Jones: Flora of Illinois, 83. Rosaceae 151 



common. June-July. Known from Vermilion, Tazewell, and Peoria counties; 

 probably occurring elsewhere in 111. 



8. Geum L. — Avens 



1. Sepals becoming reflexed; petals yellow or white; styles jointed, bent near 

 the middle, the upper part deciduous, the lower persistent, hooked. 

 2. Receptacle stalked in the calyx; petals yellow, 2 mm. long; fruiting heads 

 at maturity about 1 cm. in diameter; achenes puberulent; woods, com- 

 mon. Apr.-May. Spring Avens G. vernum (Raf.) T. dC G. 



2. Receptacle sessile; calyx with 5 bractlets alternating with the sepals. 

 3. Petals white or cream, as long as the sepals or shorter. 



4. Peduncles softly velutinous-pubescent or puberulent; petals 5-7 mm. 

 long, equalling or slightly exceeding the sepals; mature fruiting 

 heads 1-1.5 cm. in diameter; receptacle copiously villous-hispid; 

 woods, thickets, and roadsides, common. June-Aug. [G. alburn 



Gmel.j White Avens G. canadense Jacq. 



4. Peduncles hirsute; petals 3-4 mm. long, shorter than the sepals; ma- 

 ture fruiting heads 1.5-2 cm. in diameter; receptacle glabrous or 

 nearly so; wet ground in woods and thickets. June-July. [G. vir- 



ginianum sensu auth., non L.} G. laciniatum Murr. 



3. Petals golden yellow, 5-8 mm. long, exceeding the sepals; receptacle 

 pubescent; moist thickets and roadsides. June-July. Yellow Avens .... 

 G. strictum Ait. 



1. Sepals not reflexed; petals purplish, shorter than the sepals; styles persistent, 

 plumose, not jointed; dry ground n. 111.. May-June. \_Sieversia triflora 

 (Pursh) R. Br.] G. triflorum Pursh 



9. Sanguisorba L. 



S. canadensis L. Moist ground, rare. Ottawa, Sept. 28, 1882, Seymour; 

 Joliet, Sept. 25, 1907, Hill; Troy, Sept. 25, 1907, Hill. 



10. Agrimonia L. — Agrimony 

 1. Principal leaflets 5-9, oval to obovate. 



2. Axis of raceme and lower surface of leaflets pubescent; fruiting calyx 

 turbinate. 

 3. Axis of raceme finely glandular and with a few long spreading hairs; 

 leaflets glabrous beneath or merely sparsely hirsute on the veins; 

 fruiting calyx 4-5 mm. long, with numerous radiating bristles; roots 

 not tuberous; woods and thickets, centr. and n. 111. June-Aug. \_A. 

 hirsuta (Muhl.) Bickn.] A. gryposepala Wallr. 



3. Axis of raceme softly appressed- pubescent, not glandular, and without 

 longer spreading hairs; leaflets softly pubescent beneath, especially 

 along the veins; fruiting calyx 2.5-3 mm. long, with few ascending 

 or erect bristles; roots tuberous-thickened; open woods. July-Sept. 

 {A. mollis (T. & G.) Britt.} A. pubescens Wallr. 



2. Axis of raceme glandular and puberulent, but not pubescent; lower sur- 

 face of leaflets glabrous or nearly so, gland-dotted; fruiting calyx hemi- 



