O COMMON CANADIAN WILD PLANTS. 



5. MYOSU'RUS, Dill. MOUSETAJL. 



1. M. min'imus, L. Scapes 2-6 inches high. Leaves 

 linear-spathulate. Achenes blunt, in a spike 1-2 inches 

 long when ripe. 



2. M. arista'tus, Benth., is easily distinguished from the 

 above by the persistent style nearly as long as the achene. 



N.W. 



6. RANUN'CIIHJS, L. CROWFOOT. BUTTERCUP. 



1. R. aquat'ilis, L., var. trichophyl'lus, Gray. (WHITE 

 WATER-CROWFOOT.) Foliage under water, filiform, usually 

 collapsing when withdrawn from the water. Flowers white, 

 floating, each petal with a little pit on the inside of the 

 claw. Stagnant pools and slow-flowing streams. 



2. R. eireina'tUS, Sibth. Much like No. 1, but the 

 immersed leaves are mostly sessile, and do not collapse when 

 withdrawn from the water. Toronto harbour ; and abund- 

 ant in N. W. 



3. R. Cymbala'ria, Pursh. (SEA-SIDE CROWFOOT.) Low, 

 smooth, spreading by runners which take root at the joints. 

 Leaves long-petioled, roundish, crenate, rather fleshy. Pet- 

 als 5-8, yellow. Carpels stria te, in an oblong head. Sea- 

 shore, and beside brackish streams and springs. 



4. R. multif idus, Pursh. (YELLOW WATER-CROWTOOT.) 

 Like No. 1, but larger, and with yellow flowers, sometimes 

 creeping in the mud ; the leaves round kidney-shaped, and 

 more or less deeply lobed and toothed. Ponds and ditches. 



5. R. Flam'mula, L., var. reptans, Meyer. (CREEPING 

 SPEARWORT.) Stem reclining, rooting at the joints, only 3-6 

 inches long. Leaves linear, entire, remote. Flowers yellow, 

 J of an inch broad. Sandy and gravelly shores of ponds 

 and rivers. 



6. R. rhomboi'deus, Groldie. Stem erect, low (3-8 inches), 

 hairy ; root-leaves roundish or rhombic-ovate, mostly cre- 

 nate ; lowest stem-leaves similar or 3-5-lobed, the upper 

 nearly sessile and deeply cut into linear lobes. Petals large, 

 exceeding the calyx ; achenes orbicular, with a minute beak. 

 in a globular head. Dry plains, in early summer. 



