1917.] REPORT OP FIELD TRIPS 59 



acteristic structural features of common plants that were 

 adapted to their normal environment, and to the relation be- 

 tween the same common species and the insects that visited 

 them. 



May 16, 1914,— With Mr. Wallace C. Von Helms as leader, the field 

 party walked through the San Leandro Hills to Lake Chabot. 

 Associations of plants normal on rocky, rather open hillsides 

 and in the creek beds, were observed. On the hills Papaver 

 heterophyllum and some species of Linanthus were found. In 

 the flats Platanus racemosa (Sycamore) and some species of 

 Salix (Willow) received more attention. 



May 30, 1914. — Inclement weather forced the members of the party 

 which had braved its threats to confine their observations chief- 

 ly to the garden of Miss Alice King, in San Francisco, where 

 they were told something of Miss King's efforts and success in 

 growing native plants for seed. 



June 13, 1914. — The trip to Bay Farm Island was under the leader- 

 ship of Mr. John A. Imrie. This locality is remarkable for its 

 interesting halophytes, and observations were made of Salicor- 

 nia ambigua, Suaeda Californica, various Atriplex species, 

 Cuscuta salina (Marsh. Dodder), and other plants of the salt 

 marsh association. 



October 4, 1914. — The trip to Twin Peaks, San Francisco, w T as un- 

 der the leadership of Miss Alice King. 



October 17, 1914. — The walk to Bay Farm Island was made, with 

 Mi?s. D. W. de Veer as leader, for the study of the plants of the 

 salt marsh, the rich flora of which is most highly developed at 

 this time. 



October 31, 1914. — The condition of the native shrubs at the end of 

 the dry season was the special object of the field trip to Straw- 

 berry Canon, University campus, Berkeley. Mrs. Harriet P. 

 Kelley was the leader. 



November 7, 1914. — Mr. L. Seymour Smith led the trip to Angel 

 Island. 



November 14, 1914. — Miss Harriet Walker led the party about the 

 University campus, Berkeley, for observation of plants and 

 shrubs flowering in November. 



December 5, 1914. — The trip to Baker's Beach and Fort Point, led 

 by Mrs. James B. Smith, was devoted to a study of beach plants. 



Feb. 6, 1915. — The field trip to Shepherd Canon was led by Mrs. 

 Harriet Kelley. 



March 6, 1915. — The field trip to Telegraph Canon in the Berkeley 

 Hills was led by Mrs. Adele Lewis Grant. Trillium sessile re- 



