” the Uvas Reservoir just before last week’s rain. many things are interesting about this and about the time spent standing “in” there, thinking. One neat thing about this was this tree stump. The dam was built in 1957 and this tree has presumably been submerged ever since. Or, at least, most of the time ever since. Maybe it was exposed in other droughts? Certainly it was submerged every time I had happened to ever visit the reservoir here in the Santa Clara County Park. Either way, this tree was once a tree along Uvas Creek before there was a reservoir about it. This tree has been sitting under water for most of 64 years, brushing up against fish and snails and water molecules for decades.

Sunflowers

Sunflower
Sunflower

The sunflower stocks have since dried and are now removed from the garden bed, breaking down in the mulch pile. The seeds have all gone to feed the local squirrel. That was not originally the plan, though it worked out just fine that way. Looking back over these photos from June before the seeds developed.

Pinnacles National Park

Pinnacles National Park

Do you see that large exposed rock? Once upon a time, nearly 23 million years ago, that was a lava flow. A whole lot of hot lava came flowing out of volcanos that happened to be situated on a fault, a crack in the Earth’s crust, where the west side of the fault moved north slowly but surely in fits and starts punctuated by earthquakes in California. Today, this now solid rock is in northern California, less than 90 miles by car south of San Jose. The volcanoes themselves, mountains made of softer rock, have eroded away leaving these giant hardened and ancient lava flows to stand out and be explored and appreciated. What about the rest of the volcano flows that happened to land on the east side of that fault millions of years ago? Well, those hardened flows are in southern California, 195 miles away near Los Angeles.

Yes, that giant rock pictured, and there is a WHOLE lot more not pictured – the lava flow area was huge from several volcanos, has traveled north 195 miles since it formed from cooling lava, along with much of coastal California. I told my children that in a few million years more, it will only take a couple of minutes to drive to Pinnacles National Park from San Jose.