2 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.. 72 



Naiadales. 



Naiadaceae. 



Potamogeton hnowltoni Berry. 

 Dicotyledonae. 

 Choripetalae. 

 Salicales. 



Salicaceae. 



8allx inquirenda Knowlton. 

 Salix hnowltoni Berry. 

 Salix sp., Knowlton. 

 Salix (?) sp., Knowlton. 

 Populus lacustris (Knowlton) Berry. 

 Fagales. 



Fagaceae. 



Quercus simulata truncata Berry. 

 Quercus turneri Knowlton, 

 Quercus argentum Knowlton. 

 Kanales. 



Ceratophyllaceae. 



Ceratophyllum fossilium Berry. 

 Nymphaeaceae. 



Castalia (?) sp., Berry. 

 Rosales. 



Kosaceae. 



Chri/soltalamis pollardiana Knowlton. 

 Caesalpinlaceae. 



Cercis (?) nevadensis Knowlton. 

 Sapindales. 



Anacardiaceae. 



Rhus ( f ) nevadensis Knowlton. 

 Sapindaceae. 



Sapindus lancifoUus Lesquereux. 

 Myrtales. 



Hydrocaryaceae. 



Trapa americana Knowlton, 

 Gamopetalae. 

 Ericales. 



Vacciniaceae. 



Vaccinium ellipticum Berry. 

 Vaccinium vaccinifoUa (Knowlton) Berry. 

 Rubiales (?), 



Eubiaceae (?), 



Cinchonidium (?) turneri Knowlton. 



CHARACTER OF THE ESMERALDA FLORA 



As &hown in the foregoing list, this flora contains but 22 species. 

 These represent 16 genera in 15 families and 12 orders. Two are 

 Pteridophytes and the balance Spermatophytes. The seed plants 

 represent 2 monocotyledons and 18 dicotyledons, there being no 

 traces of conifers. Fifteen of the dicotyledons belong to the choripe- 

 talous division. 



