■*8 Canadian Record of Science. 



•Salsola kali, L., var. tkagus, DC. 



Reported from several localities in Ontario. Abundant 

 and spreading in Manitoba. 



Euphorbia Preslii, Guss. 



In cultivated fields near Chatham, Ont., 1894. {John 

 Macoun, Herb. No. 5898.) The only specimens in our 

 herbarium, though reported from Hamilton, Ont., by 

 Buchan. 



Sagittaria, Linn. 



The publication of Mr. Smith's revision of the North 

 American species of Sagittaria and Lopliotocarpiis in the 

 Sixth Eeport of the Missouri Botanic Garden has so 

 altered the nomenclature and has in a few instances so 

 materially affected our knowledge of the distribution of 

 the species known to occur in Canada, that a complete 

 revision of the references given by Prof. Macoun in Parts 

 IV. and V. of his catalogue is necessary. Many additional 

 references are also given, and the descriptions of two easily 

 confounded species are copied from Mr. Smith's revision, 

 as it is in the hands of very few Canadian botanists. All 

 our herbarium specimens have been examined by Mr. 

 Smith. 



.S. ARIFOLIA, Nutt. in herb. 



*S'. varicdilis, var. hastata, Macoun, Cat. Can. Plants, Vol. 

 II., p. 77, forms h and c in part. 



Terrestrial, or emergent aquatic, weak, ascending, 2 to 

 4 dm. high ; petioles rather stout, usually curving outward ; 

 blade of leaf 6 to 12 or 18 cm. long, arrow-shaped, acute, 

 the margin mostly straight or arcuate, basal lobes diverg- 

 •ent, acute or acuminate ; scape weak, ascending, simple or 

 rarely branched ; bracts lanceolate, acute, 8 to 20 mm. long, 

 scarious margined and obscurely veined, often reilexed ; 

 1 to 3 lower verticils pistillate ; fertile pedicels ascending, 

 15 to mostly 25 mm. long, or sometimes almost wanting ; 



