24 LEAFI^ETS. 



CiCUTA GRANDIFOLIA. Rootstock an inch thick when dry, 

 short-jointed, horizontal, producing from beneath many and 

 closely approximate thick fleshy roots, these terete, straight, 

 several inches long : basal leaves a yard long or more, bright 

 green, glabrous; leaflets oblong-lanceolate, acute, subsessile, 

 very closely evenly and deeply serrate, 3-4 inches long : fruit 

 large, round-ovate ; ribs not greatly exceeding the intervals 

 in breadth. 



Margin of a stream at western shore of Mormon I,ake, 

 northern Arizona, 1908, collected by G. A. Pearson. Plant 

 related to C. occidentalis of Colorado and Wyoming, but with 

 much ampler foliage very remarkably incise-serrate ; the root- 

 stock and roots very characteristic. 



PERSIcaria granulata. Branched at the base, the 

 branches ascending, a foot long, very slender, the internodes 

 elongated and foliage sparse ; leaves narrowly lanceolate, 

 1/^-2/4 inches long, entire, punctate, glabrous, the midvein 

 beneath and the margins roughish with a few hair-points : 

 ocreae thin and hyaline, naked at the orifice, the uppermost 

 short and open : spikes few, oblong, Y\-\ V2 inches long, on 

 slender peduncles : ocreolae ovate, entire, glabrous except for 

 a granular-scaberulous indument which is equally obvious 

 upon the whole exterior of the perianth : achenes small, pol- 

 ished, the style cleft nearly to the base and the recurved 

 branches inclined to be persistent. 



Collected on the Rio Verde in Arizona, in 1867, by Dr. 

 Smart ; type in U. S. Herb., the sheet not numbered. 



