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'''''Grindelia camporum''''' is a species of flowering plant in the [[Asteraceae|daisy family]] known by the common names '''Great Valley gumplant''' and '''Great Valley gumweed'''. It is native to [[California]] and [[Baja California]], where it can be found in a number of habitats. Its range may extend into [[Nevada]]. This hardy plant readily grows in disturbed and altered areas such as ditches and roadsides. It is a gangly weedlike perennial topping two meters in maximum height. Its erect, branching stems are lined with many stiff, wavy-edged, serrated leaves 2 to 3 centimeters long. Atop the stem branches are [[inflorescence]]s of a single large [[Head (botany)|flower head]] up to 3 centimeters wide. The head is a vaguely thistlelike cup of green clawlike [[bract|phyllaries]] that bend downward. The center of the head is filled with yellow disc florets and there are usually many yellow ray florets around the circumference. The flower head fills with a copious white exudate, especially during the early stages of blooming. This plant has a number of historical medicinal uses. {{Inc| Grindelia camporum (Grindelia robusta, Nutt). Gum-plant. Herbaceous: lvs. larger and more rigid, broadly cordate-oblong, obtuse: achenes all, or some outer ones, 1-toothed or bordered at the summit.—Flowers throughout the Californian winter. Collected stock is offered. {{SCH}} }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Varieties== ==Gallery== <gallery perrow=5> Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== <references/> <!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 --> <!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 --> <!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 --> ==External links== *{{wplink}} {{stub}} __NOTOC__
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