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The species are shrubs to large trees ranging in size from 20 to 30 m (66 to 98 ft) tall. The leaves are bipinnate in most species, pinnate or simple in a few species. The flowers are produced in conspicuous large panicles, each flower with a five-lobed blue to purple-blue corolla; a few species have white flowers.
An 1865 report mentioned that Sydneysiders were visitng the Botanic Garden to see the tree's "luxuriant blossom". The same tree is now over 175 years old, and protected by ropes to prevent it falling apart. [10] Jacarandas were first introduced to Brisbane in 1864, and there are guides tours of the best locations to view the flowers. [11]
California Native Plants for the Garden, Carol Bornstein, David Fross, and Bart O'Brien, Cachuma Press; California Native Trees and Shrubs, Lee W. Lenz, Rancho Santa Ana; Ceanothus, David Fross and Dieter Wilken, Timber Press; Complete Guide to Native Perennials of California, Glenn Keator, Chronicle Books
Chilopsis linearis is cultivated for its large, showy flowers, and tolerance of hot, dry climates. Although the natural growth is a very irregular shape, it can be readily pruned into a conventional tree shape. A number of cultivars have been selected. Some, such as 'Rio Salado', have dark purple or magenta flowers.
Ceanothus is a genus of about 50–60 species of nitrogen-fixing shrubs and small trees in the buckthorn family (). [3] [4] [2] [5] Common names for members of this genus are buckbrush, California lilac, soap bush, or just ceanothus.
Eriodictyon parryi or poodle-dog bush is a tall California mountain shrub with showy purple flowers, which is notable for secreting a severe skin irritant. It is an opportunistic species that grows mostly in areas that have been disturbed by fire.
Valley elderberry longhorn beetles in California are very often found around red or blue elderberry bushes. Females lay their eggs on the bark. [9] Strong-scented flowers in wild populations of European elder (S. nigra) attract numerous, minute flower thrips which may contribute to the transfer of pollen between inflorescences. [10]
The perennial plant, growing from a bulb, is native to California and Oregon. [2] Brodiaea californica is the largest species in the genus Brodiaea, reaching up to 30 in (76 cm) in height when in flower. The flowers, which are borne in late spring or early summer, are variable in colour, ranging from purple to white or occasionally pink. [6]