6 CSOMMON CANADIAN WILD PLANTS. 



5. MTOSU'KBS, Dill. MOUSETAIL. 



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

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

 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'CIJLIJS, L. CROWFOOT. BuTTERCDP. 



1. R. aquat'ilis, L., var. triehophyl'lUS, Gray. (White 

 "Watek-Ckowpogt. ) 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 collapsing when withdrawn from the water.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 withdrawn from the water.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 Ckowpoot.) Low, 

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

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

 als 5-8, yellow.' Carpels striate, in an oblong head. — Sea- 

 shore, and beside brackish streams and springs. 



4. R. multif idus, Pursh. (Yellow "Watbr-Ceowtoot.) 

 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 

 Spbarwort.) 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, Goldie. 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 out into linear lobes. Petals large, 

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

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



