BUCKWHEAT FAMILY. 



8. Eriogonum multiceps Xees. 

 Branched Eriogonum. (Fig. 1293.)' 



E. multiceps Nees, Max. Reise N. A. a: 446. 1841. 

 E. gnaphaloides Benth. Kew Jouni. Bot. 5: 263. 1853, 



Perennial by a slender root, scapose, densely 

 white-tomentose throughout; stems short, tufted, 

 much branched, sometimes several inches long. 

 Scapes simple, i / ~5 / high; leaves spatulate, *'- 

 2' long, numerous, obtuse at the apex, narrowed 

 below into petioles; inflorescence capitate; involu- 

 cres 3-12, sessile, i y^' long, 5-6-toothed, the teeth 

 acute; bracts foliaceous, spatulate; calyx white or 

 rose-color, i^ // -2^ // long, cainpanulate, some- 

 what villous, 6-cleft to about the middle, the seg- 

 ments cuneate, obtuse or emarginate; stamens and 

 style-branches exserted; achene ^" long. 



On dry plains, Nebraska and Colorado. June-Au?. 



545 



9. Eriogonum pauciflorum Pursh. Few- 

 flowered Eriogonum. (Fig. 1294.) 



E. pauciflorum Pursh, Fl. Am. Sept. 735. 1814. 

 Eriogonum parviflorum Nutt. Gen. i: 261. 1818. 



Perennial, root long and slender, stems very short, 

 simple or sparingly branched, loosely tufted, covered 

 by the scarious dilated bases of the petioles. Scapes 

 erect, slender, simple, slightly tomentose, 2'-6' high; 

 leaves linear or linear-spatulate, i'-3' long, rather ob- 

 tuse, but apparently acute from the strongly revolute 

 margins, glabrous or sparingly pubescent above, white- 

 tomentose or cottony beneath, narrowed into slender 

 petioles; inflorescence capitate; involucres 4-10, i%" 

 long, turbinate-campanulate, 5-toothed, the teeth ob- 

 tuse, more or less reflexed; calyx white, campanulate, 

 \ l /2 ff long, glabrous, the segments ovate; achene iV" 

 long, its faces swollen at about the middle, incon- 

 spicuously striate-reticulated. 



On dry plains, Nebraska and Colorado. July-Sept 



10. Eriogonum flavum Nutt. Yellow Eriogonum. 



Eriogonum flavum Nutt. Fras. Cat. 1813. 

 E. sericeum Pursh, Fl. Am. Sept. 277. 1814. 



Perennial, scapose, white-tomentose through- 

 out, root short, scaly, spindle-shaped, stem very 

 short and thick, simple and solitary or tufted 

 and creeping, woody. Scapes 2 / -i2 / tall, erect; 

 leaves crowded on the short stem, linear-oblong 

 or oblong-spatulate, i'~y long, mostly obtuse at 

 the apex, flat, narrowed into petioles; petioles 

 dilated at the base and imbricated; inflorescence 

 regularly umbellate; involucres top-shaped, 2"- 

 1%" long, nearly entire, rather densely clustered; 

 peduncles l /'-i l /2' long; bracts spatulate, folia- 

 ceous; calyx yellow, 3" high, top-shaped, very 

 villous, the segments obovate; stamens and style- 

 branches exserted ; achene constricted at the mid- 

 dle, 2" long, villous at the summit, the angles 

 undulate, the faces swollen. 



Nebraska and Kansas to the Northwest Territory 

 and Arizona. June-Sept. 



(Fig. 1295.) 



