168 University of California Publications in Botany [Vol. 9 



J, B. Lembert in 1893; near Fallen Leaf Lake, Tahoe, 6,700 feet, 

 Smiley 298 ;Mt. Gocldard, Yosemite, 10,200 feet. Hall and Chandler 

 661; trail to Mt. Whitney, Culbertson (B 4371) ; Bloody Canon, Mono 

 County, Chesnut and Drew, July 20, 1889 ; Volcano meadows, Tulare 

 County, Dudley 2499; Funston's Kaweah meadow, Dudley 2196. 



4. POLYGONUM 



Leaves (mostly narrow and lanceolate or linear) and bracts jointed upon a 

 very short petiole adnate to the short sheath by the lobed or lacerate 

 stipules; flowers in axillary clusters or crowded into a leafy terminal spike. 

 Small annuals with erect or ascending stems. 



Flowers erect; stems 1-6 inches high, branched or simple. 



Leaves ovate or oblong (% inches or less long), not diminished upwards; 



flowers distinctly pedicelled in the loose inflorescence ..1. P. minimum 



Leaves linear or narrowly lanceolate (%-l inch long); flowers sessile or 



subsessile in the dense inflorescence. 



Upper leaves obviously reduced, bracteate among the congested flowers; 



achene black 2. P. imbricatum 



Upper leaves little, if at all, reduced; achene light brown 



3. P. KeUoggil 



Flowers reflexed and remote; stems %-1.5 feet high, sparingly branched; 



leaves 1-1.3 inches long 4. P. Douglasii 



Perennial with suffrutescent branching prostrate stems and conspicuous 

 broad silvery stipules; flowers red or light pink 5. P. shastense 



Leaves ample, not jointed to the petiole. 



Flowers in a single dense raceme terminal upon the simple stem; glabrous 



perennial, %-2 feet high, of wet meadows 6. P. bistortoides 



Flowers in panicles or clusters. 



Leaves 3-6 inches long, glabrous; stems stout, %-6 feet high, branching. 

 Leaves lanceolate, firm; branching panicle densely many-flowered 



7. P. alpinum 



Leaves ovate, thin; panicle few-flowered 8. P. phytolaccaefoHum 



Leaves 94-1-5 inches long, ovate, minutely pubescent; stems 4-15 inches 

 high 9. P. Davisiae 



1. Polygonum minimum "Wats., Bot. King's Exped., p. 315. 1871. 



Type locality — "Wasatch and Uintah Mountains; 9-11,000 feet 

 altitude. ' ' 



Ra7ige. — Alaska south to the Siskiyou Mountains and central 

 Sierra Nevada and east to Colorado. 



Zone. — Canadian. 



Specimens examined. — Glen Alpine trail to Mt. Tallac, Dudley, 

 June 28, 1900 ; Webber Lake, Lemmon 1205 ; Donner Lake, Brandegee, 

 September, 1888; Gilmore Lake, on west side of Mt. Tallac, Tahoe, 

 8,600 feet. Smiley 377 ; Mt. Watkins, Yosemite, 6,900 feet. Hall 9170 ; 

 near foot of Mt. Silliman, 11,000 feet, Dudley 1513. 



