56 Small : North American Polygonaceae 



Eriogonum fusiforme sp. nov. 



Annual (section Pedunctdata), glaucous. Leaves spreading; 

 blades suborbicular, 1-5 cm. in diameter, rounded or bluntly 

 apiculate at the apex, with scattered hairs on both surfaces, or 

 hirsute beneath, hirsute-ciliate ; petioles longer than the blades, or 

 shorter, hirsute : scapes solitary or tufted, 2-5 dm. tall, markedly 

 inflated below the several or many inflorescence-branches : pe- 

 duncles capillary, spreading, many times longer than the involu- 

 cres, abruptly bent at the base : involucres turbinate, barely 1 

 mm. long, the lobes ovate, shorter than the tube : calyxes white 

 or mainly so; lobes ovate, becoming 1.5 mm. long, closely 

 pubescent : filaments glabrous : ovary and styles glabrous : achenes 

 about 2 mm. long, the tips exserted. 



Type collected at Grand Junction, Colorado, June 20, 1893, 

 by De Alton Saunders ; the species is also represented by the fol- 

 lowing specimens : 



Colorado: Palisade, May 29, 1894, Crandall. Utah: St. 

 George, 1877, Palmer 434. Bluffs near Green River, June 15, 

 1901, Stokes. Arizona : Peach Springs, June 28, 1887, Tracy & 



Evans 315. 



This species differs from Eriogonum inflatum, its nearest relative, 

 in the much smaller turbinate and few-flowered involucres and the 

 usually numerous large and divaricate accessory inflorescence- 

 branches. 



Polygonum buxiforme nom. nov. 



Polygonum littorale Small, Mem. Dept. Bot. Columbia Coll. 1 : 102. 

 (excl. synon.) 1895. Not P. littorale Link. 



Polygonum rubescens sp. nov. 



Perennial or sometimes annual, glabrous, bright-green. Stems 

 ultimately branched at the base and above it, the branches ascend- 

 ing or spreading, 1-5 dm. long, striate : leaves scattered ; blades 

 thickish; narrowly oblong to elliptic or nearly linear, mainly 1-2.5 

 cm. long ; ocreae silvery, or brown at the base, at length lacerate : 

 flowers usually several in a cluster : calyxes becoming 3 mm. long; 

 lobes with whitish or pinkish margins : achenes triquetrous, 2-2.5 

 mm. long, dull and distinctly granulate or striate. 



Type collected in sandy soil at Parlin, Gunnison County, Colo- 

 rado, August 16, 1 90 1, by B. H. Smith, no. 33 ; other specimens 

 belonging here are as follows : 



Colorado: Larimer County, June 17, 1895, Cowcn. Idaho: 



