Diario del proyecto Wild Roses of the San Francisco Bay Area

Note: this is a work in progress...

Also see the following comparison charts by Barbara Ertter:

• Comparative Table of Thicket-Forming Roses in California: https://ucjeps.berkeley.edu/ina/roses/table_thicket.html
• Comparative Table of Wood and Ground Roses in California: https://ucjeps.berkeley.edu/ina/roses/table_groundrose.html

Flowers

Fruit

Stems and Prickles

Leaves

How to photograph wild roses so that the species can be identified:

• It’s important to get a picture of the entire plant. Is it erect or decumbent? Bushy, sprawling, climbing?
• Take a close-up photo of the stem. Are the prickles thin and straight or stout and curved? Many or few? Are the prickles hooked at the tip or not?
• Take a close-up side view of the fruit, including the pedicel. Is the fruit smooth or prickly? Glandular or not? Is the pedicel smooth or prickly? Are the sepals attached or have they fallen off? How many fruits are attached to the stem?
• Take a close-up photo of a flower. What color is it? How many petals does it have? Also take a picture of the underside of the flower.
• Make a note of the habitat: is it growing near a stream, in a forest, or in chaparral (esp. after a fire).