332 



The Dictionary of Gardening, 



Ztubus — continued. 



iiiciseil, serrated, the lateral ones distant from the terminal 

 one, often deeply two-lobed. Stem erect, 6ft. to 10ft. hich, 

 unarmed or with deciduous prickles. North America, 1827. 

 (li. R. 1124 ; L. li. C. 1602.) 



R. strlgosus (hairy). American Wild Red Raspberry, fl. white, 

 KUKill ; petals erect, as long as the sepals. June and .July. 

 /■/• li"lit red, lieniispherical, ripening all summer, " tenderer than 

 'the garden or European Raspberry " (Asa Gray). I. , leaflets three 

 to five, oblong ovate, acute, cut-serrated, whitish-downy beneath, 

 the lateral ones sessile. Stems biennial and woody, prickly, up- 

 right, h. 3ft. North America. 



R. triflorns (three-flowered). Dwarf Raspberry, fl. white, small ; 

 sepals and jietals often six or seven, the latter erect; peduncle one 

 to three-flr.werfd. June. fr. of few separate grains. /. three (or 

 iiedately five) foliolate ; leaflets rlidiiliic "vate or ovate-lanceolate, 

 ac\ite at both ends, coarsely and d.)ubly serrated, thin, smooth. 

 Stems ascending, 6ft. to 12ft. high, or trailing, not prickly. North 

 America. (H. F. B. A. i. 62.) 



R. viUosus (hairy). American High Blackberry, fi. white, 

 racemose, numerous ; sepals much shorter than the obovate- 

 nblong petals. May and June. .fr. blackish, large, ripening in 

 August and September, i., leaflets three (or pedately five), ovate, 

 acute unequally serrated, the terminal ones somewhat cordate, 

 conspicuously stalked. Steins upright or reclining, armed with 

 stout, curved prickles, h. 1ft. to 6ft. North America, 1777. 



RUCKIA (of Regel). A synonym of Rhodostachys 



(which see). 



RXTDBUCEIA (named in honour of Olaf Eudboc, 

 Profe.ssor of Botany at Upsal). Cone Flower. Including 

 Centrorarpha, Dracopis, Helichroa, Lepachys, Obeliscaria 

 and Ratihuld. Ord. Compositco. A genus comprising 

 about twenty-five species of greenhouse or hardy, slightly 

 branched, perennial herbs, natives of North America. 

 Flower-heads purplish, violet, or pale (sometimes with 



Fig. 397. Upper Poution of Stem of Rudbeckia pinnat,v. 



the ray, and rarely the disk, yellow), large or mediocre, 

 solitary or few, on long peduncles ; involucre hemi- 

 spherical, the bracts in two, three, or four series ; re- 

 ceptiicle much elevated, conical or columnar ; ray florets 

 ligulate, spreading, often elongated, entire or with two 

 or three short teeth at the apex ; achenes glabrous. 

 Leaves alternate or rarely opposite, entire, toothed, in- 

 cised, or pinna'iscct. The under-mentioned species are 



Rndbeckia — contimied. 

 all hardy, and will thrive in any ordinary garden soil. 

 Increased by divisions, or by seeds. K. ma.cima and 

 R. specidsa are two of the most attractive of hardy 

 perennials for mixed borders and massing. 



Fig. 398. Uppkr Portion of Ste.m of Rudbeckia plupuuea. 



R. columnaris (columnar). H.-hcacfa, ray florets yellow, or some- 

 times yellowish-red, elongated, dependent, liidentate at apex. 

 Septeinl)er. t. pinnatisect ; segments linear-lanceolate, acute, 

 entire, the terminal one almost equalling the rest, h, 3ft. 1811. 

 (B. M. 1601.) 

 R. fUlgida (brilliant). Jl. -heath, ray florets orange-yellow, about 

 twelve, equalling or exceeding the involucre ; disk dark purple, 

 the ell iff nearly smooth. July. /. spathulate-oblong or lanceo- 

 late, partly steni-cLasping, triple-nerved, the upper ones entire, 

 mostly obtuse. A. 1ft. to 3ft. 1760. Plant hairy. (B. M. 1996.) 

 R. grandiflora (large-flowered).* Ji.-hcads, ray florets yellow 

 2in. long, dependent ; disk dark purple, convex. September. 

 I. petiolate, acute, attenuated at base, reticulate-veined ; lower 

 ones ovate, crenate-toothed ; upper ones lanceolate, very scabrous, 

 obsoletely crenate. Stem angular, branched. A. 3)tft. 1830. 

 (S. B. F. (i. ser. ii. 87, under name of Centrocarpha </randiJlora.) 

 R. Mrta (hairy). Ji.-hcads large, solitary ; ray florets yellow, about 

 fourteen, more or less exceeding the involucre ; disk dull brown, 

 the chaff hairy at the tip. June to August. I. nearly entire ; 

 upper ones oblong or lanceolate, sessile ; lower ones spathulate, 

 triple-nerved, sessile. Stems simple or branched near the base, 

 1ft. to 2ft. high. 1714. Plant very rough and bristly-hairy. 

 (S. B. F. U. 82.) 

 R. maxima (greatest).* tl.-hfads solitary, on long peduncles ; i-ay 

 florets i>ure yellow, 2in. long, drooping ; disk columnar, elongated. 

 August. I. large, membranous, oval or oblong, slightly toothed or 

 entire, feather-veined, the lower ones petiolate, the upper ones 

 clasj)ing ; lowest ones Sin. to 12in. long. .Stem 4ft. to 9ft. high. 

 A handsome plant. 

 R. Newmanii (Newman's). A synonym of li. upecioifa. 

 R. pallida (pale). This is the correct name of the pLant described 



ill this wi.irk as Echinacea anfjustifolia. 

 R. plnnata (pinnate-leaved).* fi.-fu;ads, ray florets light yellow, 

 large and drooping, much longer than the oblong disk ; receptacle 

 exlialini; a pleasant, anisate odour when bruised. July. I. alter- 

 nate, pinnate ; leaflets three to seven, lanceolate, acute, h. 3ft. 



