DIEFFENBACHIA 



DIERVILLA 



1007 



Fournieri, Hort. Vigorous: Ivs. large, leathery, with 

 spots and blotches of white on a blackish green back- 

 ground. Colombia. 



illustris, Hort. See D. latimaculata. 



imperator, Hort. Lvs. 16-18 in. long, 5-6 in. wide, 

 olive-green, fantastically blotched, marbled and 

 spotted with pale yellow and white. Colombia. 



1262. Dieffenbachia Seguine var. nobilis. 



insignis, Hort. Lvs. dark green, with irregular, 

 angular blotches of pale yellowish green, 6 or more in. 

 wide, ovate and short-acuminate in form and with 

 pale green petiole. Colombia, 



latimaculata, Lind. & Andre" (D. illustris, Hort.). 

 Lvs. glaucous-green, profusely white-barred and white- 

 spotted and blotched with yellow-green, the petioles 

 also glaucous. Brazil. I.H. 23:234. 



Jenmanii, Veitch. Lvs. rich, bright, glossy green, re- 

 lieved by a milk-white band at every lateral nerve, and 

 by a few white spots interspersed between the bands. 

 Guiana. G.Z. 28, p. 218. 



magnifica, Lind. & Rod. Lvs. ovate-acuminate, 

 large, dark green, attractively blotched and spotted 

 with white along the veins; sts. and petioles also varie- 

 gated. Venezuela. I.H. 30:482. S.H. 2, p. 383. G. 

 13:643. 



marmdrea, Hort. See D. Parlatorei. 



meleagris, L. Lind. & Rod. Lvs. with the long 

 petioles green, marked with ivory-white, the blades 

 dark green above, paler beneath, marked on both sides 

 with a few white spots. Ecuador. I.H. 39:559. 



memdria-Cfirsii. A hybrid raised in the garden of 

 the late Marquis Corsi. 



ParlatSrei, Lind. & Andre", var. marmdrea, Andre" 

 (D. memoria, D. mormdra and D. Cdrsii, Hort.). Lvs. 

 long-oblong, acuminate, the midrib white and the 

 blades blotched white, the green deep and lustrous. 

 Colombia. I.H. 24 : 291 . Engler refers this plant to the 

 genus Philodendron. 



Regina, Bull. Lvs. oblong-elliptical, rounded at base, 

 short -acuminate at apex, greenish white, profusely 

 mottled and blotched with alternate light and green 

 tints. S. Amer. G.Z. 28, p. 26. The vari-colored and 

 margined Ivs. are very attractive. 



Rex, Hort. Compact: Ivs. oblong-lanceolate, the 

 two sides not equal, deep green, but the white angular 

 blotches and midrib occupying more space than the 

 green. S. Amer. G.Z. 28, p. 97. 



Sanderae, Hort. Lvs. very broad-oval, green, mot- 

 tled with c.ream-color. 



splendens, Bull. St. faintly mottled with dark and 

 light green: Ivs. have a thick, ivory-white midrib, and 

 the ground-color is of a deep, rich, velvety bottle-green, 

 with a resplendent, lustrous surface, freely marked with 

 whitish striate blotches. Colombia. G.Z. 25, p. 193. 



triumphans, Bull. Lvs. dark green, ovate-lanceolate 

 and acuminate, 1 ft. long, irregularly marked with angu- 

 lar yellowish blotches. Colombia. J ARED Q. SMITH 



GEORGE V. NASH, t 



DIELfTRA: Dicentra. 



DIERAMA (a funnel, alluding to shape of fls.). 

 Iridacese. S. African cormous plants, related to Spar- 

 axis and Ixia. Fls. large, white to purple and red, in 

 panicled spikes: Ivs. long, linear, rigid: perianth short- 

 tubed, expanded at throat, with oblong nearly equal 

 segms.; stamens 3, inserted on the perianth throat; 

 ovary 3-celled, oblong, with many ovules, the style ex- 

 serted: fr. a 3-valved caps. There are 2 or 3 species, 

 of which D. pulcherrima, Baker, was intro. into S. 

