Dicotyledones. 41 



3. Anemone quinquefdlia, L. (L., quinque, five ; folium, leaf.) Windflower. 

 {Anemone Nemerosa in Gray's "Manual.") 4 to 9 inches high from horizontal 

 rootstocks. Basal leaves long-petioled, appearing later than the flowering stem. 

 5-parted, the divisions dentate. Involucre leaves 3-5-parted, on slender petioles. 

 Solitary flower about i inch broad; sepals 4-9, white or purplish. Achenes 

 pubescent, tipped with the hooked style. Margins of woods. 



4. Anemone patens, L. (L., patens, exposed.) Var. Nuttalliana, Gray. 

 Pasque Flower. Perennial herbs rising from a thick rootstock, from 6 to i5 

 inches high, silky-villous. Basal leaves much divided into linear lobes, on slender 

 petioles. Involucre leaves a short distance below the flowers, erect, and forming 

 a shallow cup, divided into linear segments above. Light bluish purple sepals 

 ovate-oblong. Achenes with long, persistent, plumose styles. In dry prairies. 



VI. HEPATICA. Liverleaf. 



(Gr., hepatikos, from hepar, liver; from supposed resemblance of leaves to the liver.) 



Low perennial herbs with long-petioled, 3-lobed, ba.sal leaves, per- 

 sisting through the winter. Flowers rather large, solitary, on slender 

 scapes, white or purple. Sepals petallike. Involucre of 3 sessile leaves 

 close under the flower and resembling a calyx. 



i, Hepatica triloba, Chaix. (Gr., tri, three; lobos, lobe.) Round-lobed 

 Liverleaf. Lobes of the leaves and of the involucre rounded or obtuse. 

 Flowers blue, purple, or white on villous scapes. In woods. 



2. Hepatica acutiloba, DC. (L., acutus, sharp; Gr., lobos, lobe.) Sharp- 

 lobed Liverleaf. Lobes of the leaves and of the involucre acute. In other 

 respects closely resembling the preceding species. In woods. 



VII. MYOSTJRUS. Mousetail. 



(Gr., iiiys, mouse; oura, tail.) 



Small annuals with linear basal leaves and i-flowered scapes. Sepals 

 usually 5 with a basal spur. Petals 5, small, with a slender claw which 

 is nectariferous at the summit. Stamens 5-25. Pistils many on a 

 slender axis which becomes greatly elongated in fruit. 



I. Myosurus minimus, L. {\^., minimus, least.) Mousetail. From i to 6 

 inches high; scapes at length longer than the leaves. The receptacle becoming 

 an inch or more in length. In moist soil. 



Vin. RANUNCULUS. Crowfoot or Buttercup. 



(Pliny's name for these plants, meaning a little frog, since many occur where frogs abound.) 



Annual or perennial herbs, usually with both basal and stem leaves, 

 without involucres and with both sepals and petals, flowers usually yel- 



