ACHILLE A ACONITUM. 



43 



in dense, convex, compound co- 

 rymbs of many heads. Leaves, pin- 

 nate, pubescent, somewhat rough. 

 A variety, A. Eupatorium, has bright 

 yellow flowers in broad flat corymbs. 

 Native of the eastern parts of the 



Caucasus. Mixed borders and in 



groups of the most showy herbaceous 

 plants, in ordinary soil. It is quite 

 strong enough to be well able to take 

 care of itself in woods and semi-wild 

 spots. Division and seed. 



Achillea Millefolium (Common Yar- 

 row). A native herb, attaining a 

 height of from 1 to 3 ft. in garden soil. 

 Flowers, in summer; white or pink, in 

 numerous small ovoid heads. Leaves, 

 strap -shaped in outline, finely divided 

 into very narrow segments. Europe, 



Asia, and America. The fine 



rose-coloured variety is the only one 

 worth cultivation, and it is useful as a 

 border plant, growing freely in any 

 kind of soil. Division at any season. 



Achillea Ptarmica (Sneezewort). 

 Ptarmica vulgaris. A well known 

 British plant, 1 to 2 ft. high. Flowers, 

 in summer; white, in terminal corymbs, 

 flower-heads not numerous. Leaves, 

 strap -shaped, regularly toothed. The 

 double variety, A. Ptormicafl.pl., is a 



very handsome border plant. In 



ordinary soil. It is very useful for 

 cutting where white flowers are much 

 in demand. Division. 



Achillea serrata (Serrate-leaved 

 Achillea). A handsome plant, with 

 an erect simple stem nearly 2 ft. high. 

 Flowers, in summer ; large, white, 

 numerous, in small corymbose clusters 

 forming a somewhat spreading ter- 

 minal panicle. Leaves, sessile, par- 

 tially clasping, ascending, lance- 

 shaped, with the margins deeply 

 serrated: the double kind only is 

 worthy of culture. European Alps. 



Borders, margins of shrubberies, 



and naturalization in any soil. Divi- 

 sion. 



Achillea tomentosa (Woolly Yar- 

 row). A handsome and showy moun- 

 tain herb, 6 to 12 in. high. Flowers, all 

 summer ; bright yellow, in repeatedly 

 compound corymbs. Calyx smooth, 

 rather shining. Leaves, woolly, bipin- 

 natifid; segments crowded, linear, 

 acute. Europe. Rockwork, mar- 

 gins of borders or on bare banks, in 

 ordinary soil. Easily increased by 

 division. 



Achillea umbellata (Dwarf Silvery 

 Yarrow). Ptarmica umbellata (Sibth.) 

 A very neat, silvery berb, 4 in. or 

 6 in. high. Flowers, in June ; white, 

 about the size of those of A. Ptarmica, 

 6 or 8 in a simple umbel. Scales of 

 involucrum membranous, with a green 

 line through the middle and a blackish 

 margin, inner scales largest. Leaves, 

 clearly and regularly lobed, small, 

 chiefly about the lower part of the 

 stem; divisions obovate, entire, co- 

 vered, as are the stem and pedicels, 

 with very short, fine, whitish wool. 

 Said to be allied to A. Clavennce. 



Mountains of Greece. Edgings, 



tufts on rockwork, or margins of 

 mixed borders, in ordinary sandy 

 garden soil. Division or cuttings. 



Acis autumnalis (Autumnal Acis). 

 Leucojum autumnale. A pretty little 

 autumn-flowering bulb, 3 to 4 in. high. 

 Flowers, white, delicate pink at the 

 base, 2 to 3 on a stem, appearing be- 

 fore the leaves. Leaves few, very 

 slender, sheathing the stems at the 

 base, sometimes not appearing till 

 spring. Bulb thick for the size of thf 

 plant, covered with a whitish mem- 

 brane. Southern Europe. Hock- 

 work or raised borders, always in 

 a warm, well-drained, and carefully 

 shaded position, and in very sandy 

 soil. Increased by division every 

 second or third year. 



Aconitum autumnale (Autumn Monks- 

 hood). Afinespecies, about 3|ft. high. 

 Flowers, from August to November ; 



