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Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions.
In this area where there are variations in soil and topography and the rainforest experiences conditions of all-year-round humidity, the genus Hevea has been undergoing a high degree of speciation. The high humidity encourages the growth of fungal leaf diseases, and the species that are deciduous avoid immediate transfer of fungal spores from ...
The trees are located in the Little Redwood Gulch watershed adjacent to the Silver Peak Wilderness. The area is just north of the Salmon Creek trailhead. [3] [4] In 2008, scientist J. Michael Fay published a map of the old growth redwoods based on his transect of the entire redwood range. [5] The southernmost tree is about 15 feet (4.6 m) from ...
Of California's total plant population, 2,153 species, subspecies, and varieties are endemic and native to California alone, according to the 1993 Jepson Manual study. [4] This botanical diversity stems not only from the size of the state, but also its diverse topographies , climates, and soils (e.g. serpentine outcrops ).
The coast of California north of San Francisco contains the Northern California coastal forests (as defined by the WWF) and the southern section of the Coast Range ecoregion (as defined by the EPA). This ecoregion is dominated by redwood forest , containing the tallest and some of the oldest trees in the world.
H. nitida is a medium-sized, evergreen tree growing to 27 m (90 ft) with a slender trunk and branching crown. [2] The exception to this is the variety toxicodendroides, which is a shrubby form only growing to about 2 m (7 ft) tall. The leaves have three, drooping, elliptical leaflets, that are folded upwards at the midrib; both upper and lower ...
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[4] [5] The redwoods contained in today's regional park are third-growth trees, many of which are over 100 years old. Only one old-growth redwood remains in the area, a 93 feet (28 m) tall tree that seems to grow miraculously out of a rock on a cliff face near Merritt College, which may have survived because it was out of reach for loggers. [2]