3036 



RUMEX 



cc. Fls. rosy, 2-6 in. long. 



macrantha, Mart. It forms a compact, many- 

 stemmed shrub, 1-6 ft. high, with ovate-lanceolate 

 Ivs. 4-6 in. long: fls. large, bell-shaped, with tubular 

 iase, purplish rose with purple veins, solitary in lf.- 

 axils. Brazil. B.M. 7872. G.C. III. 17:45; 30:467; 

 43:27. R.H. 1881:410. Gn.W. 5:341; 10:21. Gt. 61, 

 p. 534. G.W. 2, p. 297. G. W. Oliver says in his 

 "Plant Culture" that R. macrantha is of easy cult, and 

 is one of the best greenhouse flowering plants for 

 amateurs. Cuttings rooted in Sept. furnish fair-sized 

 flowering plants in Jan. These, if desired, may be planted 

 out in late spring, when they will have formed large 

 specimens, which may be lifted and potted. 



BB. Lvs. marked with white. 

 c. Fls. white, often veined with lilac. 

 Devosiana, Hort. A low-growing tender Brazilian 

 species, with lanceolate Ivs. marked on the upper sur- 

 face with white along the nerves and having the lower 



surface entirely 

 purple: fls. rather 

 small, usually 

 white with blue 

 stripe, axillary; 

 corolla -tube sud- 

 denly dilated and 

 bent at the mid- 

 dle. B.M. 8406. 



cc. Fls. carmine 



or rose. 



M a koyana, 

 Hort. A compact 

 bushy plant re- 

 sembling R. Devo- 

 siana, Hort., in 

 foliage, but differ- 

 ing in the color 

 of the fls. (bright 

 carmine) and by 

 their somewhat 

 larger size. Brazil. 

 R.B. 21:109. R. 

 H. 1896 :576. 

 Prefers shade. It 

 is said that the 

 color of the foliage 

 is-better when soot 

 is mixed with the 

 soil. 



AA. Blossoms on 

 long peduncles. 

 B. Fls. blue or 



purple. 



tuberdsa, Linn. A perennial herb, 2-3 ft. high, with 

 oval or ovate Ivs. 2-3 in. long and blue fls. 1^-2 in. 

 long, in terminal, nearly naked panicles: stigmas single: 

 caps. 12-16-seeded. S. W. U. S.; cult, in Fla. 



Lorentziana, Griseb. Glandular herb, little branched, 

 the sts. quadrangular: Ivs. decussate-opposite, chan- 

 neled below, oval, subcordate or attenuate at base, 

 acuminate: infl. terminal in a lax leafy panicle; fls. 

 long-peduncled, usually in 3's, bluish purple; sepals 

 free, linear; corolla funnelform, 5-lobed, rounded, the 

 inferior emarginate; ovary oblong: caps, cylindrical- 

 conical. Uruguay. R.H. 1902 : 136. 



BB. Fls. red. 



c. Peduncles much branched. 



amdfena, Nees (Stephanophysum longifolium, Pohl). 

 A half-hardy perennial, about 1 ^ ft. high : Ivs. oblong- 

 lanceolate or oblong, narrowed at both ends; margins 

 repand-denticulate or simply repand: fls. bright red, 

 in axillary sprays in summer. Brazil. F.M. 1880:419. 



351C. Ruellia formosa. ( X Yd 



cc. Peduncles but little branched. 

 formosa, Andr. Fig. 3510. A low-growing, tender, 

 herbaceous perennial: Ivs. ovate, rounded at the base, 

 hairy on both sides: fls. on straight, axillary peduncles; 

 corolla scarlet, showy, \Y<i in. long, the upper 2 lobes 

 joined for half their length. Summer. Brazil. B.M. 

 1400. Cult, in Calif. 



R. solitaria, Veil., is offered in the European trade, but its iden- 

 tity is doubtful, as R. solitaria, Veil., has been referred by some to 

 R. Schnaeriana, Lindau, by others to R. calvescens, Lindau. R. 

 varians, Vent., is Daedalacanthus nervosus. 



F. W. BARCLAY. 



F. TRACY HuBBARD.f 



RULINGIA (after J. Ph. Ruling, a botanist of Gottin- 

 gen). Sterculiacese. Shrubs or subshrubs with stellate 

 tomentum or hairs, useful as greenhouse plants and for the 

 rockery in warm climates, as the southern United States. 



Leaves entire, toothed or lobed; stipules narrow and 

 deciduous: fls. mostly white, small, in If .-opposed or 

 terminal, rarely axillary cymes; calyx 5-lobed; petals 5, 

 broad and concave or convolute at base, with a small, 

 broad, or linear ligula at the top; stamens 5 without 

 anthers, linear-lanceolate and alternate with the petals, 

 5 perfect and opposite the petals; ovary sessile, 5- 

 celled: fr. tomentose or beset with prickles or soft setae, 

 loculicidally valvate. About 20 species, all Australian 

 except one from Madagascar. 



A. Lvs. 1-3 in. long. 



pannosa, R. Br. Eventually a shrub, several feet 

 high, but flowering freely at a young age: Ivs. scabrous- 

 pubescent above, densely velvety hirsute below, on 

 older plants ovate-lanceolate to lanceolate, on young 

 plants broader and often 3-4-lobed: cymes shortly 

 pedunculate; fls. white. B. M. 2191. The plant 

 offered in Calif, as Pomaderris apetala is said to belong 

 here Prized by some for the fleecy coating of its Ivs. 



AAsLvs. usually less than 1 in. long. 



parviflora, Endl. A low shrub, with branches ^-1 /- 

 ft. long, ascending or prostrate: Ivs. ovate or ovate- 

 lanceolate, obtuse, deeply crenate, mostly lobed: fls. 

 pinkish, in shortly pedunculate cymes. Cult, in Calif., 

 where it is spoken of in high terms as a rock-plant on 

 account of its trailing habit and myriads of small pink 

 fls. borne in spring. F W- BARCLAY. 



F. TRACY HUBBARD.! 



RUMEX (the Latin name, of unknown origin). Poly- 

 gonacese. DOCK. SORREL. Herbs, mostly perennial with 

 strong roots, usually weedy, but some of them afford 

 leaves for "greens," and others are useful for bold effects. 



Rumex is closely allied to Fagopyrum, the buck- 

 wheats, Rheum, the rhubarbs, and Polygonum, the 

 jointweeds. The rumexes are mostly leafy-stemmed 

 plants, with small fls. in panicles, the pedicels usually in 

 whorls and jointed: fls. perfect or imperfect, with 6- 

 parted calyx (no petals), the 3 inner lobes larger and 

 generally one or afi of them bearing a grain or tubercle 

 near the center; these more or less enlarged inner calyx- 

 lobes or sepals are called "valves" in fr. ; stamens 6; 

 stigmas 3: fr. a 3-sided often margined or winged 

 achene. Species probably considerably more than 100, 

 in many parts of the world, some of them on dry land and 

 some in swamps; a few species are widespread weeds in 

 temperate climates, being among the commonest of 

 intro. plants about old buildings and in waste places. 

 They have little horticultural value. Prop, readily by 

 seeds. In the larger species the sts. are grooved and 

 hollow. Most of them are erect-growing plants. See 

 Dock and Sorrel. 



A. Docks: Ivs. not hastate: fls. perfect, or at least not truly 



dioecious (sometimes polygamo-dioecious) . 

 B. Wings of calyx bearing one or more tubercles. 

 Patientia, Linn. HERB PATIENCE. SPINAGE DOCK. 

 Tall strong erect nearly simple perennial, reaching 5 ft. 



