COROXILLA 



855 



1063. Cornus Kousa. 



Gn. 43:152; 60, p. 165. G.C. III. 19:783. A.G. 9:329 

 (adapted in Fig. 1068); 13:674. Gng. 3:149. J.H. III. 

 35:9; 63:187. M.D.G. 1899:328-9. R.B. 30:64. G. 

 27:367. Gn.W. 8:741. G.M. 35, suppl. Oct. 8. Fls. 

 very showy, appearing after the Ivs. in June and con- 

 trasting well with the bright 

 green foliage; hardy as far 

 north as Mass. Sometimes 

 variegated. 



22. capitata, Wall. (Ben- 

 thamia fragifera, L i n d 1 . ) . 

 Tree: Ivs. coriaceous, elliptic- 

 oblong, narrowed at both 

 ends, appressed - pubescent 

 above and more densely and 

 whitish beneath, 2-4 in.: in- 

 volucre about 2^-3 in. wide, 

 creamy white; 

 bracts ovate, 

 acute: fr. -head 

 over 1 in. across, 

 scarlet. June. 

 Himalayas. B. 

 R. 19: 1579. Gn. 

 54, p. 310; 60, p. 

 165; 64, p. 135; 

 70, p. 123; 73, p. 

 411. G.C. III. 

 16:501; 45:83; 

 48:447. J. H. 

 III. 30:213. M.D.G. 1898:568. Evergreen tree, with 

 showy fls. and frs.; hardy only S. 



AA. Plants low herbs: fls. in dense heads, with a white 

 (or pinkish) involucre. (Arctocrania, Chamseperi- 

 clymenum.) 



23. canadensis, Linn. Herb, K-% ft. high, with 

 creeping rootstock: Ivs. whorled, sessile, elliptic or 

 obovate, glabrous or nearly so, 1-3 in. long: head green- 

 ish, long-peduncled; involucre white, 1-1 Yt in. wide: 

 fr. bright red, globose. May- July. N. Amer., south to 

 Ind., Colo., and Calif. B.M. 880. G.C. III. 47:363. 

 Handsome plant for half-shady places. 



C. Arnoldiana, Rehd. (C. obliquaxC. racemosa). Intermediate 

 between the parents : last year's branches purple, older gray or gray- 

 ish brown: fls. as profusely as in C. racemosa, but the white or 

 bluish white fr. appears rather sparingly. Originated at the Arnold 

 Arboretum. S.T.S. 1 : 40. C. austr&lis, C. A. Mey. Closely allied 

 and very similar to C. snnguinea, but Ivs. beneath with appressed 

 hairs and branches less brightly colored. Asia Minor, Caucasus. 

 C. Bretschndderi, Henry (C. aspeia, Wang.) Shrub, to 12 ft.: 

 branches green or purplish: Ivs. ovate to elliptic-ovate, usually 

 rounded at the base, rough-pubescent on both sides, 2 i in. long: 

 cyme dense: fr. bluish black. N. China. Hardy. C. corynostylis, 

 Koehne=C. macrophylla. C. glabrata, Benth. Shrub, to 10 ft.: 

 branches gray: Ivs. small, nearly glabrous, green and shining on 

 both sides: fr. white. Ore. to Calif. C. Hessei, Koehne. Allied to 

 C. alba. Dwarf, dense shrub: Ivs. crowded, small, very dark green: 

 fr. bluish white. Probably from E. Asia. C. Koenigii, Schneid. 

 (C. australis var. Koenigii, Wang.). Allied to C. sanguinea. Lvs. 

 larger, 3-5 M in. long, sparingly appressed-puescent beneath. 

 Transcaucasia. C. macrophylla, Wall. (C. corynostylis, fKoehne). 

 Allied to C. brachypoda. Tree, to 30 ft.: Ivs. broadly ovate to 

 elliptic-ovate, acuminate: infl. cymose; style club-shaped at the 

 apex. Himalayas. B.M. 8261. J.H.S. 27, p. 860. Gt. 1896, p. 

 285. C. oblonga, Wall. Shrub or tree, to 30 ft.: Ivs. narrow- 

 oblong, nearly glabrous, glaucous beneath, coriaceous: fls. white, 

 fragrant, in cymose panicles. Himalayas. C. poliophylla, Schneid. 

