OedebI.— THE CROWFOOTS. 147 



3. HEPAT'IOA. Noble Liverwort. 



Oalyx (generally called an involucre) of 3 

 entire, ovate, green sepals (or Ijraots), situated 

 a very little below the corolla. Corolla of 5-9 

 petals, arranged in 2 or three rows. Achenia 

 without tails. — y Pretty little plants blossoming ; 

 in early ' spring. Leaves all radical, thick, 

 8-lobed, green through the winter. Mowers 

 numerous, one on each scape, blue, roseate, or 

 white. 



Fig. 371. -Flower and leaf of H. triloba.' 



1 H. tril'oba. Leaf-lobes and sepals obtuse. Scapes hairy, several inches high. 



2 H. acutil'oba. Leaf-lobes and sepals acute. FIs. and scapes like the other. 



4. EA-NUN'OULUS. Crowfoot. Buttercups. 



Galys of 5 ovate sepals. Corolla of 5 roundish, shining petals, each 

 with a h(5neyed scale or pore at the base inside. Stamens 00. Achenia 

 numerous, flattened, crowded in a roundish ' or oblong head. — A large' 

 genus of herbs mostly perennial' ( 2f ) and with yellow flowersi Leaves di- 

 vided or entire. Juice very acrid. 



§ Petals yellow. Seeds' (carpels) rough with prickles. FIs. small. S 1,2 



§ Petals yellow. Seeds smooth and even .' . . ) 



§ Petals white (claws yellow). Seeds wrinkled crosswise f 



a Leaves all undivided. Plants growing in wet places 5-8 



a Leaves more or less divided, not growing under water b. 



= Leaves in fine, thread-like divisions, growing under water 3, 4 



b Boot leaves neither divided nor cleft, merely crenate 9, 10 



b Lower leaves S-cleft hut not divided to' the has?. Height l-2f . . . .11-18 

 b Leaves all ternately divided and much cleft. . . .c 



c Sepals reflexed in flower. Plants erect 14, 15 



c Sepals spreading in flower, shorter than the petals. . . .16-18 



1 E. murioa'tus. BougTi-fruited 0. Plant smooth. Seeds with large, stout, hooked 



beaks. Sepals spreading. Leaves 8-lobed and cleft. South. 



2 B. parviflo'ms. Smallrflowered 0. Plant hairy. ' Seeds with a very short- beak. 



Sepals finally reflexed. Leaves 3-lobed and cleft. South. 

 3E. aqnat'ms. Water Crowfoot. In ponds and rivers. Tbe wA«i« petals with a 



cavity at base. Only the flowers above water. Swirumer. 

 4 K. Pursh'ii. PursWs Crowfoot. In stagnant water. ' The yellow petals with 



a scale at base. Floating leaves, 8-n-pnrted. Sprimj. 



