This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
Fig. 1263. Shrub, to 6 ft.: leaves oblong-obovate or elliptic, acuminate-serrate, sparingly pubescent above, tomentose beneath: flowers usually in 3-flowered, short-peduncled cymes, often crowded at the end of short branchlets; corolla broadly funnelform, narrowed below the middle, whitish at first, changing to carmine, slightly pubescent or nearly glabrous outside; style somewhat exserted. May, June. Japan, China. G.F. 9:405 (adapted in Fig. 1263). Gn. 21, p. 184. variety hortensis, Rehd. (D. hortensis, Sieb. & Zucc). Leaves nearly glabrous above, densely grayish tomentose beneath: cymes usually rather long-peduncled; flowers usually carmine. S.Z. 29, 30. More tender and slower-growing than the type. variety sinica, Rehd. Leaves slen-der-petioled, soft-pubescent beneath: flowers campanulate, abruptly contracted below the middle into a narrow tube, pale pink. Cent. China. variety alba, Makino (D. hortensis variety alba, Sieb. & Zucc. D. japonica variety nivea, Rehd.). Like variety hortensis but flowers white.
G.C. II. 10:80. Gn. 22, p. 185; 34, p. 352. G. 28:392.
(D. multiflora, Lem.). Shrub, to 8 ft.: leaves oblong-ovate or elliptic, acuminate, serrate, sparingly pubescent above, more densely beneath: flowers 1-3, usually sessile, mostly crowded at the end of short branchlets; corolla rather gradually narrowed toward the base, pubescent outside, brownish crimson in the bud, changing to dark or bright crimson; lobes about 5 times shorter than the tube; style exserted. May, June. Japan. S.Z. 32. I.H. 10:383- Vigorously growing shrub, with rather small but abundant flowers variety grandiflora, Rehd. (W. arborescens, Hort.). Flowers rather large, brownish crimson. variety versicolor, Rehd. (D. versicolor, Sieb. & Zucc.) Flowers greenish white at first, changing to crimson. S.Z. 33.
(Fig. 1264), may be used as a collective name for the different hybrids between D. florida, D. praecox, D. floribunda, D. japonica and D. corseensis, which are now more commonly cult, than the typical species. Some of the best and most distinct are the following, arranged according to the color of the flowers The numbers in parenthesis after the name refer to the number of the species and indicate the origin or probable origin of these hybrids:
Fig. 1264. Diervilla hybrida. ( X 1/3)
Flowers white or nearly white: Avalanche, Lemoine (5 X ?). Flowers pure white; early. Dame Blanche (6x7). Flowers large, white, slightly pinkish outside, yellowish white and bluish in bud. Gracieux, Lemoine (5 x?). Flowers white, yellow in throat, buds light salmon-pink; early. Isoline, Van Houtte (4x?). Flowers white or slightly pink outside, yellow in throat. Madame Couturier, Billiard (4x6). Flowers yellowish white changing to pink. Madame Lemoine, Billiard (4x6). Flowers white with delicate blush, changing to pink. Madame Tellier, Billiard (4x6). Flowers large, white, with delicate blush. Vestale, Lemoine (5x?). Flowers pure creamy white. Mont-blanc, Lemoine (4x7). Flowers pure white, greenish white in bud, fading to pinkish. Pavilion Blanc, Lemoine. (4 x 7). Similar to the preceding. Candida (4 X6). Flowers pure white. R.H. 1879:130.
Flowers pink or carmine: Abel Carriere (4x7). Flowers rose-carmine, purple-carmine in bud, with yellow spot in throat. Andre Thouin (4x6). Flowers pink, carmine in bud. Conquerant, Lemoine (5x?). Flowers very large, rose-colored, carmine outside and in throat; early. Conquete (4 X7). Flowers very large, deep pink. Dr. Buillard (4x7). Flowers carmine. Esperance, Lemoine (5 X?). Flowers very large, pinkish white tinged with salmon-red, buds pale salmon; early. Gratissima (4x7). Flowers light pink. Graenewegenii (4x?). Flowers red outside, whitish within, slightly striped with yellowish red. Gustave Mallet, Billiard (4x6). Flowers light pink, bordered white. Hendersonii (4x8). Flowers light crimson. Intermedia (4x7). Flowers carmine, buds darker. Othello (4 X 8). Flowers carmine, darker outside. Seduction, Lemoine (5x?). Flowers vinous carmine-red, early, very floriferous. Steltzneri, Van Houtte (4x7). Flowers dark red, abundant. Styriaca, Klenert (4x8). Flowers pink, changing to pinkish carmine, very floriferous. M.D. 1912:1. Van Houttei (4x7). Flowers carmine. F.S. 14:1447. Venosa (4x6). Flowers carmine-pink, carmine in bud, orange to crimson in throat.
Verschaffeltii (4x6). Flowers carmine-pink, limb bordered whitish.
Flowers crimson or dark crimson: Congo (6X8). Flowers large, purplish crimson, abundant. Desboisii (8x7). Flowers small, dark crimson. E.Andre (8x6). Flowers very dark, brownish purple. Eva Rathke (8x6). Flowers deep carmine-red, erect; very free-flowering. R.B. 19:126. G. 14:1350. Hendersonii (4x8). Flowers light crimson, crimson in bud. Incarnata (6x8). Flowers deep red. Lavallei (6 X8). Flowers bright crimson. H.F. 1870:5. G.W.I, p. 60 (habit). Lowei (8x4). Flowers dark purplish crimson. H.F. 1870:8. P. Duchartre (4x8). Flowers deep amaranth, very dark; free-flowering.
Leaves variously colored: Kosteriana variegata. Leaves bordered yellow: flowers pink, paler in bud, dwarf. Looymansii aurea. Leaves yellow; of slow growth. R.B. 2:173. Luteo-marginala (Weigela amabilisfol. variety Van Houtte). Leaves bordered yellow. F.S. 12:1189. Nana variegata (Weigela rosea nana fol. variety Van Houtte). Leaves variegated with white: flowers nearly white: dwarf. Sieboldii argenteo-marginata (4x7). Leaves bordered white: flowers rose.
bb. Anthers connected with each other, (Calyptrostigma.) 10. Middendorffiana, Carr. Shrub, to 3 ft.: leaves short-petioled, ovate-oblong or oblong-lanceolate, serrate, glabrous at length: flowers in 2-3-flowered axillary and terminal clusters; corolla campanulate-funnelform, yellowish white, spotted orange or purplish inside 1 1/2 in. long; calyx-teeth partially connate. May, June. E. Siberia, N. China, Japan. Gt. 6:183. R.H. 1854:261. F.S 11:1137. I.H. 4:115. G.C. III. 7:581. - Hardy, but rarely does well; it demands a cool and moist climate and a position sheltered from strong winds.
D. splendens, Carr. (D. LoniceraxD. sessilifolia). Intermediate between the parents; more similar to L. sessilifolia, but leaves short-petioled. Garden origin. - D. suavis, Komarov. Allied to D. japon-lca. Leaves ovate-lanceolate, ciliate, otherwise glabrous, sparingly serrate, 1-2 in. long: corolla white, pink outside; style not exserted. Manchuria. Recently introduced; presumably quite hardy. - D. Wagneri, Kusnezov (D. japonica X D. Middendorffiana). Leaves ovate-oblong, glabrous except on the veins below: flowers axillary on short branchlets; sepals lanceolate, distinct or partly connate, pink, tinged yellowish. Garden origin. Gt. 48:1461. - Doubtful whether still in cultivation