134 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. 



Querciis claciwides, Lesq. ; Table Mountain, Tuolumne County; 

 Pliocene. 



Qucrcus furcijiervis, Rossmassler ; Plumas County, California; 

 Bridge Creek and Cascade Mountains, Oregon, under a 

 volcanic overflow (Professor Joseph Le Conte). Miocene 

 and Eocene. 



Qucrcus goeppcrti, Lesq.; Chalk Bluffs, Xevada County; Plio- 

 cene. 



Quercus vwrii, Lesq.: Lassen County; Miocene. 



Quercus nevadensis, Lesq. ; Chalk Bluffs, Nevada County ; Plio- 

 cene. 



Quercus oiafseiii. Heer ; Table ^fountain, Tuolumne County; Las- 

 sen County ; Pliocene and I\Iiocene. Also found in Da- 

 kota ; Ctah ; Greenland. 



Quercus pseudo-clirysophylla, Lesq.; Forest City, Sierra County; 

 Pliocene ; perhaps the living Quercus densiflora. 



Quercus pseudo-lyrata, Lesq. ; Nevada County ; Pliocene. 



Quercus steenstrupiana, Heer; Forest City, Sierra County; Plio- 

 cene and miocene. Also found in the Arctic regions ; 

 Greenland. 



Quercus transgressa, Lesq.; Sierra County; Pliocene, perhaps 

 the living O. chrysolepis. 



Quercus voyana, Lesq.; Chalk Bluffs, Nevada County; Pliocene. 



Castanca (Chestnut). 

 Castanea ungeri, Heer: Rock Corral, Placer County; Corral Hol- 

 low, San Joaquin County ; jMiocene. Also in British Co- 

 lumbia ; Alaska ; Greenland : Europe." 

 Cas'anopsis (Chinquapin). 

 Cosfanopsis chrysophylloidcs, Lesq. ; Chalk Bluffs, Nevada 

 County ; Pliocene. 



SAI^ICINEAE. 



Sali.v (Willow). 

 Salix calif ornica, Lesq.; Table ^Mountain, Tuolumne County; 



Pliocene. 

 Salix eUiptica, Lesq. ; Chalk BlulTs, Nevada County ; Pliocene. 

 Salix Integra, Goeppert ; Corral Hollow, San Joaquin County ; 



]\Iiocene. 

 Salix varians, Goeppert: Table [Mountain. Tuolumne County; 



Corral Hollow, San Joaquin County: Tertiary.- Also 



Alaska ; Greenland and Europe. 

 Populus balsauwides, Goeppert ; Corral Hollow. San Joaquin 

 Populus zaddachi, Heer ; Nevada County ; Tertiary. In the in- 



Populus (Poplar). 



Populus halsamoides, Goeppert; Corral Hollow, San Joaquin 

 County ; Pliocene. 



