WOOTON AND STANDLEY FLOKA 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 arc 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., 1 a species of 

 restricted distribution on the Californian coast. 



9. Rumex obtusifolius L. Sp. IT. 335. 1753. Bitter dock. 

 Type locality: "Habitat in Germania, Helvetia, Gallia, Anglia." 



Range: 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 A', orci/lentalis in general 

 appearance, but with broader leaves. It is readily distinguished from thai spei Lea by 

 the structure of the fruiting calyx. In this the valves have :> to 5 thin, spinelike 

 teeth on each side and smooth callosities, while in A. occidentalis the callosities are 

 absent and the margin of the valves is entire or remotely denticulate. 



10. Rumex persicarioides L. Sp. PI. 335. 1753. Golden dock. 

 Type locality: "Habitat in Virginia." 



Range: Throughout temperate North America. 



New Mexico: Mangas Springs; mountains southeast of Patterson; Cliff; I>ulce 

 Shiprock; Farmington. Along streams and ditches, in the Upper Sonoran Zone. 



4. GONOPYRUM Finch. & Mey. 



Low shrub, 1 meter high or less, with stout erect stems; leaves linear, glaucous, 

 fleshy, jointed to the ocrete; 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 I-'isch. &. Mey. Mem. Acad. Si. P^tersb. VI. Sri. 

 Nat, 4 1 : 141. 1845. 



Poli/gonclla ericoides Engelm. & Gray, Bost. Journ. Nat. Hist. 5: 231. L845. 



Type locality: Texas. 



Range: Georgia to Arkansas, eastern Texas, and centra] 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 nol known heretofore from 

 any station west of eastern Texas. It occurs, however, even in tin' southeast, only 

 locally. Our specimens seem to agree very well with i astern material, but tin 

 rath<T fragmentary; pcrbaps if they were more ample some difference mighl I"- dis- 

 covered. 



5. POLYGONUM L. 



Annuals wit Ii plender stems branching near the ba r , pro,- (rate on nrl; leaves small, 

 alternate, elliptic to lineardanccokui, obtuse "i ■'■ i to, entire, th ■ upper generally 

 much reduced; ocrese hyaline, at length Lacerate, not [ringed p ciliary in short 



few-flowered clusters, sometimes solitary; calyx of •"> or I h sepals with \ 



<>r pink margins; stamens 8 or fewer, a1 least the inner with dilated filaments; acb 

 3-angled, surrounded by the persistenl calyx. 



1 See, Femald, M.L. The representatives of J • item Amei 



Rhodora 10: 71. 



52676° — 16 13 



