116 American Midland Naturalist Monograph No. 7 



6. Styles not jointed; dry ground, n. 111. May-June 



G. triflorum Pursh 



6. Styles jointed; wet meadows; Kane, McHenry, and Winnebago 



counties. May-Aug. Purple Avens G. rivale L. 



9. Sanguisorba L. 



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

 Seymour; Joliet, Sept. 25, 1907, Hill; Cass Co., Geyer. 



10. Agrimonia L. — Agrimony 



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



2. Leaflets minutely gland-dotted beneath, merely sparsely hirsute 



along the veins, or nearly glabrous. 



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



hairs; fruiting calyx turbinate, 4-5 mm long; roots not 



tuberous; woods and thickets, centr. and n. 111. Jvme-Aug. 



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



3. Axis of raceme glandular and puberulent but not hirsute; 

 fruiting calyx hemispherical, 2-3 mm long; roots tuberous- 

 thickened; woods; chiefly in the southern half of the state. 



July-Sept. [A. striata sensu auth., non Michx.] 



A. rostellata Wallr. 



2. Leaflets softly pubescent beneath, especially on the veins; axis 

 of raceme softly appressed-pubescent, not glandular, and 

 without longer spreading hairs; fruiting calyx turbinate, 2.5-3 

 mm long, with few ascending or erect bristles; roots tuberous- 

 thickened; open woods. July-Sept. {A. mollis (T. & G.) 



Britt.] A. puhesccns Wallr. 



1. Principal leaflets 11-17, lanceolate, pubescent and glandular- 

 granulifcrous beneath: fruiting calyx 3 mm long; moist ground 

 throughout 111. July-Sept A. parviflora Ait. 



11. Rubus L. — Bramble 

 1. Leaves simple, palmately 3- to 5-lobed, serrate, pubescent; stems 

 erect, glandular-pubescent or bristly, not prickly; flowers purple; 

 fruit red; woods and thickets, rare; Carroll, Cook, Kane, and 



La Salle counties. May- June. Flowering Raspberry 



R. odoratus L. 



1. Leaves compound; flowers white. 



2. Stems herbaceous, not all prickly; leaflets 3, rarely 5; fruit red, 

 globose; bogs in Cook, De Kalb, Lake, and Winnebago coun- 

 ties. May-June. Dwarf Raspberry. [R. triflorus Richards.] 



R. pubcsccns Raf. 



2. Stems more or less woody, biennial or perennial, usually prickly 

 or bristly. 

 3. Leaves whitish-tomentulose beneath; petals 5-6 mm long, not 

 longer than the sepals; fruit red or purplish, easily separat- 

 ing from the receptacle. (Raspberries.) 



