YARROW 



greenish yellow, conical disk that gradually lengthens 

 as the seeds mature. It blooms from July to Septem- 

 ber, and ranges from Canada to the Gulf of Mexico. 



YARROW, MILFOIL 



Achillea millefdlium 



' So named because its virtues are said to have been 

 discerned by Achilles. 



A perennial, gray-green herb, with brownish white 

 flowers in flat-topped clusters. At its best in July, when 

 its finely dissected, fern-like leaves and stiffening stalks 

 border every roadside. Naturahzed from Europe. 



Rootstock. — Horizontal, sending out runners. 



Stem. — Erect, one to two feet high, leafy, sometimes 

 hairy, branching near the summit at the flowering time. 



Leaves. — Long and narrow, deeply cut into slender 

 parts, each of which is again cut into very fine fringe. 

 Curled and feathery, clasping the stalk at frequent inter- 

 vals. Midrib hairy underneath. 



Flower-heads. — Radiate-composite, with four to six 

 small, oblong, three-toothed, usually white ray-florets 

 which surround the tiny disk of perfect, yellowish or 

 brownish disk-florets. Involucre is a small, pale-green 

 cup, made up of tiny bracts. These heads are borne in 

 many small, compact groups which are gathered into 

 one or more large, flat-topped, stiff-branched, terminal 

 clusters. The yellow centre which looks like stamens is 

 really made up of several white, tubular corollas whose 

 mouths are filled with brilliant yellow stamens. 



Pollinated by many insects. Nectar-bearing. 



Yarrow appears by the roadside in two forms: one, 

 the seedling as a bunch of bright green, marvellously 

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