222 LEAFLETS. 
Granite bluffs of the Pend d’Oreille River, 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. 
ERIGERON TEPHRODES. 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 leaves twice as 
long as the rameal, all narrowly oblanceolate, - entire, 
acutish: heads with hemispherical involucre less than 3 
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 Æ. concinnus and divergens. 
A New Genus of Rutaceae. 
TARAvVALIA. 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. APTERA, Ptelea aptera, Parry in part. P. aptera, Greene, 
Contr. U. S. Herb., x. 76. Pericarp small, round-ovate, its 
margin acute. 
Maritime hills at Punta Banda, northern L. Calif. 
