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.
(Latinized Arabic name). Compositae. Leopard's Bane. Hardy herbaceous plants, 1-2 feet high, with yellow many-flowered heads.
Stems little branched or not at all: leaves alternate, radical ones long-stalked, stem - leaves distant, often clasping the stem: heads mostly one on a stem and 2-3 in. across, borne high above the basal crown of foliage, from April to June. - From 20-30 species, natives of Eu. and Temp. Asia. The genus is allied to Arnica and distinguished by the alternate leaves and by the style.
The plants are of easy culture in rich loam except D. cordifolium, which is an alpine species. The flowers are numerous and good for cutting. Doronicums have been strongly recommended for forcing.
A. Root-leaves not notched at the base, ovate.
Linn. Glabrous, but woolly at the neck, with long, silky hairs: root-leaves ovate or oval, wavy-toothed; stem - leaves nearly entire, the lower ones narrowed into a petiole and not eared, the upper ones sessile, oblong, acuminate: rhizome tuberous, roundish, or creeping obliquely: stalk of the root-leaves about 3 in. long: typically about 2 ft. high. Sandy woods of Eu. G.C. III. 17:229. J.H. III. 55:109. Gn. 60:151. variety excelsum, Hort. (D. excelsum, Hort. D. "Harpur Crew," Hort.), is more robust, grows about 5 ft. high and is probably more cult, than any other kind of doronicum. Flowers sometimes 4 in. across. Gn. 47, p. 269; 28:512; 38:437. G.C. II. 20:297. G. 19:441; 27:225. Gn. W. 24:221.
Clusii, Tausch. (Arnica Clusii, All.) Leaves ovate or oblong; stem - leaves half clasping, with distant teeth or many small ones. One subvariety has long, silky hairs on its leaves, while another has none. Swiss and Austrian Alps. - "Soft, downy foliage," J. W. Manning. "Grows 2 ft. high," Woolson. "Larger and later flowers than D. caucasicum," Ellwanger and Barry.
aa. Root-leaves notched at the base, heart-shaped. b. Root tuberous.
Pardaliancb.es, Linn. Hairy: leaves toothed; lower stem - leaves eared at the base of the stalk, subovate, upper ones spatulate-cordate, highest ones cordate-clasping, acute. Woods of lower mountains of Eu. G. 22:499. - While all species are typically 1-flowered, any of them may have now and then more than 1 flower on a stem, and this species particularly may have 1-5 flowers
bb. Root not tuberous.
Bieb. Glabrous except as noted above: leaves crenate-dentate, lower stem - leaves eared at the base of the stalk, the blade subcordate, highest ones cordate to half-clasping; leaves near the infloresence linear-lanceolate. Shady woods of Caucasus, Sicily, etc. B.M. 3143. Gn. 28 p. 512., which shows stems with 1 flower and 1 If. - Flowers 2 in. across.
Sternb. (D. Columme, Tenore). Glabrous, the stem very fibrous toward the base, scarcely 5 in. tall: radical leaves cordate-kidney-shaped, the upper leaves stem - clasping: heads solitary on the stems, the small leaves near it ovate-lanceolate, acuminate. An alpine species from S. E. Eu. and adjacent Asia.
Jacq. A trifle hairy: leaves minutely toothed, lower stem - leaves spatulate-ovate, abruptly narrowed at the base, half-clasping, highest ones cordate-clasping, lanceolate. Subalpine woods, Eu.
D. draytonense, Hort., is a list name, not referable to any known species. It seems not to occur in horticultural or botanical literature. - D. magnificum, Hort., described as a "very attractive perennial with large yellow flowers somewhat like a single sunflower," is also doubtful. It may be D. plantagineum variety excelsum.
Wilhelm Miller. N. Taylor.†