1 92 SYSTEMATIC BOTANY. 



1. C. VIRGINIANA {Virgin's Bower}. Leaves ternate, smooth; leaflets 

 ovate, somewhat cordate at base ; flowers in panicles, often dioecious, white ; 

 fruit covered with long, feathery tails, which in autumn cause the plant to 

 appear at a distance as if in bloom. A vine, in thickets and low grounds, 

 10-15 feet long. July-August. 



2. Anemone. Involucre distant from the flower, composed of 3 

 incised leaves. Sepals 5-15, petaloid. Ovaries collected into roundish 

 or oval heads. Achenia mucronate. u 



1. A. NEMOROSA (Wood Anemone}. Stem simple, smooth; leaves ter- 

 nate ; leaflets 3-5-lobed ; involucre of 3 leaves, on short petioles near the top 

 of the stem ; flowers solitary, nodding, white, purplish outside ; heads of 

 achenia small, globose. A pretty little plant, growing from 3'-6' high, in old 

 woods and. thickets. April-May. 



2. A. VIRGINIANA (Wind-flower}. Stem pubescent; laaves ternate; 

 leaflets petiolulate, 2-3-cleft, ovate, dentate ; flowers greenish white, with 

 the sepals pubescent beneath, on long peduncles ; stem 2-3 feet high, with a 

 3-leaved involucre. A coarse-looking plant. Pastures and fields. June- 

 July. 



3. Hepatica. Involucre, very near the flower, of 3 ovate, obtuse 

 bracts. Sepals petaloid, 6-9 in number, in 2-3 rows. Petals none. 

 Achenia awnless. y. 



i. H. TRILOBA (Heart Liverwort). Acaulescent ; leaves broadly cor- 

 date, mostly 3-lobed, with the lobes entire, smooth, evergreen ; scapes hairy, 

 i-flowered, flower nodding ; involucre green, hairy ; sepals from bluish pur- 

 ple to nearly white, oblong, obtuse. One of the earliest spring flowers. 

 March-April. 



4. Thalictrum. Sepals 4-5, petaloid, caducous. Petals none. 

 Stamens numerous. Achenia 4-15, tipped with the stigma, falcate. 

 Flowers often dioecious, y. 



1. T. CORNUTI {Meadow Rue}. Stem erect, branching, smooth ; leaves 

 triternate, sessile ; leaflets rhomboidal, 2-3-lobed, mostly smooth ; flowers 

 in large, terminal, compound panicles, white, small, dioecious or polyga- 

 mous ; sepals caducous ; filaments somewhat clavate. A tall plant in wet 

 meadows, 3-8 feet high, with large leaves and a hollow stem. June- 

 August. 



2. T. ANEMONOIDES (Rue Anemone}. Stem low, simple, smooth ; radi- 

 cal leaves biternate, on long petioles ; leaflets rhomboidal, 2-3-lobed ; stem 

 leaves 3, ternate, nearly sessile, verticillate, resembling an involucre ; flowers 

 large, 3-6, in umbels ; sepals 6-10, oval, white or purple, not caducous. 

 April-May. 



5. Ranunculus. Sepals 5. Petals 5, with a scale or gland at 

 the base of- each petal inside. Flowers solitary ; stamens indefinite, 

 Achenia ovate, pointed, crowded into heads, if. 



