This wiki page shows pictures of geophytes growing in the wild in northern California along the Sonoma Mendocino coast arranged alphabetically from A through Calypso. Rainfall in this location starts in the fall with the most rain coming in December and January with less rain continuing sometimes as late as May. Summers are dry although there are periods of fog in summer which brings some moisture. Temperatures are moderate year round. Habitats are mixed evergreen and Redwood forests, bluff scrub, riparian and some limited grasslands, but much of this latter habitat (grasslands) is now gone. Most flowers bloom late spring into summer.
Allium dichlamydeum (coast onion) grows near the coast in Northern and central California. These pictures by Bob Rutemoeller show it in bud on a coastal bluff in Sonoma County, in bloom in the same spot a few weeks later, a close-up, growing in a wild rock garden where it would be difficult for predators to get it, and finally almost two months after the first pictures in mid July 2003 it is still in bloom, now with Dudleya farinosa blooming at the same time. A final picture taken another year where both were growing in the rocks at Salt Point State Park.
Allium triquetrum is not native, is from Europe but has naturalized in our area as it has in New Zealand and Australia. Photo by Mary Sue Ittner taken at Manchester State Beach near an abandoned house.
Allium unifolium is found in grasslands moist in spring. These pictures taken by Bob Rutemoeller show it in habitat on the Sonoma coast and a close-up too.
Amaryllis belladonna known to many as "Naked Ladies," is native to the Cape Floral province of South Africa. It has a great variation in time of bloom, starting in summer and extending into fall. It has naturalized in many Mediterranean climates throughout the world including our coast. The picture below from Bob Rutemoeller shows some in bloom September 2004.
Asarum caudatum or wild ginger is a rhizomatous perennial found in shady moist areas. It has evergreen cordate leaves with red-brown flowers that are hidden under the leaves. Photos by Mary Sue Ittner
Brodiaea terrestris ssp. terrestris (Earth Brodiaea) shown it in habitat at Salt Point State Park and along the Sonoma coast. Photos by Mary Sue Ittner and Bob Rutemoeller
Calochortus amabilis found on open hillsides and in woodlands in the Coast Ranges of California has yellow globe flowers and is knows as Diogenes' lantern. The first twos photos by Bob Rutemoeller were taken on a hillside in Sonoma County. One was one high up, too difficult to get close to in order to photograph. The third photo was taken by Mary Sue Ittner.
Calochortus tolmiei (Pussy Ears) in habitat, growing on the rocky bluff right next to the ocean in Sonoma County, California. Photos by Bob Rutemoeller
Calochortus uniflorus (pink star tulip) with unusual markings grown from seed of a local Mendocino California population where it grows in a grassy area near the ocean. The other two pictures show plants growing in habitat in Sonoma County. Photographs by Bob Rutemoeller. 
Calypso bulbosa is found in moist woods and is one of the early spring wildflowers that people delight in seeing each year. The first two photos by Mary Sue Ittner taken at Stillwater Cove Regional Park in Sonoma County, California, March 2005 and in Mendocino county early May 2006. The last photo by Bob Rutemoeller is a close-up.
Mendocino Sonoma Coast Index - Camassia to Dichelostemma - Epipactis to Maianthemum - Marah to Sisyrinchium - Toxicoscordion to Zigadenus