CROWFOOT FAMILY 305 



Filaments whitish; raceme short; pedicels in fruit 1-3 cm. long. 



Fruit white, ellipsoid, 9-12 mm. long. 1. A, eburnca. 

 Fruit red. 



Fruit ellipsoid, 10-12 mm. long. 2. A. rubra. 



Fruit spherical or nearly so, 5-7 mm. long. 3. A. arguta. 

 Filaments greenish; raceme elongate; pedicels very short, even in fruit less than 1 cm. 



long; fruit red. 4. A. viridijlora. 



1. A. eburnea Rydb. Stem 6-10 dm. high, glabrate or villous-puberulent 

 above; leaves ternate or twice ternate, the divisions pinnate; leaflets ovate, usually 

 3-5-lobed, and sharply serrate; pedicels slender; sepals orbicular, early deciduous; 

 petals narrowly rhombic-spatulate, acute; fruit about 12-soeded; seeds obliquely ^^y 

 pear-shaped, about 4 mm. long. In rich woods: B.C. — Ore.— Utah— Colo. — • \ti 

 S.D.; n N.Y. — Newf. SubmonL—MonL My-Je. 



2. A. rubra (Ait.) Willd, Like the preceding, but lower, 3-6 dm. high; 

 leaflets shorter and broader, firmer, darker, acute or short-acuminate; teeth 

 coarser, less sharp; pedicels more divaricate; petals spatulate, acute; seeds about 

 3 mm. long. Rich woods: N.S. — N.J. — la. — Mont. — Alta. Boreal — Mont, 

 My-Je. 



3. A. arguta Nutt. Very similar to A, ehurnea in habit, fully as tall; 

 leaflets very thin and light green, long-acuminate and very sharply toothed; 

 sepals with long claws and rhombic acute blades; seeds about 10, about 3 mm, 

 long. Woods: Alaska — Cahf. — N.M.— S.D.— Alta. Submont. — Mont, My-Je. 



4. A, viridiflora Greene. Stems usually several from the rootstock, fully 

 as tall. as in the preceding; leaflets darker green, ovate-lanceolate, more regularly 

 toothed, more pubescent w^hen young; petals clawed; blades ovate, obovate or 

 lanceolate, usually greenish; fruit red, 10-12-seeded. A, multicaulis Greene. 

 Rocky woods: Ariz.^ — -Colo. — -N.M. Submont. — Mont, Je-JL 



20. AQUILEGIA (Tourn.) L. Columbine. 



Perennial herbs, with rootstocks and branching stems. Leaves basal and 

 \ cauhne, ternately decompound. Flowers perfect, usually large and showy, 

 regular. Sepals 5, petal-like, deciduous. Petals concave, produced below into 

 a hollow spur, or at least saccate. Stamens numerous, the inner reduced to 

 staminodia; filaments more or less flattened. Pistils 5, sessile, many-ovuled. 

 Fruit follicles, many-seeded, with slender styles. Seeds nimierous, smooth and 

 shining, with a hard coat. 



Plant very low; stem scapiform and 1-fliowered; spur curved; flower blue or purple. 



1. A, Jonesii. 



Stem more or less leafy. 



Petals merely saccate, not spurred at the base; terminal leaflet rhombic, acute. 



2. A. Eastwoodiae. 



Petals spurred; all leaflets obtuse. 



Lamina of the petals longer than the strongly curved spurs, truncate. 



Stems many times exceeding the basal leaves; styles in fruit about one- fourth 



as long as the follicles. 3. A, brevistyla. 



Stem only slightly exceeding the basal leaves; styles in fruit about half as long 



as the follicles. 

 Plant perfectly glabrous; flowers blue. 4. A. saximontana. 



Peduncles and follicles sparingly hairj*; flowers sulphur-yellow or greenish. 



5. A. larimiensis . 



Lamina of the petals shorter than the slightly curved or straight spurs. 

 Spur not over 2 cm. long; flowers nodding. 



Sepals and spurs red; spur usually straight (except in No. 9). 



Lamina of the petals small, less than 4 mm. long or none; sepals spread- 

 ing or reflexed. 

 Sepals 10-15 mm. long, shorter than or rarely equalling the spurs. 



6. A. truncata. 

 Sepals 15-25 nun. long, exceeding the spurs. 7. A. Columbiana. 



Lamina of the petals 6-12 mm. long. 



Sepals spreading or reflexed, longer than the spm^. S. A, formosa. 

 Sepals ascending, usually shorter than the spurs. 



Sepals much longer than the lamina of the petals; spur incurved. 



9. A, latiuscuia. 



Sepals ecLUalling or little exceeding the lamina of the petals; 



spur straight. 

 Spur gradually tapering to the apex; follicles glabrous. 



10. A. rubicunda. 



14 



