ROSA 



ROSE 



20'. 9 



lar-serrate: fls. usually solitary. Calif. R. styldsa, Desv. (R. 

 systyla. Bastard) (6). Shrub with long arching prickly branches: 

 lfts.~5-7, ovate-oblong, pubescent beneath, ?i'-2 in. long: fls. few, 

 white or light pink, 1 \*-2 in. across: styles connate into an exserted 

 column. W. Eu. Red. Ros. (1:5, 2). W.R. 14. ft. Sweffinzfaeii, 

 Koehne (8). Shrub with large compressed prickles: Ifts. usually 9, 

 ovate to ovate-oblong, doubly serrate, pubescent beneath, 



, 



in. long: fls. 1-3, pink, 1?{ in. across; sepals nearly entire ^pedicels 

 and receptacles glandular-hispid: fr. oblong, 1 in. long. W. China. 

 M.D. 1910, p. 96. R. syttyla, Bastard=R. stylosa. R. tomenidsa, 

 Smith (6). Allied to R. villosa. Sts. slender, often arching: prickles 

 often slightly curved: Ifts. smaller, grayish green: fls. pale rose, on 

 longer pedicels: fr. smaller, with the sepals upright spreading, 

 caducous at maturity. Eu. W.R. 139. Gn. 77, p. 511. R. trachy- 

 phylla, Rau=R- JundzilliL R. Vdrbergii, Graebn. (R. fcetidaX 

 R. spinosissima). Shrub, to 3 ft,: Ivs. similar to those of R. foe- 

 tida: fls. white with a delicate flushing of yellow, 2 in. across, 

 early. Garden origin. Gn. 79, p. 323 (as R. Vorbegii). R. Wtb- 

 biana, WalL (8). Erect shrub, with prickly sts.: Ifts. 5-9, very 

 small, orbicular or oblong, usually glabrous: fls. mostly solitary, 

 pink, large: fr. ovoid. Himalayas to Afghanistan and Turkestan. 

 W.R'. 76. R. WiUmottiana, LeVeill6=R. longicuspis. R.xdnthina, 

 Lindl. (10). Upright shrub, to 10 ft. with brown branches: prickles 

 straight, stout: Ifts. 7-11, oval or elliptic, obtuse, dentate, pubes- 

 cent beneath, or sometimes glabrous, not glandular, J$-?iin. long: 

 fls. solitary, short-stalked, yellow, double, 1 * in. across. N". China, 

 Korea. Var. normtUis, Rehd. & Wilson, is the single-fld. wild form. 

 R. xdnthina, Auth.=R. Eca. ALFRED REHDER. 



ROSCHERIA (name unexplained). Palmacex, tribe 

 Areceae. A genus of one species, a palm from the Sey- 

 chelles, allied to Hyophorbe. 



Slender, erect, spiny at the nodes: Ivs. terminal, long- 

 petioled, at first 2-fid, later unequally pinna tisect ; 

 segms. numerous, linear-lanceolate, 2-fid at the apex, 

 the numerous nerves scaly beneath; petiole spineless, 

 somewhat 3-sided, concave above; sheath long, prickly: 

 spadix 2-6 ft. long: peduncle long, slender, compressed; 

 branches slender, rather simple, divaricate: spathes 

 many, entire, narrowed, compressed, naked, the 2 lower 

 ones persistent, the upper deciduous: fls. pale: fr. fusi- 

 form, small, black. Roscheria is little known in Amer. and 

 may not now be in the trade. Cult in warmhouse with 

 plenty of moisture. Prop, by imported seeds, obtainable 

 only rarely. Of little general horticultural importance.but 

 the plant is likely to be seen in choice amateur collections. 



melanochaetes, Wendl. (Verschaffetiia meUinochades, 

 Wendl.). Trunk 15-25 ft. high, 2-3 in. diam., with 

 many aerial roots, and when young with a ring of spines 

 below each If.-scar: Ivs. 4, 1 -j-7 ft. long; petiole lJ^-2}^ 

 ft. long, smooth, with a pale band running from the top 

 of the sheath down the back of the petiole; sheath 

 1 ! 2-2 } 2 ft. long, with a few fine black spines; If .-blade 

 pale green, 3^5 ft. long, 2-3 ft. broad, entire when young, 

 unequally pinnate; segms. 1-1} -2 ft. long, 2-fid at the 

 apex, clothed beneath with peltate scales. Seychelles. 

