ADDENDUM. 



Artemisia Rothrockii Gray, Bot. Calif, i. 618 (1876). 



A low shrub, nearest to A. tridentata : herbage canescent with 

 a close pubescence : leaves 1 to 2 cm. long, sometimes narrowly 

 cuneate and obtusely 3-lobed at summit, usually spatulate- lance- 

 olate or linear and entire, obtuse : heads glomerate-paniculate, 12 

 to 14-flowered: involucre larger than in A. tridentata and more 

 globose, about 4 mm. high ; bracts ovate .or oval. 



San Bernardino Mts., at 2100 m. alt., with A. tridentata, Aug. 

 25, 1907, Vernon Bailey: eastern crest of the Sierra Nevadas from 

 Olancha Peak to Mt. Dana. 



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