becoming reflexed: corolla about 3 cm. across, the petals very broad and rounded. 

 R. largus Bailey, R. putits Bailey, R. valentuhis Bailey. 



In thickets, edge of woods, on slopes, in stream bottoms and along fencerows 

 in n.-cen. Okla. (Logan Co.) and n.-cen. Tex., Apr.; also Ark. 



8. Agrimonia L. Agrimony. Cocklebur. Harvest-lice 



Perennial herbs from stout rhizomes; leaves pinnate with crenate-serrate leaflets, 

 interspersed with smaller leaflets; stipules foliaceous; flowers yellow, small, spicate- 

 racemose; floral bracts 3-cleft; calyx tube (hypanthium) turbinate or hemispherical, 

 the throat beset with hooked bristles, indurated in fruit and enclosing 2 achenes, 

 the 5-cleft limb closed after flowering; petals 5; stamens 5 to 15; styles terminal; 

 fruit an achene. 



About 1 5 species mostly in the North Temperate Zone. 



1. Axis of inflorescence conspicuously glandular and pubescent; main leaflets 

 11 or more per leaf, lanceolate; mature fruits 5 mm. long or less 

 1. A. parviflora. 



1. Axis of inflorescence without glands, finely and densely short-pubescent; main 

 leaflets 7 or fewer per leaf, ovatish; mature fruits 6-8 mm. long 

 2. A. striata. 



1. Agrimonia parviflora Ait. 



Plant stout and tall, to 2 m. high, from long fibrous roots; stem densely and 

 divergently long-hirsute or villous; larger leaflets of middle and upper leaves 11 

 to 15, lanceolate-acuminate, sharply serrate, firm, veiny, copiously glandular- 

 dotted beneath; smaller interspersed leaflets very unequal, often 3 to 5 pairs on 

 the intervals of the hirsute rachis; axis of inflorescence glandular and finely pubes- 

 cent; fruits 4-5 mm. long, the hooked bristles borne on a horizontal flange and 

 spreading to ascending, the outer bristles strongly spreading; hypanthium tur- 

 binate, with deep rounded grooves. 



In damp thickets and meadows and in marshy areas in Okla., the n. Panhandle 

 and n.e. Tex., July-Oct.; from Fla. to Tex., n. to Conn., N. Y., Ont., O., Ind., 

 111. and Neb. 



2. Agrimonia striata Michx. 



Fibrous-rooted rhizomatous perennial 5-10 dm. tall, papillate-hirsute below, 

 both hirsute and puberulent and occasionally somewhat glandular above; leaves 

 with 5 to 13 unequal primary leaflets; leaflets strongly serrate, somewhat strigose 

 on the upper dark-green surface, glandular-pubescent on the paler lower surface, 

 the upper leaflets to about 6 cm. long; stipules to 2 cm. long; racemes 5-20 cm. 

 long; hypanthium about 3 mm. long at anthesis, subequal to the ovate-lanceolate 

 calyx lobes, accrescent in fruit to become about 5 mm. long, crowned with 3 or 

 4 rows of subterminal ascending hooked bristles nearly as long as the sepals, the 

 sides distinctly 10-furrowed and lightly strigose. 



In wet soil along creeks, in wet meadows often among willows and loamy 

 soils in conifer forests, in Okla. (Waterfall), N. M. (widespread) and Ariz. 

 (Apache to Coconino cos., s. to Cochise and Pima cos.), June-Sept.; Que. and 

 N. S. to B.C., s. to N. Y., la., Okla., N. M. and Ariz. 



9. Sanguisorba L. 



Several species in the Northern Hemisphere. 

 1. Sanguisorba minor Scop. 



Perennial from a usually branched caudex, often somewhat rhizomatous; flower- 

 ing stems generally with several scarcely reduced leaves, simple or branched above, 

 2-6 dm. tall, mostly sparsely pilose with multicellular more or less moniliform 



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