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A Few Examples of Plants and Lichens on Red Rock Hill, San Francisco

Updated: Feb 8, 2021

Through our new virtual programming series, Nature in your Neighborhood, we challenged volunteers to go out into their neighborhoods or backyards to see what plants sparked their interest. Whether plants are native or non native, we can all appreciate a connection to nature and the curiosity that it can spark!

By: Emil Fogarino

Fremontia or flannel bush

General Biology: Fremontodendron californicum or Fremontia…..California Flannel bush; 3 species in North America along with hybrids; the plant body lacks petals and instead has 5 bright yellow webbed bracts (sometimes called terrestrial starfish); flowers mainly May to June; Is a Native to California; has fuzzy hairs on leaves that can be irritating to skin and eyes; can grow up to 20 feet tall.

Ecology: Likes full sun and well drained soil; drought tolerant; it can grow anywhere between sea level and 6000 feet in habitats such as chaparral, oak woodland and pine forest. Pollinators include bees.

Human uses:  Native Americans used bark to make string, rope and baby cradles

Interesting fact: Named after explorer John C. Fremont ( also credited for naming the Golden Gate in the 1840’s )

Two types of lichens; foliose and crustose

Foliose Lichen
Crustose Lichen