The Flora of the Cayuga Lake Basin 187 



Newf. to Ont. and Minn., southw. to N. T. and Kans. ; infrequent on the Coastal 

 Plain. 



4. R. crispus L. Yellow or Curly Dock. 



A weed of cultivated and waste ground, roadsides, and like situations, in rich, 

 especially heavy, soils of various types ; very common. June-Sept. 



Almost throughout N. A. except in the extreme North ; also in W. I. and Mex. 

 Naturalized from Eu. 



The grains vary from obtuse to acute, frequently on the same plant ; hence the 

 separation of those plants with more acute grains, as R. elongatus Guss., seems 

 scarcely warranted. 



5. R. verticillatus L. Swamp Dock. 



Marshes and swales, in rich alluvial or lake-bottom soils ; locally abundant. June- 

 July. 



Summit Marsh (D.) ; Inlet Marshes (£>.!) ; Cayuga Marshes (D.\) ; around Salt 

 Pond w. of Howland Island; and elsewhere (D.). 



YV. Que., Vt., and e. Mass. (?), to Iowa, southw. to Fla. and Tex.; apparently 

 infrequent on the Coastal Plain. 



A plant of the rich lands of the interior. 



[R. conglomeratus Murr. 



"Near the Marl Ponds, Cortland" (D.). Though carefully sought there, this 

 species has not since been found. Judging from its range, its occurrence at Cortland is 

 very doubtful.] 



6. R. obtusifolius L. Bitter or Broad-leaved Dock. 



A weed of fields, roadsides, and waste places, in rather rich, moist, or shaded soils ; 

 not uncommon. July-Sept. 



Newf. to B. C. and Oreg., southw. to Fla. and Tex. Naturalized from Eurasia. 



Specimens from Dryden Lake, near Renwick, and by the roadside in Danby, 

 which combine characters of this species and R. crispus, Dudley interprets as hybrids 

 between these two species. 



[R. maritimus L. (See Rhodora 17:80. 1915.) 



This species, or some variety of it, was found in ballast in the L. V. R. R. yards 

 at Ithaca in 1917, but has not been seen since. The material was young.] 



7. R. Acetosa L. Garden Sorrel. 

 Fields and waste places ; rare. 



Roadside and adjoining field, n. slope of Connecticut Hill, abundant, 1924; one or 

 two plants near the old Insectary (site of Baker Hall) previous to 1921. 



Newf., Que., Vt., N. Y., and Pa. Introduced from Eurasia, but possibly native in 

 the Far North and Northwest (Lab. to Alaska). 



8. R. Acetosella L. Sheep Sorrel. Field Sorrel. 



A weed of fields, roadsides, and waste places, in gravelly or sandy, rather sterile, 

 soils ; very common. May-Sept. 



Throughout N. A. except in the extreme North. Naturalized from Eu. 



[Fagopyrum (Tourn.) Gaertn.] 

 [F. esculentum Moench. Buckwheat. 



Roadsides, railroad embankments, and old fields; escaped from cultivation, and 

 doubtfully established. June-Sept. 

 Native of Eu.l 