 I. H. 18:54. JARED G. SMITH. 



N. TATLOR-t 



ROSCOEA (named after Wm. Roscoe, 1753-1831). 

 Zingiberacese. Half-hardy perennial herbs often grown 

 in the warmhouse, but also used for border planting. 



Roots thick, fleshy, and fascicled: Ivs. lanceolate or 

 oblong: inn. in terminal spikes; bracts persistent, 1-fld.; 

 fls. purple, blue, or yellow; calyx long, tubular, slit down 

 one side; corolla-tube slender, lateral segms. spreading, 

 upper broad, cucullate, erect; lateral staminoides 

 oblanceolate. petaloid, erect, lip large, cuneate, deflexed, 

 2-cleft or emarginate; ovary 3-celled: caps, cylindric 

 or clavate. About 15 species, Himalaya region and 

 China. Monographed by Schumann in Engler's Pflan- 

 zenreich, hft. 20 (vol. IV: 46). Roscoeas thrive in light 

 turfy loam and are prop, by division. R. purpurea is 

 the species best known in cultivation. 



alpina, Royle. About 4-6 in. high: Ivs. 3-4 in. 

 long, not fully developed at flowering-time, sessile, 

 oblong-lanceolate: spike sessile, 1-2-fld., calyx-tube 

 green, 1 in. or more long, slit nearly to base; corolla- 

 tube white, 1 in. long; limb dark purple, the upper 

 segm. orbicular; staminoid oblong-spatula te, lip deeply 

 2-cleft. Himalayas and Burma. 



cautleoides, Gagnep; also spelled caullioides. About 

 9-12 in. high: roots fleshy, almost tuberous, Ivs. remind- 



190 



ing one of an iris and springing from the base: scapes 

 6-7-fld.; fls. pale primrose-yellow, borne singly in the 

 axils of sheathing bracts. China. G. 36:669. Gn. 77, 

 p. 275; 78:159. The roots should be planted 4-5 in. 

 below the surface in sandy loam. 



purpurea, Smith. Fig. 3460. About 6-12 in. high: 

 sts. with 5-6 sessile, lanceolate Ivs. : fls. few, in a sessile 

 spike; calyx green, 1J^ in. long, slit deeply down one 

 side as the fl. expands; corolla-tube rather dilated 

 upward; limb purple, rarely pale lilac or white, upper 



3460. Rosccea purpurea. 



segm. about 1 in., very cucullate, lower lanceolate, 

 decurved; staminoid oblanceolate-unguiculate: caps. 

 cylindric. Himalayas, Assam, and Burma. B.M. 

 4630. B.R. 26:61. L.B.C. 15:1404. G.C. III. 8:191. 

 Gn. 78:159. G.W. 14, p. 370. J.F. 3:230. A variable 

 species, the hardiest of the genus. Var. sflckimensis, 

 Hort. (R. sikkimensis, Hort.), is said to differ from the 

 type in being epiphytic, in its roots and sts., and its 

 more numerous fls. which are a different shade of 

 purple. Himalayas. Gn. 78:159. 



F. TRACY HUBBARD. 



ROSE (see also Rosa). The queen of flowers; woody 

 plants, some of them distinctly shrubby, many forms 

 much developed horticulturally, all grown for the beau- 

 tiful and mostly fragrant flowers in white, yellow, and 

 shades of red. See also Rosa. 



It been been said that the garden rose does not 

 thrive in North America as it does in Europe; but how- 

 ever true this may have been, it scarcely holds today. 

 The success of the rose in this country is very largely 

 a question of the selection of adaptable varieties. These 

 varieties are mostly the compounds of various types 

 and species. In most garden roses it is now impossible 

 to trace the original species with accuracy. For horti- 

 cultural purposes, a purely botanical classification is of 

 minor consequence, although, in the main, the leading 

 garden-groups follow old specific lines. For a garden 

 classification that follows botanical lines closely, see 

 Baker in Gardener's Chronicle, II. 24, p. 199 (1885). It 

 is essential to success, however, that the intending rose- 

 grower have a clear understanding of the mam horti- 

 cultural groups and the kinds of varieties in them, and 

 this information is provided in Barren's article, begin- 

 ning on page 3001. 



