

CEANOTHUS 



sangnineus, Pursh (C. Oreganus, Nutt. ). Tall shrub, 

 with purple or reddish glabrous branches: Ivs. orbicular 

 to ovate or obovate, obtuse, serrate, nearly glabrous, 

 1-3 in. long: fls. in rather long, narrow panicles, on stout, 

 leafless peduncles, axillary, from branches of the previous 

 year. May, June. Brit. Columbia to Calif. B.M. 5177. 



DD. Foliage persistent, shining above, canescent 

 beneath. 



velutinus, Dougl. Tall shrub : Ivs. broadly elliptic, 

 mostly subcordate, obtuse, serrate, dark green and gla- 

 brous above, 2-3 in. long : fls. in large, compound pani- 

 cles at the ends of the branches. June, July. Brit. 

 Columbia to Colo, and Calif. B.M. 5165. 



cc. Fls. blue, purplish or pink : Ivs. half evergreen. 



birsutus, Nutt. Shrub or small tree, with villous 

 branches: Ivs. broadly elliptic or ovate, rounded or cor- 

 date at the base, obtuse or acute, with glandular teeth, 

 villous and usually green beneath, %-2 in. long : fls. 

 deep blue to purplish, in narrow panicles, 1-2 in. long. 

 April, May. Calif.- Var. Orcutti, Trel. (C. Orcutti, Tor- 

 rey). Fls. blue, paler: fr. loosely villous. 



thyrsiflorus, Eschsch. Shrub or small tree : Ivs. ob- 

 long, obtuse, crenate-serrate, nearly glabrous, l-l^in. 

 long : fls. blue, rarely white, in narrow panicles, about 

 3 in. long. May-July. Oregon to Calif. B.R. 30:38. 

 S.S. 2 : 64. G.C. Ill, 20 : 363. A very fine, free-flowering 

 species of beautiful blue color. Probably natural hybrids 

 of this species are : C. Veitchidnus, Hook. (C. thyrsi- 

 florus xrigidus), with deep blue fls. in dense panicled 

 clusters; B.M. 5127; F.S. 13:1383, and C. Lobbianus, 

 Hook. (C. thyrsiflorusxdentatus), with deep blue fls., 

 in oval, peduncled, solitary clusters. B.M. 4810 (4811 by 

 error). F.S. 10:1016. 



CEDRELA 



265 



390. Ceanothus Americanus (X 



hybridus, Hort. Hybrids of garden origin, chiefly be- 

 tween C. Americanus or C. ovatus and C. thyrsiflorus 

 or C. azureus, mostly raised in French nurseries. Some 

 of the most distinct are : Albus-plenus, with double 

 white fls.; Atrocceruleus purpureus, fls. blue, foliage 

 purple when young ; Arnoldi, fls. sky-blue, in large 

 panicles ; Gloire de Versailles, with bright blue, large 

 panicles ; Gloire de Plantieres, fls. dark blue, in large 

 panicles ; Marie Simon, fls. flesh-colored ; Rbseus, fls. 

 pink. R.H.1875:30. 



BB. Margins of Ivs. entire or nearly so: half evergreen. 



Fendleri, Gray. Low, prostrate and spiny shrub: Ivs. 

 oval, rounded or nearly acute at both ends, entire, rarely 

 finely serrulate, grayish green, minutely tomentose be- 

 neath, K-l in. long: fls. white, in short racemes, termi- 

 nal, on short, lateral branchlets. June, July. From S. 

 Dakota to New Mexico and Arizona. A very graceful 

 and free-flowering shrub of almost creeping habit, well 

 adapted for covering dry, sandy banks ; half evergreen 

 and hardy north. 



integerrimus, Hook. & Arn. Tall, erect shrub, with gla- 

 brescent branches : Ivs. broadly elliptic or ovate, spar- 

 ingly hairy or glabrous, bright green beneath, 1-3 in. 

 long : fls. blue, sometimes white, fragrant, in 3-6-in. 

 long, narrow panicles. April-June. Washington to Calif, 

 and S. E. Arizona. 



divaricatus, Nutt. Tall, erect shrub, with usually glau- 

 cous branches and often spiny : Ivs. ovate, obtuse or 

 nearly acute, glaucous and glabrous or grayish tomen- 

 tose, %-l in. long: fls. pale blue, sometimes whitish, in 

 2-3 in. long, narrow panicles. April-June. Calif. 



