Article on the Discovery of Volutaria in Borrego Springs
Larry Hendrickson, Botanist, Anza-Borrego Desert State Park® has written an article about the discovery of Volutaria sp. in Borrego Springs. This aggressive weed was discovered growing along Borrego Springs Road in the spring of 2011. The discovery of this invasive, Volutaria canariensis, is native to the Canary Islands.  This short piece of botany history was published in the Botany Newsletter in October 2011.

Gardening with Native Desert Plants: A How-to Booklet
This booklet is for people who live in Borrego Springs and neighboring desert communities such as Ocotillo Wells,  Shelter  Valley,  Ranchita,  Canebrake,  or  Salton  City.  These communities are part of a larger area known as the Lower Colorado Desert that stretches as far as Palm Springs to the north, Yuma to the east, and even Mexicali, Baja California, Mexico, to the south. The Lower Colorado is, in turn, part of the vast Sonoran Desert that encompasses most of  Arizona and  a  large  part  of  northern  Mexico.  This booklet contains  gardening  principles using plants native to the Sonoran Desert.

Illustrated Glossary to the Compositae (Asteraceae)
The Compositae (Asteraceae), the largest and most successful flowering plant family with some 1700 genera and 24,000 species, can be complex as can be the botanical terms which describe the details of the sunflower family. This illustrated glossary contains black and white line drawings that illustrate the terms and descriptions.

Anza-Borrego Desert State Park
Anza-Borrego Desert State Park is the largest state park in California. Five hundred miles of dirt roads, 12 wilderness areas and many miles of hiking trails provide visitors with an unparalleled opportunity to experience the wonders of the California Desert. 

Anza Borrego Foundation
Anza-Borrego Foundation (ABF) is the nonprofit cooperating association for Anza-Borrego Desert State Park. The Foundation acquires land for conservation in and around the Park, educates the public on its resources, and supports research relevant to our region.

Monsoonal Desert Plants
There are a number of plants species which are germinated by warm summer rainfall from thunderstorms in July, August and September, and which would not germinate from winter rains. This link to Tom Chester's excellent Web site gives a list of plants that respond significantly to monsoonal rainfall. Linked with permission.

San Diego County Plant Atlas
The Plant Atlas project is an intensive plant specimen collecting effort begun in 2003 employing dozens of volunteer plant enthusiasts and resulting in a very high density survey of the more than 2800 species found in the county. 

San Diego County Native Plants by James Lightner
The 3rd Edition of San Diego County Native Plants by James Lightner includes the flora of Anza-Borrego Desert State Park. Available from The Anza Borrego Foundation.