AN ENCYCLOPEDIA OF HORTICULTURE. 



487 



Doronicnm continued. 



., variegated with a white border to the midrib and lower 

 half of the principal vein*. Receptacle round, irregularly lobed. 

 purple beneath. Stems about 6in. high, leafy. RioJaneiro, 1872. 

 (Ref. B. 303.) 



>. -""i-*- (spotted). L deep green, blotched with white, cub- 

 radical, springing from a creeping rhizome, long-stalked, cordate 

 at the base, hastate ; margin crenate-dentate ; receptacle quad- 

 rate, green. Mexico, 1863. (L H. 362.) 



>. Mannii (Mann's).* Jt., receptacle on the stem at the tears of 

 old leave.; peduncle* Srbiculir.Tbout lin. in diameter, green, 



with ten to ifteen 



green, pale beneath, obscurely a 

 ntire, glabrous, but opaque on both 



receptacle 



elliptic or obovate, acute, narroweu 



cordate base, dark 



Steml.in.'to Join* high, terete, rather flexuons, erect 

 swollen at the scars of the fallen leaves, densely 

 A. 1ft West tropical Africa, 1863. A very singular plant 

 (B. M. 5908.) 



D. tnbicina (Periza-flowered). f. numerous ; scape* about 

 equal in length with the petioles, terminated by a Peziza, or 

 wine-glass-shaped receptacle, whose margin is incurved and 

 crenated with granulated scales ; anthers purplish, two-lobed. 

 August L slightly pubescent, cordate-oblong, denticulate at 

 the margin, reticulato-venose, petiolated ; petiole about as long 

 as the leaf. Root large in proportion to the size of the plant, 

 woody, sub-fusiform, descending, truncated or pnemorse, power- 

 fully aromatic. A. 3in. Trinidad, 1817. A very rare and curious 

 plant (B. M. 2804.) 



DORYANTMES (from dory, a spear, and anthot, a 

 flower ; the flower-stem is from 12ft. to 20ft. high, like 



FIG. 677. FLOWERING BRANCHKS OF DOKO.MCUM CADCASICUM. 



D. caucasicnm (Caucasian).* Jl.-htads yellow, nearly 2in. across, 

 solitary, terminal, axillary. Spring, i., cauline ones ovate, 

 pointed, with a broad clasping base, margins toothed ; radical 

 ones renifonn, margins deeply toothed. A. 1ft Europe, Asia. 

 See Fig. 677. (B. M. 3143.) 



D. Columnw (Columna's). JL-headt yellow, large. Spring. L 

 toothed, pubescent ; radical ones stalked, almost kidney-shaped ; 

 lower cauline ones auricled ; middle ones cordate-spathulat ; 

 r ones ovate-lanceolate, amplexicauL A. 1ft to ljft Europe, 



upper 

 1824. 



D. Pardalianchea.* Great Leopard's Bane. JL-headt yellow, 

 generally three to five on each stem. Spring. L cordate. 

 toothed ; radical ones on long stalks, cordate ; stem ones few, 

 ovate ; upper ones sessile, amplexicauL A. Hft. to 3ft. Europe. 

 This species is reputed to be poisonous. (Sy. En. B. 762.) 

 D. plantagineum (Plantain), fl.-headt yellow, usually solitary, 

 and terminal. Spring. I. toothed ; lower ones stalked, ovate, or 

 slightly cordate ; the rest sessile, except the lowest, which has 

 a winged stalk, and half embraces the stem. A. 2ft 

 to 3ft Western Europe (Britain). (Sy. En. B. 762.) 

 D. p. excelanm (tall).* fl.-heads yellow, as in the type, 

 but larger. Sin. to 4in. in diameter ; ray achenes gla- 

 brous, without pappus. March to October. L, radical 

 ones on long reticles, rather roughly hairy ; stem ones 

 amplexicaul, broadly cordate-ovate, acute, coarsely 

 toothed. Stem stout, sparsely hispid, furrowed , simple, 

 or with one or two branches, h. 5ft or more. A very 

 elegant plant, more robust than the type. (O. C. n. a., 

 xx. 297.) 



DORSAL. On the back; or growing on the 

 back. 



DORSTENIA (named after Theodore Dorsten, 

 a German botanist, born 1492, died 1552). OBD. 

 Urticacece. Very curious plants, of neat compact 

 habit, and easily cultivated in a moderately damp 

 stove. The flowers are on a flattened leaf-like 

 receptacle, and are green and inconspicuous. Some of the 

 species have elegantly cut leaves; whilst those of others 

 are decorated with silver markings. Increased by di- 

 visions, made before active growth commences; or by 

 seeds, sown on a hotbed, about March or April. 



1. elliptic, or oblong-lanceolate, 3in. to 



on7,"da7k v ir^nat the margin*, and having a broad -- 



(silvery). 



-t green at 



central band, which is irregul 



, 



ly extended towards the margin < 

 It is of erect habit, with a downy 



the leaf. South Brazil, 1869. 

 purplish stem. (B. M. 5795.) 



D. Bowmanni (Bowmann's). 1. lanceolate. Sin. to Sin. long, lin 

 liin. broadTtcute, obscurely toothed, bright green and smooth 



*'1G. 078. DORT 



