POLYGONACE^. 15 



RUMEX BAKERI. A yard high, the stems solitary or sev- 

 eral, from a deep-seated taproot parted below into coarse 

 fleshy-fibrous branches and with some more slender ones 

 radiating around the crown of the main root: leaves, thin, 

 glabrous, the basal ones with lanceolate-cordate blade 8 or 

 10 inches long on a petiole nearly as long, the cauline lance- 

 linear, short-petiolate, those of the long and rather narrow 

 panicle linear-acuminate, subsessile, 3 or 4 inches long, de- 

 flexed: fruit small (barely two lines wide), deltoid-suborbicu- 

 lar, very obtuse, grainless, delicately (but under a lens very 

 distinctly) pinnate-veined, the veins running into a distinct 

 favose reticulation toward the margin, but the margin 

 itself thin, nerveless, either entire or obscurely somewhat 

 crenate. 



Common in wet meadows about Gunnison, 22 August, 

 n. 903, seeming related to R. polyrhizus of the more north- 

 erly mountains. 



ERIOGONUM CHLORANTHUM. Near E. flavum, but more 

 widely cespitose, the many branches of the caudex relatively 

 much more elongated and densely invested throughout with 

 the remains of the foliage of former years; leaves much 

 thinner, spatulate-oblong, obtuse, hoary-tomentose beneath, 

 glabrate above, nearly 1 J inches long : scapiform peduncles 

 both slender and short, little surpassing the leaves, or even 

 scarcely equalling them : involucres solitary, many-flowered, 

 the flowers rather large, the cluster almost f inch broad: 

 perianths greenish-yellow, the segments equal, the tube 

 villous, acute at base but not stipitate. 



On stony alpine slopes of Mi Ouray, forming large mats, 

 20 August, h. 853. 



ERIOGONUM BAKERI. Allied to E. flavum, rather taller, 



