Parkinsonia microphylla

Parkinsonia microphylla is a bristling, upright-branching tree. The species is slow-growing, sometimes living for several hundred years. It typically grows to heights of around 5 metres (16 ft), although rarely it can reach 6–7 metres (20–23 ft) tall.
The leaves are yellowish green, and during extensively dry and hot periods the tree will shed them.  It has the characteristic of performing photosynthesis in its bark (hence the green color), and this is what allows it to survive leafless in hotter periods.
The flowers are found on the end of a branch, small, pale yellow and occur in late spring. The tree may not flower every year, depending on the amount rainfall. If there is enough rainfall, seeds will also appear in 4–8 cm long, soft pods which dip in between each seed. They ripen in July, and stick to the branches.
The seedlings are very sensitive to drought for the first two to three months of their lives, and only about 1.6% will survive after germinating.

ThreatsBuffelgrass is an exotic species of grass native to Africa, first introduced into the Sonoran Desert for livestock grazing, which spreads very quickly and can often kill seedlings by using available water, which could be a threat in the future.

Parkinsonia Microphylla

Parkinsonia microphylla

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