Category: Seed of the Week (Page 97 of 167)

Seed of the Week: Brittlebush

Our mystery seeds from last week were from brittlebush, Encelia farinosa.

Brittlebush is a common plant, native to the southwestern United States.

It has silvery green leaves and is covered with bright yellow flowers in the spring. It can reach five feet tall and forms a rounded mound. It is a perennial.

The “flowers” are actually daisy-like composites.

The intense yellow flowers produce clusters of seeds.

The brittlebush seeds in the photographs last week were not quite mature. Notice the mature seeds above are darker and filled out more. They still have the intriguing fringe, though.

Brittlebush grow readily from seeds.

Brittlebush flowers are visited by many insects, for example see these previous posts:  the elegant blister beetle on a brittlebush flower and another bee on brittlebush leaf.

In the past humans have used brittlebush resins as a form of chewing gum and for burning as incense.

Isn’t it a beautiful and interesting plant?

Have you ever seen brittlebush in bloom?

Mystery Seed of the Week 111

One of the joys of doing Seed of the Week is popping open the seed head or pod of a plant you’ve seen a million times and discover a fascinating seed that you never even knew existed.

That’s what happened today.

These seeds are from a common plant found in the Sonoran Desert.

Note:  these seeds may not be fully ripe, so they may be a bit darker in the mature form.

Any idea what plant these might be from? Extra credit for a whimsical description of what you think the seeds resemble. I think they look like they have a punk haircut. 🙂

Edit:  The answer and a better photograph of the seeds are now posted.

Seed of the Week: Blue Palo Verde

Our mystery seeds from last week were from a blue palo verde, Parkinsonia florida (previously Cercidium floridum).

The blue palo verde is unique to the Southwest and is the Arizona State Tree.

Palo verdes are small trees named for their green trunk and branches.

Why green? The top layer of the trunk and branches contains chlorophyll, which allow the tree to continue to make food via photosynthesis even if it doesn’t have leaves.

A close up of the trunk…

Blue palo verdes do have leaves at certain times of the year, but they tend to be small and fall off when the plant is under water stress.

Often the trees are covered with brilliant yellow blossoms in the spring…

…which produce these seed pods full of seeds.

In addition to the blue palo verde, several other species of palo verdes grow in Arizona, including the foothills palo verde, Parkinsonia microphylla and the Mexican palo verde, Parkinsonia aculeata.

The flowers of the Mexican palo verde are unusual because the top petal changes color with age, until it is a deep reddish orange.

Firefly Forest has more photographs and facts about Mexican palo verdes, blue palo verdes, and foothills palo verde.

Desert Harvesters has information about how to identify blue and foothills palo verde trees, plus tips for harvesting the pods

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