223 LEAFLETS. 



Granite bluffs of the Pend d'Oreille Kiver, Kootenai Co., 

 Idaho, May, 1906, collected by Mr. and Mrs. John B. Leiberg. 

 More tall and slender than other members of this group, and 

 noteworthy on account of its " chalky-white " rays. 



Erigekoit tephkodbs. Perennial, the tufted stems from a 

 not large tap-root, all rigidly ascending, 6 or 8 inches high, 

 sparingly branching, freely and loosely floriferous, the whole 

 herbage densely cinereous-hirtellous : basal leayes twice as 

 long as the rameal, all narrowly oblanceolate, entire, 

 acutish : heads with hemispherical iuTolucre less than i 

 inch broad in expansion, of verynumerous dull-white narrow rays I 

 inch or more : pappus to unaided eye simple and of few delicate 

 long bristles, a good magnifier disclosing an equal number of 

 very short accessories even more slender. 



Foothills west of Bishop, Inyo Co., Calif., 23 May, 1906, A. 

 A. Heller, n. 8315 as by him distributed. In aspect somewhat 

 intermediate between £. concinnus and divergens. 



A New Oenus of Rutaceae. 



Taravalia. Differing from Ptelea by subumbellate or 

 corymbose few-flowered inflorescence, pentamerous flowers and 

 a thick nut-like wingless fruit; the pericarp neither rugose 

 nor reticulate, but roughened by closely compacted low tubercles, 

 also tardily dehiscent, separating into two concavo-convex valves. 



Genus as far as known endemic on the Mexican Territory of 

 Lower California, and dedicated to the memory of Sigismund 

 Taraval, who in the year 1730 explored much of Lower California 

 and was the first to visit the large outlying island now called 

 Cedros, and to make some report upon its topography and natu- 

 ral history. 



The known species of the genus are three only. 



T. APTBRA. Ptelea aptera. Parry in part. P. aptera, Greene, 

 Contr. TJ. S. Herb., x. 76. Pericarp small, round-ovate, its 

 margin acute. 



Maritime hills at Punta Banda, northern L. Calif. 



