CENTAUREA 



CENTRANTHUS 



713 



in. high: Ivs. decurrent, the young ones silvery white, 

 oval-lance-shaped: involucre of 4 or 5 rows of scales, 

 black-ciliate along the margins: fls. blue, the marginal 

 ones 1 in. long; disk-fls. very short, becoming purple. 

 Eu. B.M.77. G.M. 47:243. Var. alba, Hort. Fls. white. 

 G. 25: 71; 29: 109. G.M. 51:162. Var. r6sea, Hort. Fls. 

 rose-colored. Var. citrina, DC. (var. sul- 

 phurea, Hort.). Disk-fls. brown, rays yel- 

 low. Armenia. B.M. 1175 (asC.ochroleuca). 



cc. Sts. erect, simple or branched. 



15. dealbata, Willd. Perennial: sts. 

 sub-erect, 8-24 in. high: Ivs. white- villous 

 beneath, glabrous above, the lower ones 

 1-1 Yt ft. long, petioled, pinnate, the pbo- 

 vate lobes coarsely cut-toothed or auricled 

 at the base; st.-lvs. sessile, pinnate, with 

 oblong-lance lobes: fl.-head solitary, just 

 above the uppermost If.; fls. red, those of 

 the disk rosy or white; outer scales of the 

 involucre with lanceolate tips, the middle 

 rounded, deeply fringed, ciliate. Asia 

 Minor, Persia. J.H. III. 46:515. 



16. nervdsa, Willd. A 

 stout perennial about 2- 

 iy<i ft. tall with a simple 

 unbranched rough st.: 

 lower Ivs. glandular, usu- 

 ally slightly toothed, the 

 st.-lvs. clasping by the 

 auriculate base; heads 

 solitary, the rays deep 

 purple. A branched and 

 numerous -fld. form is 

 known in the wild but not 

 to the trade. Cent. Eu. 

 July., Aug. 



17. atropurpftrea, 

 Waldst. & Kit. (C. calo- 

 cephala, Willd.). Peren- 

 nial: sts. erect, branched, 

 about 2-3 ft. high, the 

 branches white-woolly at 

 the summit : Ivs. bipinnate, 



lobes linear-lanceolate, acuminate; lowest Ivs. petioled, 

 uppermost pinnatifid: fl. -heads without bracts; invol- 

 ucral scales with fringed ciliate white lanceolate tips, 

 the innermost ones rounded, scarious-margiaed; fls. 

 black-purple. Hungary. 



18. babylonica, Linn. Silvery white perennial: sts. 

 simple, stout, erect, 6-10 or 12 ft. high: Ivs. long, coria- 

 ceous, strongly decurrent on the st., the radical lyrate, 

 the lower st.-lvs. oval or oblong-acute, entire or undu- 

 late, the upper lance-acute: fls. yellow, the globular 

 heads almost sessile in the axils of narrow bract-like 

 Ivs.; one^third to half of the st. fl. -bearing; involucre- 

 scales with a short, recurved tip. Asia Minor, Syria. 

 Gn. 2, p. 73; 8, p. 263. R.H. 1859, pp. 540-1. Tall, 

 stout and striking plant. 



C. alpina, Linn. Lvs. downy beneath, prickly: fl.-heads yellow; 

 scales of involucre ovate, obtuse: hardy herb, 3 ft., from Eu., 

 sometimes seen in collections. C. eri6phora, Linn. A low plant 

 with a spiny ^alyx and silvery Ivs., is cult, in England. Not known 

 in Amer. C. pulcherrima, Willd. GEtheopappus pulcherrimus, 

 Hort.). A stout hardy perennial about 2 1 A ft. with brilliant rose 

 fls. is known in the trade. C. rigidifdlia, Hort. Stout perennial, 

 2^2 ft., with crimson heads is apparently C. orientalis, Linn. Not 

 much known in U. S. j^ TAYLOR t 



CENTAURfDIUM: Xanthisma. 

 CENTAUR Y: Sabatia. 



