354 GEOLOGICAL SURVEY OP CANADA. 



519. FACOPYRUM. 



(1900.) F. TARTARICUM, Gaertn. (India-Wheat.) 



Polygonum Tartaricum, Linn. ; Macoun, Cat., III., 414. 

 An occasional escape from cultivation on waste heaps around cities. 



521. RUMEX. 



(1905.) R.PATIENTIA, Linn.; Macoun, Cat., III., 415. 

 Not uncommon along Carling's Creek, London, Ont. 1889. (Dearness.) 



(1906.) R. Brittanica, Linn.; Gray, Man., ed. VI., 438. 

 R. orbienlatus, Gray ; Macoun, Cat, III., 415. 



Distinguished from R. occidentalis, by the valves being grain-bearing, 

 whereas in that species they are naked. 



532. EUPHORBIA. 



(1943.) E. Preslii, Guss. ; Gray, Man., ed. VI., 453. 



E. hypericifolia, Macoun, Cat, III., 427. 

 We have no Canadian specimens of this species in our herbarium. 



(3180.) E. BSULA, Linn. ; Gray, Man., ed. VI., 456. 



Introduced along the banks of Bayfield Eiver, Huron Co,, Ont. 

 1889. (Dearness.) 



792. MACLURA, Nutt. (OSAGE ORANGE.) 



(3181.) M. AURANTIACA, Nutt. ; Gray, Man., ed. VI., 464. 



Cultivated for hedges in south-western Ontario. Becoming wild in 

 Essex County. (Macoun.) 



54O. URTICA. 



(1956.) U. Lyallif, Watson; Macoun, Cat., III., 430. 



Abundant in the valley of the Fraser from Agassiz to the coast ; 

 also at Nanaimo, Vancouver Island. (Macoun.) 



