Dudleya densiflora
Encyclopedia
Dudleya densiflora is a succulent plant
Succulent plant
Succulent plants, also known as succulents or fat plants, are water-retaining plants adapted to arid climates or soil conditions. Succulent plants store water in their leaves, stems, and also in roots...

 known by the common name San Gabriel Mountains liveforever. This is a very rare plant which is endemic to the San Gabriel Mountains
San Gabriel Mountains
The San Gabriel Mountains Range is located in northern Los Angeles County and western San Bernardino County, California, United States. The mountain range lies between the Los Angeles Basin and the Mojave Desert, with Interstate 5 to the west and Interstate 15 to the east...

 of Los Angeles County, California
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

. It is known from only three to five spots in the mountain range and there are an estimated 1,700 individual plants remaining.

This plant grows in the cracks of the granite slopes of three canyons in this single mountain range, where it is threatened by human activity such as rock quarrying
Quarry
A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap, sand, and gravel. They are often collocated with concrete and asphalt plants due to the requirement...

 and off-trails hiking. Local studies are underway to gain information about this species.

Description

Dudleya densiflora is a unique plant, different in appearance from other dudleya
Dudleya
Dudleya is a genus of succulent perennials, consisting of about 45 species in southwest North America.Many plants in the Dudleya genus were formerly classified as Echeveria....

s with its long, snakelike leaves. Each leaf is up to 15 centimeters long and cylindric up to its pointed tip, and it is covered with a soft, grainy powder. From this clump of leaves emerges an erect stem with a branched inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

, each branch bearing 2 to 8 light colored flowers, usually very light pink to white.

External links

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