 Calif, many years ago: scape 2-6 ft., with remote 

 branches: Ivs. narrow-sword-shaped and with a very 

 slender point: fls. \ l /% in. long, pendulous, blood-red- 

 purple, bell-shaped. B.M. 5555 (as Sparaxis pulcher- 

 rima). Requires the treatment given Ixia. 



DIERVILLA (after Diereville, a French surgeon, who 

 took D. Lonicera to Europe early in the eighteenth 

 century). Caprifoliacese. WEIGELA. Ornamental decid- 

 uous shrubs, grown for their showy flowers appearing 

 profusely in spring and early summer. 



Leaves opposite, petioled or nearly sessile, serrate: 

 fls. in 1- to several-fld. axillary cymes, often panicled 

 at the end of the branches, yellowish white, pink or 

 crimson, epigynous; calyx 5-toothed or 5-parted; corolla 

 tubular or campanulate, 5-lobed, sometimes slightly 

 2-lipped; stamens 5; style slender with large capitate 

 stigma; ovary inferior, elongated, 2-celled: fr. a slender, 

 2-valved caps, with numerous minute seeds. About 10 

 species in E. Asia and N. Amer. 



Diervillas are shrubs of spreading habit, with more or 

 less arching branches, rather large leaves, and, especially 

 the Asiatic species, with very showy flowers from pure 

 white to dark crimson, appearing in spring. A very large 

 number of hybrids between the different Asiatic species 

 have been raised and have become great favorites in 

 gardens on account of their profusely produced and 

 delicately tinted flowers. The earliest to bloom are 

 D. prsecox and its hybrids and also D. florida var. 

 venusta, which begin to flower in Massachusetts about 

 the middle of May; the latest is D. rivularis. The 

 American species are hardy North and prefer moist 

 and partly shaded positions. Of the Asiatic species 

 D. Middendorffiana is the hardiest, but rarely does well ; 

 it seems to grow best in humid sandy or peaty soil and 

 in positions sheltered from strong winds; it dislikes hot 

 and dry air; D.' florida also is rather hardy and one of 

 the handsomest species of the genus. The other Asiatic 

 species require protection during the winter or sheltered 

 positions. They thrive well in any humid garden soil. 

 Propagation is readily effected by greenwood cuttings 

 or hardwood cuttings; the American species usually by 

 suckers and by seeds sown in spring. 



alba, 4, 7. 

 amabilis, 4, 6. 

 arborea, 6. 

 arborescens, 8. 

 canadensis, 1. 

 Candida, 9. 

 corasensis, 6. 

 Desboisii, 9. 

 floribunda, 8. 

 florida, 4. 

 grand iflora, 6, 8. 

 Gratissima, 9. 

 Grcenewegenii, 9. 

 Hendersonii, 9. 

 hortensis, 7. 



INDEX. 



hybrida, 9. 

 Incarnata, 9. 

 'Intermedia, 9. 

 japonica, 7. 

 Kosteriana rariegata, ' 

 Lavallei, 9. 

 Lonicera, 1. 

 Looymansii aurea, 9. 

 Lowei, 9. 



LiUeo-marginata, 9. 

 Middendorffiana, 10. 

 multiflora, 8. 

 Nana ruriegata, 9. 

 nivea, 7. 

 pauciflora, 4. 



praecox, 5. 

 rivularis, 3. 

 rosta, 4. 

 sessilifolia, 2. 

 Sieboldii argenteo- 



marginata, 9. 

 sinica, 7. 

 Steltzneri, 9. 

 Stvriaca, 9. 

 trifida, 1. 

 Van Houttei, 9. 

 Venosa, 9. 

 venusta, 4. 

 Verschaffeltii, 9. 

 versicolor, 8. 



