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The ripe seed is on the shrub for approximately six months and ripens in winter which allows plenty of time for dispersal via birds and other animals. During Spring, this species produces pale green leaves with white tomentum, which creates contrast against the old foliage with the dark leaves and red flowers.
Gould's Ecoregions of Texas (1960). [1] These regions approximately correspond to the EPA's level 3 ecoregions. [2] The following is a list of widely known trees and shrubs found in Texas. [3] [4] [5] Taxonomic families for the following trees and shrubs are listed in alphabetical order by family. [6]
Mimosa pigra, commonly known as the giant sensitive tree (pigra = lazy, slow), is a species of plant of the genus Mimosa, in the family Fabaceae. The genus Mimosa (Mimosaceae) contains 400–450 species, most of which are native to South America .
The tree produces spiky green fruits about the size of a golf ball, which turn brown and drop off the tree over an extended period beginning in fall and continuing over the winter.
The capsules explode when ripe, splitting into segments and launching seeds at 70 m/s (250 km/h; 160 mph). [5] One source states that ripe capsules catapult their seeds as far as 100 m (330 ft). [ 9 ] [ verification needed ] Another source states that seeds are thrown as far as 45 m (150 ft) from a tree, with a mode of about 30 m (100 ft). [ 10 ]
The plant is an annual herb that grows to just over 1 m (3 ft 3 in) tall. As a member of the genus Impatiens it is also a touch-me-not, a herbaceous plant that has a ripe seed capsule that will explode. [3] The flowers are considered toxic, and should not be ingested. [4]
Yellow to brown areoles stand on them at a distance of 2 to 4 cm. These carry about 15 to 20 yellowish to brownish spines, which are divided into 7 to 9 radial spines and 6 to 13 central spines. It is not uncommon for the total number of thorns to be reached over the course of many years.
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