220 CLASS XII. ORDER V. 



227. GEUM. 

 Geum rivale. L. Water Avens. 



Radical leaves lyrate; stipules ovate, acute, cut; 

 flowers nodding, awns feathery, twisted. Sm. 



A fine plant conspicuous in meadows for its high, nodding, 

 dark colored flowers. Stem round, ciect, drooping at top. 

 Radical leaves lyrate or interruptedly pinnate, the terminal 

 leafet large and lobed, the wliole serrate and hairy. Flowers 

 terminal, two or three on a stalk; calyx reddish brown, closed; 

 petals erect, hardly exceeding the calyx, inversely heart shaped, 

 veined and shaded with yellow purple. The fruit becomes erect, 

 and is crowned with long, feathery, contorted awns. — May, 

 June. — Perennial. 



Geum Virginianum. L. Virginian Avcns. 



Leaves trifoliate, upper ones lanceolate ; petals 

 shorter than the calyx ; seeds hairy, with naked awns, 

 twisted at top. 



Stem erect, one or two feet high, branching, hairy. Lower 

 leaves in threes, sometimes in fives; the upper ones simple, 

 oval, or lanceolate, the whole unequally serrate. Stipules large, 

 ovate, few toothed. Flowers nodding, fruit erect. Petals white, 

 not longer than the calyx. — Thickets. — June, July. — Perennial. 

 Geum album. Willd. White Avens 



Pubescent, leaves of the root pinnate, of the stem 

 ternate ; stipules cut; flowers erect; petals not longer 

 than the calyx. 



Stem erect, hairy, branching at top. Leaves variable, those 

 of the root and lower part of the stem pinnate, or ternate, or 

 simple, with appendages on the petiole, all of them hairy. Sti- 

 pules large, toothed, and lobed. Flowers small. Calyx acute, 

 hairy. Petals shorter than the calyx, entire, whitish. Seeds 

 hairy. Awns reflected, smooth, geniculatcd or uncinate and 

 hairy at tip. — About hedges. — July. — Perennial. 



Between this and the foregoing there are intermediate varieties. 



