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The diverse geography of Texas, the second-largest state, hosts a variety of habitats for amphibians, including swamps and the Piney Woods in the east, rocky hills and limestone karst in the central Hill Country of the Edwards Plateau, desert in the south and west, mountains in the far west (the Trans-Pecos), and grassland prairie in the north ...
Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
This is a list of official U.S. state, federal district, and territory amphibians. State amphibians are designated by tradition or the respective state legislatures. [1] As of 2023, only 28 states and one territory have a state amphibian.
The stems of Texas rainbow cactus are between 11–24 cm long and 5.5–7 cm wide and usually have 15–18 ribs. The spines usually overlap making the stem not visible. There is a great amount of variation in the spines characteristics. There are typically 4–12 central spines that are .5–1.2 cm long and 14–25 radial spines that are .7–2 ...
Crataegus texana is a perennial tree [4] that grows to be about 25 feet tall [5] and has long, sharp thorns. It has shiny, dark green leaves that can grow to be between 0.75 and 1.5 inches long. Its simple leaves [4] have toothed leaf margins with a parallel veination. [2] Their leaves are ovate in shape, acute at the apex, and cuneate at the ...
Each stem has twelve to nineteen 10 mm (3 ⁄ 8 in) high ribs that bear dark brown to black spines that turn gray as it matures. It takes 150 years to reach maturity. [5] The older plants produce 75 mm (3 in) funnel-shaped white flowers annually which are open at night and close by the morning and have a purple or pink tint to them.
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This is a list of amphibians found in the United States. A total of 306 amphibian species have been recorded in the United States , [ 1 ] 2 of which are now extinct. [ 2 ] This list is derived from the database listing of Amphibian Species of the World .