CHRYSANTHEMUM 



AA. Lvs. not cut to the midrib :' the primary incisions 



CHRYSANTHEMUM 



313 



B. Fls. borne in flat-topped clusters. 

 12. Balsamita, Willd. (Tanacetnm Balsamita, 

 Tall and stout : Ivs. sweet-scented, oval or oblonir. ol>- 



465. Chrysanthemum lacustre. 



tuse, margined with blunt or sharp teeth, lower ones 

 petioled, upper ones almost sessile, the largest Ivs. 5-11 

 in. long, l%-2 in. wide. W. Asia. Typically with short 

 white rays, but when they are absent the plant is var. 

 tanacetoides, Boiss. COSTMARY. MINT GERANIUM. Fig. 

 464. Also erroneously known as lavender. This has es- 

 caped in a few places from old gardens. 



BB. Fls. borne singly on the branches or stems. 

 c. Plants annual : foliage glaucous : rays golden 

 yellow. 



13. segetum, Linn. CORN MARIGOLD. Annual, 1-l^ft. 

 high : Ivs. sparse, clasping, very variable, incisions 

 coarse or fine, deep or shallow, but usually only coarsely 

 serrate, with few and distant teeth. June-Aug. Eu., 

 N. Afr., W. Asia. Gn. 18, p. 195. R.H. 1895, pp.448, 

 449. Var. grandiflorum, Hort., is a larger-fld. form of 

 this weed, which is common in the English grain fields. 

 The var. Cloth of Gold, J.H. III. 12:445, is probably the 

 oest. This species is much less popular than P. carina- 

 tum and coronarium. It is also forced to a slight extent 

 for winter bloom. " Segetum" means " of the corn fields." 



14. multicaule, Desf. Glabrous and glaucous annual, 

 6-12 in. high : stems numerous, simple or branched, 

 stout, terete : Ivs. fleshy, variable, usually linear - 

 spatulate, 1-3 in. long and %-% in. broad, very coarsely 

 toothed or lobed, sometimes shorter, with few narrow- 

 linear, acute, entire segments about 1 line broad : rays 

 much shorter and rounder than in No. 13. Algeria. 

 B.M. 6930. Rarer in cult, than No. 13. Said to be use- 

 less as a cut-flower. 



cc. Plants perennial : foliage not glaucous (except in 



wild forms of No. 20). 

 D. Rays always white: lls. never double: practically 



never cult, under glass. 



15. lacustre, Brot. (C. latifblium, DC.). Fig. 465. 

 This is endlessly confused with C. maximum in gar- 

 dens, and the two species are very variable and difficult 

 to distinguish. The fls. cannot be told apart. C. lacustre 

 is a taller and much more vigorous plant, and some- 

 times it is branched at the top, bearing 3 fls., while C. 

 maximum is always 1-fld. Height 3-6 ft. : stem sparsely 

 branched : Ivs. partly clasping, ovate-lanceolate, with 

 coarse, hard teeth: fls. not distinguishable from No. 16: 

 rays about 1 in. long ; pappus of the ray 2-3-eared. 

 Portugal, along rivers, swamps and lakes. R.H. 1857, 

 p. 456. -According to R. Irwin Lynch, in Gn. 26, p. 441, 

 C. lacustre has coriaceous; oval Ivs. about 3 times as 



long as broad, while in C. maximum the Ivs. are 5 times 

 as long as broad. H. Cannell, Swanley, Eng., says that 

 C. lacustre is 2 ft. high and blooms 3 weeks before C. 

 inn. rim um. With Woolson, Passaic, N. J., it grows 4-5 

 ft. high. The rays in Fig. 465 are rather shorter than 

 usual. 



16. maximum, Ramond. Fig. 466. This species has 

 narrower Ivs. than No. 15, and they are narrowed at the 

 base. Height 1 ft. : stem more angled than the above, 

 simple or branched at the very base, always 1-fld. and 

 leafless for 3-4 in. below the fl. : lower Ivs. petioled, 

 wedge-shaped at the base, lanceolate, dentate from the 

 middle to the apex; stem-lvs. sessile, wide- or narrow - 

 hmceolate, typically serrate throughout their whole 

 length, but variable, as in Fig. 466 : pappus none : in- 

 volucral scales narrower and longer, whitish-transpa- 

 rent at the margin, while those of C. lacustre are 

 broader, more rounded at the apex, and with a light 

 brown, scarious margin. Pyrenees. For other pictures 

 of these two species, see J.H. III. 5:25, and Gn. 26, p. 437. 

 Var. filif6rmis,*Hort., "with long, narrow, thread-like 

 petals." Int. 1899. Var. Triumph has "fls. 4 in. across, 

 with broad, overlapping petals." 



17. uligindsum, Pers.(P. uligindsum,Waldst.). GIANT 

 DAISY. Stout, erect bush, 4-5 ft. high, with light green 

 foliage: stem nearly glabrous, striate, branching above, 

 rather deeply serrate, roughish : fls. 2-3 in. across. 

 Hungary. B.M. 2706. A.F. 4: 523 and 8: 813. Gng. 2:375- 

 and5:183. A.G.19:403. R.H. 1894, p. 82. Gt. 46, p. 103. 

 G. C. II. 10: 493. Gn. 26, p. 442 and 38, p. 523. -Next to C. 

 coccineum, this is the most popular of the hardy herba- 

 ceous kinds. In A.F. 4:465 Wm. Falconer shows a 2- 

 year-old plant 6 ft. high, 17 ft. in circumferen'ce at a 

 point 4 ft. from the ground, and carrying thousands of 

 flowers. It blooms the first year from seed or division, 

 and has been forced for Easter somewhat as Hydrangea 

 paniculata can be treated. Excellent for cut-fls. The 



466. Chrysanthemum maximum. 



blossoms should be cut soon after opening, as the disks 

 darken with age. The plant needs a rich, moist soil, 

 and deserves a greater popularity. "Uliginosum 

 "inhabiting swampy places." 



