328 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



PORTULACACEAE 



Calandrinia maritima Nutt. Sea Kisses. 



Annual. Occasional on northern and eastern bluffs. Also on Santa Rosa, 

 Santa Cruz, and Santa Catalina islands; mainland coast to Baja California. 

 Endemic to areas of southern California and Baja California maritime 

 climate. 



Montia perfoliata (Donn.) Howell. Miner's Lettuce. 



Annual. Infrequent on north exposures of canyons. On all the islands; 

 mainland from Mexico to British Columbia and Utah. Indigenous. 

 CARYOPHYLLACEAE 



Spergularia macrotheca (Hornem.) Heynh. Sand Spurrey. 



Perennial herb. Occasional on terraces and the central ridge. On all the 

 islands ; mainland coast. Endemic to areas of California maritime climate. 



Silene gallica L. Windmill Pink. 



Annual. Common and widespread on terraces and bluffs. On all the islands; 

 mainland. Introduced from Europe. 



CRUCIFERAE 



Lepidium nitidum Nutt. Common Peppergrass. 



Annual, Common on the ridge and sea bluff breaks. On all the islands; 

 mainland to desert and to Washington. Indigenous. 



Brassica nigra (L.) Koch. Black Mustard. 



Annual. A single plant by trail on eastern terrace. Also on Santa Cruz, 

 Santa Catalina, and San Clemente islands; mainland. Introduced from 

 Europe. 



CRASSULACEAE 



Tillaea erecta Gaertn. Baby Fuzz. 



Annual. Common on western breaks. On all the islands, including Guadalupe, 

 except Anacapa; mainland to Oregon; Chile. Origin uncertain, but pos- 

 sibly introduced very early from Chile. 



Eche'veria Greenei (Rose) Berger. Greene's Echeveria. 



Succulent perennial. Locally common on southern bluffs. Santa Rosa and 

 Santa Cruz islands also. Taxonomic status uncertain. Insular endemic. 



Echeveria albida (Rose) Greene. White-flowered Echeveria. 



Succulent perennial. Local and rare on western bluff. Also on San Clemente, 

 Santa Catalina, and Prince islands. Taxonomic status uncertain ; if E. 

 Traskae Berger is valid, this yellow-flowered form is limited strictly to 

 Santa Barbara Island. Insular endemic. 



LEGUMINOSAE 



Medicago hispida Gaertn. Bur Clover. 



Annual. Eastern terraces and bluffs. On all the islands; mainland. Introduced 

 from Europe. 



Trifolium tridentatmn Lindl. Three-toothed Clover. 



Annual. Occasional on eastern bluffs. On all the islands except San Nicolas 

 and Anacapa; mainland north to British Columbia. Indigenous. 



Trifolium gracilentum T. & G. var. Palmeri (Wats.) McDer. 



Palmer's Island Clover. 

 Annual. Occasional on eastern breaks and north canyon exposures. Also on 

 Santa Cruz, San Clemente, Santa Catalina, San Nicolas, and Guadalupe 

 islands. Insular endemic. 



Trifolium rnicrodon H. & A. Butterfly Clover. 



Annual. Occasional on the terraces. Also on Santa Cruz, Santa Catalina, 

 and San Nicolas islands; central California to British Columbia; Chile. 

 Origin uncertain. 



Lotus argophyllus (Gray) Greene var. ornithopus (Greene) Ottley. 



Silvery Clover. 

 Suffrutescent perennial. Occasional on southern bluffs and southern canyon 

 exposures, with one plant on western cliff break. The form here is similar 

 to the San Nicolas form {Hosackia venusta Eastw.) which has peduncles 

 .5-1.5 mm. long. The variety ornithopus has many variants on the islands 

 and the taxonomic status of the different forms is, as yet, involved and un- 

 certain. Insular endemic. 



