752 



CHOKE-CHERRY 



CHROZOPHORA 



CHOKE-CHERRY: Prunus demissa (West) and P. virginiana 

 (East). 



CHONDROBOLLEA (compounded from Chpndrorhyncha and 

 BolleaJ. A genus established to contain hybrids between these 

 genera. See also Bolleo-Chondrorhyncha. 



CHONDROPETALUM : hybrids of Chondrorhyncha and 

 Zygopetalum; see those genera. 



CHONDRORHYNCHA (cartilage and beak) . Orchidd- 

 cese. Three species of S. American epiphytal orchids, 

 practically unknown in the American trade. Cult, 

 as for Odontoglossum crispum. They are short-stemmed 

 herbs without pseudobulbs, and oblong, plicate, peti- 

 oled Ivs., the simple scape bearing a single large, odd, 

 yellowish fl. C. Chestertonii, Reichb. f. (O.K. 11:305; 

 16:57), C. fimbriata, Reichb. f., and C. rbsea, Lindl., 

 are the species. Keep cool and moist. A garden hybrid 

 is reported between C. Chestertonii and Zygopetalum 

 Mackayi under the name of Chondropetalum Fletcheri. 

 O.R. 1908, 56, f. 8. GEORGE V. NASH. 



CHORISIA (Ludwig Choris, born 1795, artist of 

 Kotzebue's expedition). Bombacdcese. Spiny trees of 

 S. Amer. (3 species), one of which is somewhat cult. 

 Lvs. alternate, digitate, of 5-7 entire or serrate Ifts. : fls. 

 large, with 5 linear or oblong petals, the peduncles 

 axillary or racemose; staminal tube double, the outer 

 one short and with sterile anthers; ovary 5-loculed 

 and many-ovuled: fr. a pear-shaped caps, with many 

 silky seeds. C. specidsa, St. Hil., of Brazil, the "floss 

 silk tree," is cult, in S. Calif., and is adapted to warm 

 glasshouses. It is a medium-sized tree, allied to Ceiba 

 and Bombax. Lfts. lanceolate, acuminate, dentate: 

 calyx irregular, shining outside, but silky inside; petals 

 obtuse, yellowish and brown-striped at the base, 

 pubescent on the back. The soft silk or cotton of the 

 seed-pods is used for pillows and cushions. L. jj. g 



CHORIZEMA (fanciful Greek name). Sometimes 

 spelled Chorozema. Leguminbsse. Evergreen coolhouse 

 small shrubs grown for the showy pea-like yellow 

 orange and red, usually racemose flowers; spring- and 

 summer-blooming. 



Woody plants of diffuse or half-climbing habit, with 

 thick and shining simple often spiny-toothed Ivs. and 

 pea-like red or yellow fls. : calyx-lobes 5, the 2 upper ones 

 mostly broader; petals clawed, the standard very broad, 

 keel short; stamens not united: pod short, not con- 

 stricted. About 15 species, in Austral., 3 of which 



925. Chorizema ilicifolium. ( X Ji) 



appear to be chiefly concerned in the garden forms. 

 Handsome plants for the cool greenhouse, less popular 

 in this country than abroad. When not grown too soft, 

 they will stand slight frost at times. Grown in the open 

 in S. Calif, and S. Fla. They are grown in a rather 

 peaty soil, after the manner of azaleas, and usually 

 rested in the open in summer. They are excellent for 

 training on pillars and rafters. 



Chorizemas are among the most attractive spring- 

 flowering plants, and they are not difficult to grow. 

 Cuttings should be secured in March from medium- 

 ripened wood and may be either potted singly in small 

 pots, or several placed together in larger pots. The 



former method has the advantage, because when 

 cuttings are well rooted in the small pots, they may be 

 shifted along without so much disturbance to the roots. 

 The cuttings root readily in a mixture of two parts 

 sharp sand and one of peat, sifted through a fine sieve. 