 & Wang. Shrub, to 12 ft.: branches brown: Ivs. subcoriaceous, 

 elliptic or elliptic-ovate, slightly villous above, beneath more 

 densely so and grayish white, 2^-4^2 in. long: cymes long-pedun- 

 cled: fr. black. Cent. China. C. pubescens, Nutt. Shrub, to 15 

 ft., with purple branches: Ivs. nearly glabrous above, glaucous and 

 woolly-pubescent beneath: fr. white. Brit. Col. to Calif. C. Sld- 

 rinii, Rehd. (C. rugosa X C. stolonifera). Intermediate between the 

 parents: branches purple: Ivs. more or less woolly beneath: fr. blu- 

 ish, rarely white. Originated at Rochester, N. Y. C. mccica, I.inn. 

 (Chamsepericlymenum suecicum, Aschers. & Graebn.) Allied to 

 C. canadensis: Ivs. all opposite: fl.-head purple, the white involucre 

 1 in. or less wide. Arctic Amer., N. Eu., N. Asia. Gn. 55, p. 239. 

 S.E.B. 4:634. ALFRED REHDER. 



COROKIA (from the native name). Cornacese. Ever- 

 green shrubs, adapted to outdoor planting in the S. 

 Upright, with tortuous or straight branches and black 



bark: Ivs. alternate or fascicled, stalked, entire: fls. per- 

 fect, small, yellow, in axillary or terminal clusters; calyx- 

 tube top-shaped, the limb 5-lobed; petals 5, each with a 

 scale at base; stamens 5 : fr. an ovoid or oblong 1-2-celled 

 drupe. Three or four species in New Zeal. C. Coton caster, 

 Raoul, is offered abroad as a bush of curious growth, 

 very attractive when covered with its very small yel- 

 low star-like fls.: rigid, densely branched, 4-8 ft., the 

 branches crooked and interlaced, tomentose: Ivs. 1 in. 

 or less long, the blade orbicular to obovate or oblong- 

 ovate, obtuse or emarginate, shining above, flat 

 stalked. B.M. 8425. I.T. 2:73. L. H. B. 



CORONELLA (Latin, a little crown: from the arrange- 

 ment of the flowers). Leguminbsss. CROWN VETCH. 

 Shrubs and herbs, some grown in the hardy garden and 

 some in greenhouses, for their yellow or purple bloom. 



Annuals or perennials, often woody, smooth or rarely 

 silky-hairy, with odd-pinnate Ivs., entire Ifts., and pur- 

 ple or yellow fls. in peduncled heads or umbels; calyx 

 5-toothed; corolla papilionaceous, the standard orbic- 

 ular and the keel incurved, wings obovate or oblong; 

 stamens 9 and 1: pod jointed, terete or 4-angled; seeds 

 oblong. Species about 20, Medit. region and Canary 

 Isls.. W. Asia. The shrubby C. Emerus and C. glauca 

 are useful in S. Calif, and the southern states. The 

 species are occasionally grown in borders. C. glauca 

 is sometimes grown under glass for spring bloom, 

 after the manner of Cytisus. All are of easy cult. 



A. Fls. yellow. 

 B. Plant herbaceous. 



cappadocica, Willd. (C. iberica, Bieb.). Low peren- 

 nial herb, about 1 ft. high: Ifts. 9-11, obcordate, ciliate: 

 umbels 7-8-fld.; fls. yellow, large, July, Aug.: stipules 

 membranaceous, rounded, ciliate-toothed. Asia Minor. 

 L.B.C. 8:789. B.M. 2646. A good trailer for rock- 

 gardens and the margins of borders. 



BB. Plant shrubby, at least at base. 

 c. Claw of the petals much longer than the calyx. 



Emerus, Linn. (Emerus major, Mill.). SCORPION 

 SENNA. Fig. 1069. Dense, symmetrical shrub, 3-5 ft. 

 high, the branches 

 green and striate: 

 Ivs. deep glossy 

 green; Ifts. 5-7, 

 obovate ; stipules 

 small: peduncles 

 3-fld. ; fls. large, yel- 

 low, tipped with 

 red. Blooms freely, 

 May-July. Showy, 

 half-hardy. S. Eu. B.M. 

 445. Gng. 5:36. Ever- 

 green in southern states. 



emeroides, 'Boiss. & 

 Sprun. (C. Emerus var. 

 emeroides, Wohlf.). Bush, 

 3-6 ft.: branches gla- 

 brous or soft-hairy; Ifts. 

 2-3 pairs, heart-shaped:, 

 peduncle 2-3 times as long 

 as the If., the umbel 5-8- 

 fld.; fls. yellow; claw of 

 petals about twice as long 

 as the calyx: pod 2-3 in. 

 long, very narrow. April, 

 May. S. Eu. 



cc. Claw of petals scarcely 

 exceeding the calyx. 



juncea, Linn. Glabrous 

 gray-green shrub : branches 

 rush-like, terete, nearly 

 naked : Ifts. 3-7, linear- 1069. Coronilla Emerus. 



