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. Goddard, 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. Kelloggii 



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. bistortoid.es 



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. phytolaccaefolium 



Leaves % 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." 



Range. 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. 



