206 



ACHILLEA 



ACHIMENES 



or convex, chaffy; ray fls. pistillate, fertile, the rays 

 white or pink; disk fls. perfect, fertile, 



Most of the achilleas can be grown in ordinary gar- 

 den soil, preferring open sunlight and well-drained 

 situations. Some are alpine or 

 sub-alpine and require rock- 

 garden conditions. These are 

 indicated under the individual 

 species. Dwarf kinds make 

 carpets in dry, sunny places; 

 large kinds suitable for wild 

 gardens. 



Propagation in spring by 

 division, cuttings and seeds; 

 chiefly by the first method and 

 easily accomplished. 



A. Rays about 5, except in 

 double forms, half as long 

 as the ovate-oblong invo- 

 lucre; fls. white, red, or 

 yellow. 

 B. Fls. white or red. 



103. Achillea filipendulina. 

 (Plant 



Millefolium, Linn. MILFOIL. 



YARROW. Height 1-3 ft.: Ivs. 



bipinnately parted, segms. 



linear, 3-5 cleft: fls. in flat 



corymbs. June-Oct. Eu.,Asia, 

 Amer. Common in past- 

 ures. Less commonly 

 cult, than vars. rftbrum 

 (Fig. 102) and rdseum, 

 with red or purple fls. 



BB. Fls. yellow. 

 Tournef6rtii, DC. (A. 

 xgyptlaca, Linn. ) . Height 

 12-18 in.: Ivs. pinnati- 

 sect ; segms. roundish, 

 coarsely toothed: fls. 

 pale yellow. June-Oct. 

 Greece. 



filipendulina, Lam. f . I . 

 Eupatorium, Bieb.). Fig. 

 103. Height 4-5 ft.: st. erect, furrowed, glandular 

 spotted and almost hairy: fls. yellow in dense, convex 

 compound corymbs, often 5 in. across. June-Sept. 

 Orient. Needs staking. 



holosericea, Sibth. & Sm. Similar to preceding, but 

 not glandular spotted: fls. as in A. filipendulina, but 

 corymbs simple, terminal, and the petals scarcely as 

 long as the bracts of the involucre. Mts. of Greece. 

 Summer. More suitable to semi-alpine situations 

 than A. filipendulina. 



tomentosa, Linn. A woolly, carpet-like plant for 

 rockeries. Height 8-10 in. Eu., Orient, N. Amer. B.M. 

 498. Gn. 52, p. 421. 



AA. Rays 6-20, as long as or longer than the rotund or 

 campanulate involucre', fls. white. 



B. Lvs. not divided. 



Ptarmica, Linn. (A. macrocephala, Pill. & Mitterb.). 

 SNEEZEWORT. Height 1-2 ft.: Ivs. serrate: fls. in 

 loose corymbs; all summer. North temperate regions. 

 Its full-double var. The Pearl (Fig. 104) is much used 

 for cut-flowers and in cemeteries, and is one of the most 

 popular of all hardy herbaceous plants. There are 

 many other varieties. 



lingulata, Waldst. (A. buglossis, Hort.). A stiff, sim- 

 ple-stemmed, perennial, simulating A. Ptarmica, but 

 hairy: Ivs. broadly spatulate, the petiole long-attenuate 

 and dotted: heads corymbose, the fls. numerous; 

 petals 34 times as long as the involucre. Sub-alpine. 

 Hungary and southward. Summer. 



sibirica, Ledeb. (A. mongolica, Fisch. A. Ptarmi- 

 cotdes, Maxim.). Denser than the last, more erect and 

 rigid: height lJ^-2 ft.: fls. larger and in more compact 

 corymbs. July-Sept. 



grandiflora, Bieb. A smooth and erect perennial: 

 Ivs. narrowly linear, narrower than in any of the 

 Ptarmica group, distinctly serrulate : corymbs simple or 

 sometimes loosely branched, the peduncles 4-5 times 

 longer than the head; fls. white, large and more showy 

 than most of the genus, longer than the bracts of the 

 involucre. Sub-alpine and scarcely good for ordinary 

 garden conditions. Caucasus. June, July. 



BB. Lvs. deeply divided. 



macrophylla, Linn. Height 3 ft.: Ivs. long, broad. 