 They should be placed in a tight case or covered with a 

 bell-glass in a temperature of 58 to 60 by night. A 

 rise of 10 in the day will be sufficient. The inclosure 

 that protects them from drafts should be opened a 

 few minutes now and then to change the air. For 

 potting chorizemas in the early stages, equal parts of 

 good peat and sharp sand is about right. When a 

 5- or 6-inch pot is reached, much less sand should be 

 used, just enough to give the earth a gritty feeling and 

 the peat may be in a rather rough state, just small 

 enough to be conveniently used in potting. The potting 

 should be firm, as loose potting is bad for all kinds of 

 hardwood plants. Keep the plants shaded from the sun 

 during the hot months, and use the syringe freely. 

 Also pinching must be attended to from their early 

 stages to insure a good bushy plant. It is best not to 

 stop the plants after August, as they will begin then 

 to set buds. A plant in a 5- or 6-inch pot may be 

 grown the first year if properly attended to. The 

 plants should be wintered in a night temperature of 

 40 with a rise of 10 or 15 during the day. The 

 second summer, and from that on as long as the 

 plants are kept, they do better if plunged in a bed 

 of clean coal-ashes out-of-doors, provided there is no 

 danger from frost; by so doing, a much shorter-jointed 

 growth will be the result. Plants well established in 

 their pots may be fed with liquid manure until they set 

 buds. A 3-inch potful of cow- or horse-urine to two 

 and one half or three gallons of water, will be sufficient, 

 and for a change a handful of soft-coal soot to the same 

 amount of water; but always water twice with clean 

 water between applications. Brown scale sometimes 

 gets a foothold on chorizemas and it may be eradicated 

 by fumigation with cyanide of potassium. Red-spider 

 may be kept down with the syringe. (George F. 

 Stewart.) 



varium, Benth. (C. elegans, Hort.). The common 

 cult, species, in several forms: erect, 4-6 ft., pubescent 

 on under side of Ivs. and on branches: Ivs. cordate- 

 ovate, undulate and prickly-toothed, 2 in. or less long: 

 fls. in many pubescent racemes; standard light orange, 

 wings and keel handsome purple-red. B.R. 25:49. 

 Garden forms are C. Chdndleri, with yellow-red stand- 

 ard, and blood-red wings, the fls. large and numerous; 

 and such names as grandiflorum, macrophyllum, lati- 

 folium, floribundum, multiflorum. C. Lowii, Hort., 

 is a form of this species, with larger and brighter- 

 colored fls. 



cordatum, Lindl. (C. superbum, Lem.). Tall slen- 

 der glabrous shrub (7-10 ft.), with weak branches: Ivs. 

 cordate-ovate to ovate-lanceolate, 2 in. or less long, 

 small-toothed and more or less prickly: fls. many; 

 standard scarlet-red, wings and keel purple-red. B.R. 

 24:10. I.H. :29. Var. rotundifolium, Hort., has 

 roundish Ivs. Var. splendens, Hort., is offered. 



ilicifdlium, Labill. Fig. 925. Low and diffuse, weak, 

 glabrous, the branches slender and erect or drooping: 

 Ivs. ovate to lanceolate, 1 in. long, often cordate at 

 base, thick, coarsely veined, strongly undulate and 

 with prickly teeth or lobes: fls. in few-fld. loose racemes, 

 orange-red in spring and summer. B.M. 1032 (as C. 

 nanum). B.R. 1513 (as C. triangulare) . L H. B. 



CHRISTMAS FLOWER: Euphorbia pulcherrima. 

 CHROSPERMA: Zygadenus. 



CHROZOPHORA (Greek, color-bearing, on account 

 of their use). Euphorbiacese . Dye-yielding herbs. Lvs. 

 alternate, stellate hairy: fls. monrecious; staminate 

 calyx 5-parted, valvate; petals free; styles biparted; 



