WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 193 
New Mexico: Common except along the eastern side of the State. In cultivated 
fields and along ditches, from the Lower Sonoran to the Transition Zone. 
Along ditches and streams and in fields wherever crops are cultivated in the State, 
this is the common dock. It is very resistant to alkali and often occurs in alkali spots. 
It has been confused with the seacoast plant R. salicifolius Weinm.,! a species of 
restricted distribution on the Californian coast. 
9. Rumex obtusifolius L. Sp. Pl. 335. 1753. BITTER DOCK. 
Type Locauity: ‘‘Habitat in Germania, Helvetia, Gallia, Anglia,’”’ — 
RanGeE: A native of Europe, introduced into many parts of America, 
New Mexico: Kingston (Metcalfe 1099). 
A large, thick-stemmed dock, 60 to 90 cm. high, resembling R, occidentalis in general 
appearance, but with broader leaves. It is readily distinguished from that species by 
the structure of the fruiting calyx. In this the valves have 3 to 5 thin, spinelike 
teeth on each side and smooth callosities, while in 2. occidentalis the callosities are 
absent and the margin of the valves is entire or remotely denticulate. 
10. Rumex persicarioides L. Sp. Pl. 335. 1753. GOLDEN DOCK. 
Type Locauity: “‘Habitat in Virginia.”’ 
Rance: Throughout temperate North America. 
New Mexico: Mangas Springs; mountains southeast of Patterson; Cliff; Dulce 
Shiprock; Farmington. Along streams and ditches, in the Upper Sonoran Zone. 
4. GONOPYRUM Fisch. & Mey. 
Low shrub, | meter high or less, with stout erect stems; leaves linear, glaucous, 
fleshy, jointed to the ocrex; flowers perfect, solitary, on jointed pedicels; sepals 5, 
white, the 3 inner developing wings at maturity, the 2 outer reflexed; achene elliptic, 
‘oblong, brown, pointed at both ends. 
1. Gonopyrum americanum Fisch. & Mey. Mém. Acad. St. Pétersb. VI. Sci. 
Nat. 4!: 144, 1845. 
Polygonella ericoides Engelm. & Gray, Bost. Journ. Nat. Hist. 5: 231. 1845, 
Type Locauity: Texas, 
RanGeE: Georgia to Arkansas, eastern Texas, and central New Mexico. 
New Mexico: Tijeras Canyon (C. R, Ellis). Sandy soil, in the Upper Sonoran 
Zone, 
This is a most remarkable extension of range for a plant not known heretofore from 
any station west of eastern Texas. It occurs, however, even in the southeast, only 
locally. Our specimens seem to agree very well with eastern material, but they are 
rather fragmentary; perhaps if they were more ample some difference might be dis- 
covered. 
5. POLYGONUM L. Kwnorweep. 
Annuals with slender stems branching near the base, prostrate or erect; leaves small, 
alternate, elliptic to linear-lanceolate, obtuse or acute, entire, the upper generally 
much reduced; ocres hyaline, at length lacerate, not fringed; flowers axillary in short 
few-flowered clusters, sometimes solitary; calyx of 5 or 6 greenish sepals with white 
or pink margins; stamens 8 or fewer, at least the inner with dilated filaments; achenes 
3-angled, surrounded by the persistent calyx. 
1See, Fernald, M.L. The representatives of Rumezx salicifolius in eastern America, 
Rhodora 10: 71. 1908. 
52576° —15——_13. 