CENTRADENIA (Greek for spurred gland, alluding 

 to the anther glands). Melastomacese. Tropical herbs 

 or sub-shrubs grown in warmhouses for their showy- 

 colored leaves and pretty flowers. 



Branches angled or winged: Ivs. petiolate, opposite, 



872. Centaurea moschata. 

 (XM) 



lanceolate or ovate, entire, ribbed: fls. with 4-lobed 

 calyx, 4 petals, 8 stamens, and a 4-loculed ovary, pink 

 or white, in axillary or terminal clusters. Species 4-6, 

 in Mex. and Cent. Amer. They fall into 2 groups, 

 those with very unequal stamens, and C, floribunda with 

 nearly equal stamens. 



Centradenias are very showy and desirable plants. 

 The stems are often colored. They like rich leaf -mold 

 with sharp sand, and brisk heat. Give a light but 

 shady position. Strong plants are much benefited by 

 liquid manure, and such applications give better colors 

 in both flowers and fruit. 



grandifdlia, Endl. Branches 4-winged: Ivs. ovate- 

 lanceolate, strongly 3-nerved, brilliant red beneath, 

 long-pointed and curving at the end: cymes many-fld., 

 shorter than the Ivs., the fls. light rose, rotate, the petals 

 very obtuse, the stamens unequal. Mex. B. M. 5228. 

 The plant grows 2 ft. high, and blooms in winter. Very 

 showy, and the species usually cult. The cut branches 

 hold their color a long time, making the plant useful 

 for decorations. 



inaequilateralis, Don (C. rosea, Lindl.). Lvs. ovate- 

 lanceolate, unequal-sided, entire, ciliate, reddish be- 

 neath: fls. pink, in terminal corymbose racemes: dwarf. 

 Mex. B.R. 29:20. 



ovata, Klotzsch. Lvs. ovate-acute, smooth and shin- 

 ing, pale beneath, 3-nerved: fls. pink in large terminal 

 clusters. Cent. Amer. 



floribunda, Planch. Branches obscurely angled, pu- 

 bescent, red: Ivs. narrow-lanceolate, tapering below, 3- 

 nerved, red-nerved below: fls. pink, in terminal pani- 

 cles. Mex. F.S. 5:453. L. jj. B.f 



CENTRANTHUS (Greek, spurred flower) . Valerian- 

 acese. CENTRANTH. Annual and perennial herbs, one 

 of which is frequent in old gardens. 



Leaves opposite, entire, dentate, or pinnatisect: fls. 

 in dense clusters, small, red or white, terminating the 

 branches; calyx cut into 5-15 narrow divisions, en- 

 larging after flowering; corolla slender-tubed, 5-parted, 

 spurred at the base; stamen 1; fls. with a pappus-like 

 crest. About a dozen species in the Medit. region, 

 some of them sometimes half shrubby. C. ruber, the 

 common garden species, sometimes escapes and becomes 

 more or less spontaneous. 



rftber, DC. RED VALERIAN. JUPITER'S BEARD. Per- 

 ennial, 1-3 ft., smooth and glaucous, forming a com- 

 pact and floriferous bushy plant: Ivs. ovate to lanceo- 

 late, some of them toothed at base but mostly entire: 

 fls. numerous, deep crimson to pale red, fragrant. Eu., E. 

 A very handsome old 

 garden plant, too much 

 neglected; blooms all 

 summer; excellent for 

 cutting. Increased by 

 division; also by seeds. 

 There is a white-fld. 

 form (var. dlbus). 



angustifdlius, DC. 

 Perennial, glaucous, to 

 2 ft., simple or some- 

 what branched : Ivs. 

 linear -lanceolate or 

 linear, very entire, 

 nearly perfoliate: fls. 

 clear rose, fragrant. S. 

 Eu. There is a white- 

 fld. form (var. albus). 



macrosiphon, Boiss. 

 Annual, of easy cult, 

 in any good soil: 1-2 

 ft. : Ivs. ovate, glaucous, 

 toothed : fls. larger 

 than in the last, deep 873. Centaurea americana. 



