| Topic |
Facts |
| Size |
467 acres |
| Location |
Intersection of Highway 280 and Edgewood Road in Redwood City |
| Elevation |
240’ to 873’ above mean sea level |
| Geology |
Significant concentrations (160 acres) of serpentinite (California’s state rock) plus sandstone, shale, chert, greenstone, and other minerals |
| Plants |
- 90 plant families represented
- 9 plant communities (non-native grassland, serpentine bunchgrass grassland, chaparral, mixed serpentine chaparral, chamise chaparral, mixed Northern California coastal scrub, oak foothill woodland, mixed hardwood subgroup of the mixed evergreen forest community, and wetlands)
- Over 500 plant species (unusually high diversity)
|
| Animals |
- Mammals (21 species, including black-tailed deer, coyote, gray fox, bobcat, jackrabbit, brush rabbit, pocket gopher, and SF dusky-footed woodrat)
- Birds (more than 100 species, including red-shouldered hawk, CA quail, Western bluebird, Anna’s hummingbird, owls, woodpeckers, wrentit, flycatchers, and CA thrasher)
- Amphibians & Reptiles (13 species, including Pacific tree frog, Southern alligator lizard, Western fence lizard, CA slender salamander, gopher snake, Pacific rattlesnake, kingsnake, and Western skink)
- Invertebrates (including bees, ants, wasps, butterflies, moths, beetles, spiders, and other arachnids)
|
| Federal and State Protected Species |
- Bay checkerspot butterfly (Euphydryas editha bayensis) (threatened)
- San Mateo thornmint (Acanthomintha duttonii) (endangered)
- Marin western flax (Hesperolinon congestum) (threatened)
- White-rayed pentachaeta (Pentachaeta bellidiflora) (endangered)
|
| Other Species of Concern |
- Franciscan onion (Allium peninsulare var. franciscanum)
- Kings Mountain manzanita (Arctostaphylos regismontana)
- San Francisco collinsia (Collinsia multicolor)
- Western leatherwood (Dirca occidentalis)
- Fragrant fritillary (Fritillaria liliacea)
- Woolly-headed lessingia (Lessingia hololeuca)
- Serpentine linanthus (Leptosiphon ambiguus)
- Chaparral or Arcuate bush mallow (Malacothamnus arcuatus)
- Woodland monolopia (Monolopia gracilens)
- San Francisco dusky-footed woodrat (Neotoma fuscipes annectens)
- Blind harvestman (Calicina minor)
- Edgewood microblind harvestman (Microcina edgewoodensis)
|
| Other Distinctions |
- Only natural preserve in San Mateo County (Fitzgerald is a marine reserve)
- Spectacular springtime wildflower displays
- Excellent representation of California’s native plant species, especially those adapted to serpentine.
|
| Current Status |
- Natural Preserve (since 1993)
- Primary management objective is to protect, preserve, and restore Edgewood’s natural resources
|
| Activities |
- Hiking, horse riding, nature study and appreciation
- Picnicking at Old Stage Day Camp
|
