﻿North American Polygonaceae. 45* 



panulate ; tube 3.5-4 mm. high: calices yellow, glabrous, 5 mm. 

 long, contracted into a stipe-like base ; segments cuneate-spatu- 

 late, rounded at the apex, concave, the 3 inner narrower than the 

 three outer : filaments villous below the middle : achenes 3-angled, 

 glabrous. 



In alpine regions, northern California. Summer. 



Under the name Eriogonum Tolmianiun* Prof. Greene refers 

 to this plant as a " neat and pretty alpine species/' and this it is. 

 However, the species does not represent Hooker's E. Tolmianum % 

 and may be distinguished from it as well as from all its relatives- 

 in the umbellata group by the long, solitary pedicel which is sub- 

 tended by a whorl of several bracts. 



The type specimens were found by Prof. Greene on the Scott 

 Mountains, Siskiyou County, California, August 22, 1876. Alti- 

 tude about 2,500 meters. 



* Eriogonum vineum. 



Perennial from a stout tap root, closely white-tomentoseto the 

 flowers. Stems branching; branches tufted, clothed with the 

 persistent leaves or leaf-bases : leaves crowded ; blades suborbicular 

 or broadly oval, 5-8 mm. long, obtuse or rounded at the apex, 

 abruptly narrowed or truncate at the base ; petioles as long as the 

 blades or shorter : scapes erect, 2-8 cm. long, simple : bracts lan- 

 ceolate to ovate, united at the base : involucres 4-6 in terminal 

 heads, vase-shaped, 4.5-5.5 mm. high, angled, constricted near the 

 top; segments ovate, %-% as long as the tube, the tips recurved : 



calices vinous-red or cream-colored tinged with vinous-red, finally 

 5-6 mm. long, glabrous ; segments very unequal, the 3 outer 

 oval, cordate at the base, the 3 inner spatulate, more or less crisped : 

 filaments villous at the base: achenes glabrous, 3-angled, 4 mm. 

 long ; base acute ; angles margined at the apex. 



In the mountains, Oregon and California. Spring and sum- 

 mer. 1 5 50-2500 meters. 



Eriogonum ovahfoliiim together with several species has been 

 unfortunate at the hands of most of the later authors in being made 

 a group instead of a natural species. The present species is a con- 

 spicuous plant on account of the velvety white-tomentose foliage 

 and the large heads of vinous-red flowers. Besides the peculiar 

 color distinctions, the vase-shaped involucres and the large calices 

 readily separate the species from E. ovalifohum. 



*F1. Francis, 143-144. 



