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American Midland Naturalist Monograph No. 4 



long, the margins finely toothed; flowers small, about Yg inch across, brownish; 

 fruits globose capsules, about 3/16 inch in diameter, covered with dark rough 

 glandular swellings, splitting from the top into 5 sections. 



Occurrence. — grand canyon : Creek trail below Phantom Point, 3,000 feet. 



Tamarisk Family (Tamaricaceae) 



French Tamarisk (Tamarix gallica L.). — This is a conspicuous shrub 



escaped from cultivation and found in many places in the Southwest, especially 



along or near water courses, and often forming thickets. The numerous tiny 



leaves closely clothing the slender stems is suggestive of a type of cedar. The 



species is sometimes called salt cedar because of its ability to withstand the 



alkali soil. During the spring and early summer large spreading clusters of 



small pink flowers are borne at the ends of the branches. 



Occurrence. — ZION : along the Virgin River; Coalpits Wash, 3,665 teet. GRAND 

 CANYON. Canyon, occasional: along the Colorado River from Nankoweap Creek to 

 foot of the Tanner trail; Bright Angel Creek near Phantom Ranch. 



Ginseng Family (Araliaceae) 



American Devil's Club (Oplopanax horridum (Sm.) Miquel.), fig. 

 101. — Stout thick-stemmed shrub 3 to 6 feet high, the stems and under sur- 

 face of the leaves densely covered with stout light green or straw-colored 

 prickles; leaf-blades large, 1/3 to 1 foot across, roundish, the margins deeply 

 lobed and irregularly toothed, borne on thick prickly leaf-stems; flowers green- 

 ish-white, borne in oblong clusters at the ends of the stems; fruits bright red 

 berries forming club-shaped clusters at the tops of the stems. (Syns. Fatsia 

 horridus (Sm.) B. & H., Echinopanax horridum (Sm.) Dene. & Planch.) 



This shrub is well named "devil's club" because of the stout spines or 

 prickles which thickly cover the whole plant from the ground up, including 



Fig. 101. American devil's club (Oplopanax horridum). 



