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Ceanothus perplexans is an evergreen shrub that typically grows 1 to 3 meters tall with spreading, intricately branched stems. Its leaves are a defining characteristic: small, thick, leathery, and oppositely arranged, with distinct cupped leaves that give the plant its common name. In spring, it produces clusters of white or pale blue flowers. [2]
The flowers are about 2 mm across [4] and white, borne in thick clusters emanating from the leaf axils, [2] particularly on the older stems. [4] They all open at once, so the plant is covered with bloom. This usually happens in June or July, but may be any time from April to October according to the altitude and weather.
Ceanothus americanus is a shrub that lives up to fifteen years and growing between 18 and 42 in (0.5 and 1 m) high, having many thin branches.Its root system is thick with fibrous root hairs close to the surface, but with stout, burlish, woody roots that reach deep into the earth—root systems may grow very large in the wild, to compensate after repeated exposures to wildfires.
Ceanothus integerrimus var. californicus. [9] Leaves elliptic, lanceolate or oblong to ovate in shape and are three ribbed, from the leaf base. Leaf surfaces have small hairs and the undersides are less hairy than the surface. Flowers generally white or blue. Ceanothus integerrimus var. integerrimus. Ceanothus integerrimus var. macrothyrsus. [10]
Ceanothus cuneatus is a spreading bush, rounded to sprawling, reaching up to 3 meters (9.8 ft) in height. The evergreen leaves are stiff and somewhat tough and may be slightly toothed along the edges. The bush flowers abundantly in short, thick-stalked racemes bearing rounded bunches of tiny flowers, each about half a centimeter wide.
Ceanothus pauciflorus, known by the common name Mojave ceanothus, is a species of flowering shrub in the buckthorn family, Rhamnaceae. It is native to the Southwestern United States ( Arizona , California , New Mexico , Texas , and Utah ) and Mexico , where it grows primarily in shrubland communities at moderate to high elevations.
The Ceanothus foliosus shrub may be tall and erect but is generally under two meters in height; it may also be low-lying and sprawling. It has sparse small evergreen leaves only one to two centimeters in length and toothed along the edges with glandular knobs.
Ceanothus thyrsiflorus can grow more than 6 metres (20 feet) tall and broad in its native chaparral habitat, with glossy green leaves. The clusters of tiny flowers, borne in spring, vary from different shades of blue to close to white. [2] The evergreen leaves are shiny and about 4 centimetres (1 + 1 ⁄ 2 inches) long. [3]