RAN UNC ULA CE^E. 



193 



1. R. ABORTIVUS (Small-flowered Crowfoot). Stem erect, branching, 

 very smooth ; radical leaves reniform, upper ones 3-5-lobed ; flowers small, 

 yellow ; fruit in heads ; style very short, straight. This species grows 10'- 

 18' high. Damp woods. May-June. 



2. R. RECURVATUS ( Wood Crowfoot). Stem erect, hairy ; leaves deeply 

 3-parted, segments ovate, dentate, pubescent ; flowers small, greenish yellow ; 

 petals narrow, scarcely equal to the reflexed sepals ; achenia in globose 

 heads, tipped with the minute, hooked styles. June. 



3. R. ACRIS (Buttercups). Stem erect, branching, often hollow hairy ; 

 leaves generally pubescent, deeply 3-parted ; segments deeply incised, divis- 

 ions of the upper ones linear ; flowers large, of a burnished golden yellow ; 

 calyx spreading ; heads globose ; achenia, beak short, recurved. Common, 

 1-2 feet high. June-September. 



4. R. REPENS (Creeping Crowfoot}. Stem stoloniferous, mostly smooth ; 

 leaves on long petioles, trifoliate, segments deeply 3-lobed ; peduncles fur- 

 rowed ; flowers yellow ; sepals spreading ; stems 1-3 feet long, with dark 

 leaves. Wet grounds. Common. May-July. 



5. R. AQUATILIS (White Water Crowfoot}. Stem floating; submerged 

 leaves filiformly dissected, the emersed, when present, 3-parted ; flowers 

 rather small, dull white, about i' out of water ; petals dull white, with yel- 

 low claws. May-August. 



6. Caltha. Sepals 5-9, resembling petals. Petals none. Ova- 

 ries 5-10. Follicles 5-10, compressed, erect, many-seeded, it 



i. C. PALUSTRIS (Marsh Marigold). Plant very smooth ; stem erect, hol- 

 low, leaves re.niform, crenate ; flowers large, bright yellow, pedunculate, in 

 umbellate clusters of 3-5. April-May. 



7. Coptis. Sepals 5-7, petaloid, deciduous. Petals 5-7. Sta- 

 mens 15-25. Follicles 5-10, stipitate, somewhat steliately diverging, 

 4-8-seeded. n 



i. C. TRIFOLIA (Goldthread). Leaves radical, ternate ; leaflets sessile, 

 wedge-obovate, on petioles i'-2 r long ; peduncles twice as long, slender, i- 

 flowered, with a single, minute bract above the middle ; petals minute, yel- 

 low ; stamens white ; root slender, creeping, of a golden yellow. A delicate 

 little plant, growing in bogs. May. 



8. Aquilegia. Sepals 5, petaloid. Petals 5, tubular, extending 

 below into long, spurred nectaries. Follicles 5, erect, many- seeded, 

 tipped with the style, if 



i. A. CANADENSIS (Columbine'). Stem erect, smooth, branching ; lower 

 leaves biternate ; leaflets on long petioles, 3-lobed ; flowers large, nodding, 

 scarlet ; sepals ovate-oblong ; petals scarlet below, each with a straight spur, 

 with honey. A beautiful plant, growing 1-2 feet high, in the clefts of rocks. 

 May. 



9. Delphinium. Sepals 5, irregular, the upper with a spur. Petals 4, 

 irregular, the upper two forming spurs. Pistils 1-5 ; many-seeded pods. 



