VOL. II.] Plants of San Francisco. 345 



but also roots at the joints of the spreadhig slender stems and thus 

 forms mats. It may be the same as the Arizonian 0. Wrightii, 

 but appears too near specimens .of O. corunta from the West 

 Indies. 



RHAMNEyE. 



76. Rhamnus Californica Esch. in Mem. Acad. Petr. x, 281. 

 Common. Flowering and fruiting nearly all the year in sheltered 

 localities. " Coffee Bush," " Cascara sagrada." 



77. Ceanothus thyrsiflorus Esch. in Mem. Acad. Petr. x, 



2S5. Formerly abundant on the Presidio Hills, but now not fre- 

 quent. On the hill at Point Lobos, above the signal station, it 

 forms perfectly flat mats many feet in diameter. January— June." 

 " California Lilac." 



sapindace^. 



78. Acer Negundo L. var. Californicum* (Nutt. T. & G. Fl. 

 i, 250) "Box Elder." 



79. ^scuLUS Califorxica Nutt. T. & G. Fl. i, 251. Bluffs 



of the bay shore near South San Francisco. May. " Buckeye." 



anacardiace^ . 



^ 



80. Rhus Toxicodendron L. spec. 381 ; var. diversiloba (T. 



& G. Fl. i, 218). Common in Golden Gate Park and all bushy hills 

 about the city. April. " Poison Oak," " Poison Ivy." 



) > 



leguminos^. 



" 81. LuPiNUS arboreus Sims. Bot. Mag. t. 6S2. Common in 

 the sands of the western part of the city. March— June. "Tall Yel- 

 low Lupine." 



82. LuFiNUS Chamissonis Esch. Mem. Acad. Petr. x, 28S. 

 Usually growing nearer the sea than the last. March— June. 

 "Shrubby Blue Lupine." 



83 LUPINUS POLYPHYLLUS Lindl. Bot. Reg. xiii, t. 1096. 

 Southwestern border of Lake Merced. .Alay-July. ' 'Swamp Lu- 



pine 



84. LUPINUS DoUGLASii Agardh. Syn, 34. Near Lake Merced 



April— J 



Zoe, ii, 4. 



