222 THE NURSERY-MANUAL 



layered, but better plants are obtained by grafting. The Japanese 

 sorts are winter-worked on imported A. palmatum (A. poly- 

 morphum) stocks, either by whip- or veneer-grafting. Varieties of 

 native species are worked on common native stocks. Maples can 

 also be budded in summer, and they grow (usually with some diffi- 

 culty) from cuttings of soft and ripe wood. Seeds usually grow 

 freely if properly handled. Box elder (A. Negundo) grows readily 

 from fresh seeds. 



Achillea (Yarrow. Milfoil). Composites. 



Multiplied mostly in spring. Dividing the clumps or stools 

 is the common method. Also by seeds, root-divisions and cuttings. 



Achimenes. Gesneriacece. 



Propagated by seeds, sown with care (as the seeds are minute) in 

 well-drained pans, watered with a fine rose. Cover lightly, or not at 

 all, protect from sun, and cover with glass or thin muslin. By leaves 

 in pots as for cuttings, placing all the petiole below the surface, and 

 in bottom heat. By cuttings from any part of the stem ; insert in 

 a soil of equal parts of peat and sand, in well-drained pots, in bot- 

 tom heat ; every joint may be used, the leaves not being removed. 

 By rhizomes ; remove the scales and plant them as seeds are 

 planted. By scaly buds produced in the axils of the leaves, treated 

 as seeds. See Gesneriacece, page 318. 



Acidanthera. Iridacece. 



Propagation by seeds and by conns, usually by the latter after 

 the manner of gladiolus. 



Acocanthera. Apocynacece. 



Propagation is by cuttings taken early in the spring. 



Aconitum (Aconite. Monk's Hood. Wolf's Bane). Ranunculaceas. 

 Seeds sown as soon as ripe in a coldframe or border. Also pro- 

 pagated by division of roots in late fall or early spring. Roots are 

 very poisonous. 



Acorus. Aracece. 



Propagated readily in spring or autumn by division. See 

 Aracece, page 239. 



Acrocomia. Palmacece. 



Propagated by suckers. Seeds are not known in cultivation 

 for any species except A. sclerocarpa. See Palms, page 377. 