 July. Alps. Gn. 52, p. 421. Better suited to shrub- 

 bery than to herbaceous border. 



Clavense, Linn, (commonly spelled A. Clavennx. 

 A. argenlea, Hort., not Lam.). Dwarf, tufted, hoary 

 alpine plant; height 10 in.: Ivs. dentate at apex; 

 segms. obtuse: fls. spring and summer. Eu. B.M. 

 1287. Gn. 52, p. 421. Thrives in sand. 



A. Agerdtum, Linn. Fls. yellow. Eu. A. ageratifblia, Benth. 

 & Hook. (Anthemis Aizoon). Tufted, woolly, silvery gray: fls. 

 white. May, June. Alps. -A. asplenifftlia, Vent. Lvs. pinnate, 

 smooth: fls. white. There is a rcd-fld. form. N. Amer. A. atrata, 

 Linn. Dwarf, tufted, aromatic: radical Ivs. petiolate; cauline Ivs. 

 pinnatisect: fls. white. Alps. A. aiirea, Lam. Fls. golden yellow, 

 the seeds stipitate: Ivs. woolly. Aug., Sept. S. Eu. = Chry- 

 santhemum achilleffifolium (which see). A. decoldrans, Schrad. 

 Lvs. undivided: fls. pale yellow. July. Eu. A. Herbardta, All. 

 Dwarf, tufted, aromatic alpine: Ivs. undivided, serrate: fls. 

 white. May, June. A. ligitstica, All. Lvs. pinnatind: fls. white. 

 Eu., Orient. A. moachdta, Jacq. Lvs. smooth, pinnately parted, 

 lobes uncut: fls. white. Eu. A. nana, Linn. Dwarf, hairy, 

 woolly, aromatic: Ivs. pinnatisect: fls. white. Spring. Eu. Used 

 in making Chartreuse. A. otlorala. Linn. Lvs. pinnatisect; lobes 

 cut: fls. white. A. pectinata, Willd. Fls. pale yellow. A. rupts- 

 tris t Huter. Lvs. %in. long, linear-spatulate, entire. S. Italy. 

 B.M. 6905. A. santolinoides. Lag. I ft.: Ivs. pinnatisect, hairy- 

 woolly: fls. white. July. Spain. A. serrata, Retz. Lvs. pinnatifid, 

 woolly: fls. white. Siberia(?). A. Siehana, Hort. Fls. golden yel- 

 low, fragrant. Asia Minor. .A- umbellala, Sibth. Very woolly 

 rock plant, 4-5 in.: Ivs. pinnatifid; lobes oblong, bluntish, entire 

 or serrate: fls. white. June. Greece. A. nmweo, Stein. Lvs. 

 pinnately parted: fls. white. June-Aug. Eu. Other trade names 

 are A. corymbttsa, A. transyltdnica and A. Huteri; none ia 

 known in hort. or botanical literature. j^ TAYLOR t 



ACHIMENES (Greek, cheimaino, to suffer from 

 cold). Including Scheeria. Gesnerdcex. Greenhouse 

 herbs, allied to gloxinias, native to tropical America, 

 grown for bloom in late spring and in summer. 



Plant upright, 

 erect, or drooping: 

 Ivs. opposite or 

 whorled, serrate or 

 toothed, mostly 

 hairy: underground 

 sts. scaly and catkin- 

 like, and simi- 

 lar growths 

 sometimes in v 

 the axils of the\ 

 Ivs: fls. axil- 

 lary; 5 calyx- 

 lobes narrow 

 and short; corolla- 

 tube cylindrical and 

 limb spreading; an- 

 thers 4, connivent in 

 the tube, and a rudi- 

 ment of a fifth sta- 

 men; style long, usu- 

 ally exserted, the stigma dilated or obscurely 2-lobed. 

 Perhaps 40 species. 



The garden achimenes are much confused by hy- 

 bridization, and it is doubtful whether any of the pure 

 species are in general cultivation in this country. Years 

 ago, the small red-flowered types (of the coccmea sec- 

 tion) were frequent, but modern evolution has proceeded 

 from the broad-flowered purple species. The species 



104. Achillea 



Ptarmica var. 



The Pearl. 



