ROSACEAE. 151 



2. G. virginianum L. Similar to G. canadense in habit, but stouter, and 

 petals rather smaller: hypanthium hirsute: heads of achenes 12-16 mm. long: 

 achene-body 2.5-3 mm. long. Rather rare, in damp thickets. 



3. G. flavum (Porter) Bicknell. Stems 3-15 dm. tall, hirsute below: blades 

 of the lower leaves usually pinnately divided: sepals about twice as long as 

 the bractlets: achene-body about 3 mm. long. Common, in thickets and open 

 woods. 



4. G. strictum Ait. Stems 5-16 dm. tall: blades of the lower leaves pinnately 

 parted, sometimes lyrate, the divisions incised or pinnatifid: sepals triangular 

 to lanceolate, fully twice as long as the narrow bractlets: hypanthium finely 

 pubescent: petals broadly obovate or suborbicular, somewhat longer than the 

 sepals: heads of achenes 1.5-2 cm. long: achene-body 3-3.5 mm. long. N. 

 Rare, in woods. Sandstones and shales. 



13. FIUPENDULA [Tourn.] Hill. Perennial caulescent herbs. Leaf^ 

 blades pinnate. Flowers numerous, borne in corymbose cymes. Sepals entire. 

 Petals broad, white, pink, or purple. Carpels 5-15: style short: stigma capi- 

 tate. Achene capsule-like. 



1. F. rubra (Hill) B. L. Robinson. Plants 5-24 dm. taU: lower leaves 3-9 

 dm. tall; blades of the leaflets palmately 3-5-lobed: sepals almost half- 

 orbicular: petals 2-3 mm. long, pink or purple; the blades suborbicular: fruits 

 6-7 mm. long, clavate. S. Rather rare, in swamps. Schists. Sum. 



QUEEN-OF-THE-PRAIRIE. 



14. AGRIMONIA [Tourn.] L. Perennial, often glandular, caulescent 

 herbs. Leaf -blades unequally and interruptedly pinnate. Flowers small, in 

 virgate interrupted racemes. Hypanthium fluted, armed with hooked bristles. 

 Sepals green, persistent. Petals yellow. Stamens 5-15. Filaments subulate. 

 Style terminal. AGRIMONY. 



Lower surface of the leaves, and racemes, softly and closely pubescent. 

 Roots not tuberous-thickened : leaflets glandular-dotted beneath. 



Fruits with spreading bristles : leaflets mostly 11-17. 1. A. parviflora. 



Fruits with converging bristles : leaflets mostly 7-9. 2. A. striata. 



Roots tuberous-thickened : leaflets not glandular-dotted 



beneath. 



Leaflets 3-5 ; blade of the terminal one obovate or cuneate. 3. A. pumila. 

 Leaflets 5-9 or rarely more ; blade of the terminal one 



oblong to elliptic. 4. A. mollis. 



Lower surface of the leaves, and racemes, glabrous or with 



loosely spreading hairs. 



Roots tuberous-thickened : fruits 2.5-3.5 mm. high, hemi- 

 spheric, with few ascending bristles. 5. A. rostellata. 

 Roots not tuberous-thickened : fruits 6-12 mm. high, tur- 

 binate, with many radiating bristles. 6. A. gryposepala. 



1. A. parviflora Soland. Stems shaggy-pubescent, at least below: lower leaves 

 with 11-27 primary leaflets: sepals over 1.5 mm. long, abruptly pointed: petals 

 2.5-3 mm. long: mature hypanthium short-turbinate or somewhat dilated. 

 Common, in thickets and damp meadows. Spr. and sum. 



2. A. striata Michx. Stems soft-hirsute: lower leaves with 7-9 primary 

 leaflets: sepals fully 1.5 mm. long, acute: petals 3-4 mm. long: mature hypan- 

 thium long-turbinate. S. Not common, in thickets. Schists. Sum. 



3. A. pumila Muhl. Stems with spreading hairs: lower leaves with 3-5 

 primary leaflets, the terminal one obovate to cuneate: sepals mostly obtuse: 

 petals mostly 2.5-3 mm. long: mature hypanthium-body 4-5 mm. wide. S. 

 Rare, on shaded banks. Schists. Sum. 



4. A. mollis (T. & G.) Britton. Stems loosely tomentose and somewhat vil- 

 lous: lower leaves with 5-9 primary leaflets, the terminal one oblong to 



