OKDEH 1. THE CROWFOOTS. 



147 



8. HEPAT'ICA. Noble Liverwort. 



Calyx (generally called an involucre) of 3 

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

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

 petals, arranged in 2 or three rows. Achenia 

 without tails. U Pretty little plants blossoming 

 in early spring. Leaves all radical, thick, 

 3-lobed, green through the winter. Flowers 

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

 white. 



Fig. 371. Flower and leaf of H. triloba." 



1 H. triToba. Leaf-lobes and sepals obtuse. Scapes hairy, several inches high 



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



4. KANUN'CULUS. Crowfoot. Buttercups. 



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

 with a honeyed 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 (U) and with yellow flowers. Leaves di- 

 vided or entire. Juice very acrid. 



Petals yellow. Seeds (carpels) rough with prickles. Fls. small. S 1, 2 



Petals yellow. Seeds smooth and even j 



Petals white (claws yellow). Seeds wrinkled crosswise j 



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



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

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

 b Hoot leaves neither divided nor cleft, merely crenate. . . .9, 10 



b Lower leaves 3-cleft but not divided to the base. 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.... 16-1 8 

 1 R. murica'ttis. Rough-fruited C. Plant smooth. Seeds with large, K^out, hooked 



beaks. Sepals spreading. Leaves 3-lobed and cleft. South. 

 R parviflo'rus. Small-flowered 0. Plant hairy. Seeds with a very short beak. 



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

 8 R aquat'ilis. Water Crowfoot. In ponds and rivers. The white petals with a 



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

 4 R. Pnrsh'ii. PursWs Crowfoot. In stagnant water. The yellow petals with 

 a scale at base. Floating leaves, 8-5-parted. Spring. 



