Mount Diablo is a mountain of the Diablo Range, in Contra Costa County of the eastern San Francisco Bay Area in Northern California. It is south of Clayton and northeast of Danville. It is an isolated upthrust peak of 3,849 feet, visible from most of the San Francisco Bay Area. Mount Diablo appears from many angles to be a double pyramid and has many subsidiary peaks. The largest and closest is North Peak, the other half of the double pyramid, which is nearly as high in elevation at 3,557 feet (1,084 m), and is about one mile northeast of the main summit.
Eriophyllum lanatum, with the common names common woolly sunflower and Oregon sunshine, is a common, widespread, North American plant in the family Asteraceae.
Eriogonum truncatum, the Mount Diablo buckwheat, is a small pink wildflower, believed to have been extinct since 1936 until its rediscovery in 2005. The species is only known to live on Mount Diablo in Contra Costa County, northern California.
Morgan Territory is an historic ranching area on the east side of Mount Diablo in San Francisco East Bay's Contra Costa County. It was named after Anglo-American pioneer Jeremiah Morgan, a migrant from Alabama and Iowa who acquired 2000 acres and developed a ranch here, starting in 1857.
Mary Leolin Bowerman was an American botanist, co-author of The Flowering Plants and Ferns of Mount Diablo, California; Their Distribution and Association into Plant Communities, and the co-founder of Save Mount Diablo. She helped to preserve tens of thousands of acres of Mount Diablo in the San Francisco East Bay before dying at age 97. In 1936 she was the last person to record the Mount Diablo buckwheat Eriogonum truncatum, until it was rediscovered nearly seventy years later on May 10, 2005. In 1978 the manzanita Arctostaphylos bowermaniae was named in her honor.
Morgan Territory Regional Preserve is a regional park in Contra Costa County, California. Located east of Clayton and north of Livermore, California, bordering on Mt. Diablo State Park, it is part of the East Bay Regional Park District (EBRPD). The preserve was founded in 1975 with fewer than 1,000 acres (400 ha), but EBRPD has gradually acquired more property, and, since 2015, the preserve encompasses 5,230 acres (2,120 ha). The main access roads run from Livermore and Clayton.
Coreopsis hamiltonii, the Mt. Hamilton coreopsis, is a rare California species of Coreopsis in the family Asteraceae. It is found only in a small region including Mount Hamilton and the Diablo Range in the southwestern San Francisco Bay Area.
Helianthella californica is a species of flowering plant in the family Asteraceae known by the common name California helianthella. This wildflower is native to the mountains of California, northwestern Nevada, and southwestern Oregon.
Antennaria rosea is a North American species of flowering plant in the family Asteraceae known by the common name rosy pussytoes. Other common names include cat's foot and mountain everlasting. It is widespread across much of Canada including all three Arctic territories, as well as Greenland, the western and north-central United States, and the Mexican state of Baja California.
Blepharizonia plumosa is a California species of tarweed known by the common name big tarweed. It is endemic to central California, where it grows in the Central Coast Ranges and adjacent sections of the southern San Francisco Bay Area and Central Valley, from southern Sonoma County south as far as San Luis Obispo County.
Calochortus pulchellus is a rare species of flowering plant in the lily family known by the common name Mt. Diablo fairy-lantern or Mount Diablo globelily.
Chaenactis glabriuscula, with the common name yellow pincushion, is a species of flowering plant in the daisy family. It is native to California and Baja California.
Cirsium crassicaule is a species of thistle known by the common name slough thistle. It is endemic to the San Joaquin Valley of California, where it is known primarily from freshwater wetlands. It has been found in only a few locations in Kern, Kings, and San Joaquin Counties.
Cirsium hydrophilum is a species of thistle which is endemic to California, where it is found only in the San Francisco Bay Area and the Sacramento-San Joaquin River Delta. This native thistle grows in wet boggy habitats.
Cordylanthus nidularius is a rare species of flowering plant in the family Orobanchaceae known by the common name Mt. Diablo bird's beak.
Crepis modocensis is a species of flowering plant in the daisy family known by the common name Modoc hawksbeard.
Enceliopsis covillei, known by the common name Panamint daisy, is a rare North American desert species of flowering plant in the family Asteraceae.
Deinandra fasciculata, known by the common names clustered tarweed and fascicled spikeweed, is a species of flowering plant in the family Asteraceae native to western North America.
Antennaria lanata is a North American species of flowering plant in the family Asteraceae known by the common name woolly pussytoes. It is native to western Canada and the northwestern United States.
Deinandra lobbii, the threeray tarweed, is a North American species of plants in the tribe Madieae within the family Asteraceae.
