104 ELEMENTS OF BOTANY. 



leaflets oval or oblong, serrate toward the apex, entire below ; flowers 

 yellow, solitary, on long axillary peduncles ; petals oval, a little longer 

 than the sepals ; style terminal. June- August. In dry meadows. 



VIII. GEUM. 



Perennial herbs ; leaves pinnately divided ; flowers solitary 

 or in cymose clusters ; calyx persistent, 5-bracted, 5-lobed ; 

 petals 5 ; stamens and achenes numerous ; styles long, straight 

 and smooth, or jointed and hairy. 



G. Canadense Jacq. AVhite Avens. Stem erect, branching 

 above, smooth or finely pubescent, 18-24 in. high ; radical leaves 

 pinnate, or the earliest simple and rounded, long-petioled, serrate or 

 dentate, terminal lobe larger than the lateral lobes ; stem leaves 

 short-petioled, 2-5-lobed or parted ; flowers on slender peduncles ; 

 petals white, not longer than the sepals ; styles jointed near the 

 middle, the lower portion persistent and hooked ; ovaries and recep- 

 tacle hairy, head of fruit globose. April-May. Rich woods. 



IX. AGRIMOWIA. 



Perennial herbs ; stem erect ; leaves unequally pinnate, 

 stipules leafy ; flowers small, yellow, in spicate racemes ; 

 calyx tube obconic, 5-cleft, covered with hooked bristles ; 

 petals 5, small ; stamens 5-15 ; achenes 2, included in the 

 calyx tube, fruit drooping. 



A, PARViFLORA Sol. Agrimony. Stem branched, hirsute, 3-6 

 ft. high; leaves very numerous; leaflets 9-15, about 1 in. long, 

 lanceolate or oblong, serrate, roughish above, pubescent below, glan- 

 dular ; small leaf-segments often alternating with the leaflets ; flowers 

 numerous, in long spike-like racemes, small, yellow ; mature fruit 

 reflexed, glandular-bristly. July- August. On dry ground. 



X. ROSA. 



Shrubs ; stems erect, sometimes climbing, armed with 

 prickles ; leaves pinnately compound, stipules adnate to the 

 petioles ; calyx 5-cleft, the tube urn-shaped, becoming fleshy 

 in fruit; petals 5, spreading; stamens and pistils numerous, 

 carpels many, usually pubescent, inserted on the receptacle 

 which covers the inner side of the calyx tube ; achenes bony. 



