78 MISSOURI BOTANICAL GARDEN. 



1890), North Carolina, South Carolina, Georgia, Florida, 

 Alabama, Louisiana, Mississippi, Illinois, Missouri, Indian 

 Territory, and Texas, one collection (Hall, 1872, 540 in vari- 

 ous herbaria) with sublinear very hastate leaves. Plate 14. 



3. E. GEYERI, (Meisner). Somewhat tufted, about a 

 foot high; leaves exceptionally 3x9 cm., spatulate to 

 lanceolate or the shortest somewhat elliptical-ovate, obtuse 

 or acute, very gradually narrowed at base, neither auriclecl 

 nor hastate; inflorescence rather simple, with suberect 

 branches ; pedicels about as long as the fruit, jointed toward 

 the base; valves about 4 mm. in diameter, clawless, some- 

 times with a very minute rounded basal callosity; achene 

 1x2 mm. R. Engelmanni, /9 Geyeri, Meisn. in DC- 

 Prod. xiv. (1856) 64. R.paucifolius, Nutt. Mss., Watson, 

 Bot. King. (1871), 314. Parks etc., in the mountains, 

 from Wyoming and British America to Colorado, Utah, and 

 California. Specimens examined from N. Kootanie Pass, 

 Brit. Amer. (Dawson, 1883), Montana (Flathead Eiver, 

 Nuttall), Wyoming (Hayden, 1860; Parry, 1873,249; 

 Forwood, 1881, 66), Yellowstone Park (Lelterman, 1885; 

 Rnowlton, 1888), Colorado (North Park, Sheldon, 1881, 

 135), Utah (Watson, 1869,1054; Porter, 1873), Idaho 

 (Hayden, 1871), Washington (SuksdorJ, 1883; Bran- 

 degee, 1883, 1068), Oregon (Geyer, 488; Lyatt, 1860; 

 Cronkhite, 1864; Cusick, 1881, 984), and California 

 (Brewer, 1863, 1696; Lemmon, 1874, 711; tihockley, 1886, 

 495). Plate 15. 



4. R. ACETOSA, L. Simple, afoot or two high, fre- 

 quently papillate about the nodes and on the midrib of 

 leaves; leaves occasionally 4x10 cm., ovate or oblong- 

 ovate, mostly obtuse, deeply cordate with commonly acute 

 auricles, or subsagittate, a small tooth sometimes present 

 on each auricle; inflorescence rather simple and compact ; 

 pedicels about as long as the fruit, conspicuously jointed in 

 the middle ; outer sepals of pistillate flowers relatively large, 



