CROWFOOT FAMILY 305 



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



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

 Fruit red. 



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



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

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



long; fruit red. 4. A. viridiflora. 



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-seeded; seeds obliquely 

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

 S.D.; n N.Y. Newf. SubmontMont. 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. eburnea 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 Calif 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 when 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 

 cauline, 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 

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

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

 shining, with a hard coat. 



Plant very low; stem scapiform and 1-flowered; 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 hairy; 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 mm. long, exceeding the spurs. 7. A. columbiana. 



Lamina of the petals 612 mm. long. 



Sepals spreading or reflexed, longer than the spurs. 8. A. formosa. 

 Sepals ascending, usually shorter than the spurs. 



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



9. A. latiuscula. 

 Sepals equalling or little exceeding the lamina of the petals; 



spur straight. 

 Spur gradually tapering to the apex; follicles glabrous. 



10. A. rubicunda. 



14 