AA. Lvs. opposite, persistent. 



cuneatus, Nutt. Tall, much-branched shrub: Ivs. spatu- 

 late or cuneate-obovate, mostly obtuse, entire, minutely 

 tomentose beneath, %-l in. long : fls. white, in small 

 clusters along the branches. March-May. Oregon to 

 Calif. B.H. 8: 170. 



prostratus, Benth. Procumbent shrub : Ivs. cuneate, 

 obovate or spatulate, coarsely and pungently toothed, 

 sometimes only 3-pointed at the apex, often minutely 

 silky when young, K-l in. long : fls. blue, in clusters, 

 terminal on short branchlets. Spring. Washington to 

 Calif. 



C. Africdnus, Linn.=Noltea Afrieana. C. atrocceruleus pur- 

 pureus, see C. hybridus. C. azureus, Desf. Low shrub : Ivs. 

 membranaceous, oblong, serrate, pubescent : fls. blue, in large 

 panicles. Summer. Mexico. L.B.C. 2:110. B.R. 4: 291. P.M. 

 2:74. Under this name a hybrid of this species with C. Ameri- 

 canus is often cultivated. C. bicolor, HBK.= C. azureus. C. 

 cceruleus, Lag.= C. azureus. C. dentdtus, Torr. & Gray. Low 

 shrub : Ivs. oblong, penninerved, dentate, glandular-papillate 

 above, loosely hairy : fls. blue, in peduncled clusters. Calif. 

 F.S. 6:567, 2. B.H. 3:101. C. dentdtus, var. floribundus. Trel. 

 (C. floribundus, Hook.). Fl. -clusters numerous, nearly sessile: 

 Ivs. smaller. B.M. 4806. F.S. 10:977. I.H. 7:238. B.H. 5:129. 

 C. folibsus, Parry. Low shrub : Ivs. small, broadly elliptic, 

 glandular-toothed, slightly hairy, pale or glaucous beneath: fls. 

 deep blue, in numerous small clusters. Calif. C. intermedius, 

 Pursh=C. Americanus, var. intermedius. C. Icevigdtus, Dougl. 

 Tall shrub: Ivs. broadly elliptic, serrate, glabrous, glaucous be- 

 neath: fls. yellowish white, in large panicles. Calif. C. Lobbi- 

 dnus, Hook., see C. thyrsiflorus. C. microphyllus , Michx. Low 

 shrub: Ivs. very small, obovate or elliptic, nearly glabrous: fls. 

 white, in small, short -peduncled clusters. Florida. C. Ore- 

 gdnus, Nutt.= C. sanguineus. C. Orcutti, Parry = C. hirsutus, 

 var. Orcutti. C. papilldsus, Torr. & Gray. Low shrub : Ivs. 

 narrow-oblong, dentate, glandular-papillate above, villous be- 

 neath : fls. deep blue, in peduncled, axillary oblong clusters. 

 Calif. B.M. 4815. F.S. 6:567, 1. P.F.G. 1. p. 74. R.H. 1850:321. 

 C. Pdrryi, Trel. Large shrub: Ivs. elliptic or ovate, denticulate, 

 cobwebby beneath : fls. deep blue, in peduncled, narrow panicles. 

 Calif. C. rigidus, Nutt. Rigid, much-branched shrub : Ivs. 

 opposite, cuneate-obovate, denticulate, usually glabrous, small: 

 fls. blue, in small, nearly sessile, axillary clusters. Calif. B.M. 

 4660 (as C. verrucosus) and 4664. C. Veitchidnus, Hook., see 

 C. thyrsiflorus. C. verrucosus, Nutt. Low shrub: Ivs. mostly 

 alternate, roundish obovate, emarginate, denticulate, nearly- 

 glabrous, small: fls. white, in small, axillary clusters along the 

 branches. Calif. C. verrucbsus, Hook. C. rigidus. 



ALFRED REHDER. 



CEDRELA (from Cedrus, the wood resembling that 

 of Cedrus). Meliacece. Tall trees, with alternate, usu- 

 ally abruptly pinnate Ivs., without stipules ; Ifts. peti- 

 oled, entire or slightly serrate : fls. inconspicuous, whit- 

 ish, usually perf ect, 5-merous, in large, pendulous, termi- 

 nal panicles ; the 5 petals forming a tube with spreading 

 limb : fr. a capsule, dehiscent, with 5 teeth, with many 

 flat, winged seeds. Eight species in trop. Amer. and 8, 

 forming the subgenus Toona, in E. India and Australia. 

 Tall, ornamental trees, and well adapted for avenues ; 

 only hardy in S. Calif, and in the Gulf states, except 

 C. Sinensis. The wood of some species is known as 

 cedar wood, and much valued for making furniture and 

 boxes. They thrive best in rich loam, and are prop, by 

 seeds or by cuttings of mature wood, and, also, by root- 

 cuttings, all with bottom heat. 



