Unknown bright yellow blossom on semi-arid bush at Silent Valley Resort in the San Jacinto Mountains of Southern California. This bloom has 4 large, fragile petals in a cup shape. This appears to have no sepals. The leaves are narrow and extremely tough and leathery. Stems of bush are smooth. Much of the bush is dead. A bud is evident below as are the leathery blue-gray leaves. March 8, 2012.