RUDBECKIA 



RUELLIA 



1589 



tremely durable and seem in harmony with such sur- 

 roundings. Rudbeckias are easily increased by seeds, 

 cuttings or division. -^ q Egan. 



2216. Rubus dumetorutn. an Old World Dewberry (X 3^). Page 1587 



A. Base of tipper Ivs. cordate-clasp- 

 ing 1. amplezicaulis 



AA. Base of upper Ivs. not cordate- 

 clasping. 

 B. Color of disk brown or dark 

 purple: shape of disk never 

 cylindrical. 

 C. Lower Ivs. deeply S-cut. 



D. Duration biennial: disk 



black-purple 2. triloba 



DD. Duration perennial: disk 



dull brownish 3. subtomentosa 



CC. Lower Ivs. not deeply 3-cut. 

 D. Plants bristly -hairy. 



E. Hays 3^-/4 in. long 4. bicolor 



EE. Hays 1-2 in, long 5. hirta 



DD. Plants nearly glabrous. 



E. Lvs. mostly entire 0. fulgida 



EE. Lvs. irregularly serrate. 7. speciosa 

 BB. Color of disk greenish or yel- 

 lowish. 

 c. Lvs. entire or barely dentate. 

 D. Height 2-4 ft.: lvs. bright 



green 8. nitida 



DD. Height 4-9 ft.: lvs. glau- 

 cous 9. maxima 



CC. Lvs. {upper stem-lvs.) 3-cleft. 10. laciniata 



amplexicaulis, 1. 

 bicolor, 4. 

 fulgida, 6. 

 Golden Glow, 10. 

 hirta, 5. 



laciniata, 10. 

 maxima, 9. 

 Neivmani, 7. 

 nitida, 8. 



speciosa, 7. 

 superba, 4. 

 subtomentosa, 3, 

 triloba, 2. 



1. amplexicatilis, Vahl. Annual, 1-2 ft. high: rays 

 % in. long or more, yellow, often with a brown-purple 

 base; disk brownish, finally somewhat cylindrical. 

 Low grounds, La. and Texas. B.B. 3:418. 



2. triloba, Linn. Fig. 2217. Biennial, 2-5 ft. high, 

 bright green: lvs. thin: rays 8-10, deep yellow, base 

 sometimes orange or brown-purple : chaff awned. Moist 

 soil, N. J. to Mich., south Ga. to La. and Mo. B.B. 

 3:415. B.R. 7:525. — Blooms the first year from seed. 



3. subtomentdsa, Pursh. Perennial, 2-5 ft. high, ashy 

 gray: lvs. thick: rays 15-20, yellow, sometimes with a 

 darker base: chaff blunt. Prairies, 111. to Tex. B.B. 

 3:415. 



4. bicolor, Nutt. Annual, 1-2 ft. high: lvs. 1-2 in. 

 long: rays yellow, with a blackish purple base or all 

 yellow. Pine woods or sandy soil, Ark., Tex., and east 

 to Ga. — Var. sup6rba, Hort. Haage & Schmidt, has 

 heads 2 in. across: rays yellow above, purplish brown 

 below. Gt. 47, p. 220. S.H. 2, p. 169. 



5. hirta, Linn. Black-eyed Susan. Yellow Daisy. 

 Biennial or annual, 1-3 ft. high: lvs. 2-5 in. long: rays 

 golden yellow, sometimes orange at base. Dry and open 

 ground; common over wide range. B.B. 3:416. Gn. 

 49:1055. 



6. fulgida, Ait. Perennial, 1-2 ft. high: rays 12-14, 

 1 in. long. Dry soil. Pa. to Mo., south to La. and Tex. 

 B.M. 1996. Mn. 6:221. 



7. specidsa, Wenderoth. Perennial, 1-3 ft. high: rays 

 12-20, becoming IK in. long. Moist .soil. Pa. to Mich., 

 Ark. and Ala. G.C. II. 16:372 (heads 3-4 in. across, 

 rays more than 30, in 2 series).— ii. Newmani, Loud., 

 is generally considered a synonym of this species. 



nitida, Nutt. This and the next are southern per- 

 ennials, with lvs. entire or barely dentate: rays droop- 

 ing, pure yellow, several or numerous; disk 

 finally columnar, 1-2 in. long. Wet ground, 

 Ga. to Fla. and Tex. Gn. 47:1006. 



9. maxima, Nutt. Closely allied to B. nitida 

 and differing as indicated in the key. Moist 

 pine woods and plains. Ark., La., Tex. Gn. 

 47:1018. 



10. laciniata, Linn. Perennial, 2-7 ft. high: 

 lower stem-lvs. 3-5-parted, upper ones 3-cleft: 

 rays yellow, few or several, soon drooping ; 

 disk cylindric in fruit. Moist ground, Canada 



to Fla., west to Mont, and New Mex. G.F. 2:281. Golden 

 Glow is a full double form. Fig. 2218. Gng. 5:5, 117; 

 6:370. A.F. 12:274, 275. Gn. 50, p. 411. G.C. III. 20:339. 



R. angustifblia, Linn., is Helianthus angustifolius. — R. pin- 

 nAta, Vent., is Lepachys pinnata. — R. purpurea, Linn., is 

 Echinacea purpurea. -^^ ]yj_ 



BUE. See Buta graveolens. 



RUE ANEMONE. See Syndesmon. 



RUE, GOAT'S. Galega officinalis. 



RU£LLIA (after Jean de la Ruelle, a French botanist). 

 Acanth&cece. A genus of about 150 species of herbs or 

 shrubs, mostly American, pubescent, villous or rarely 

 glabrous: lvs. opposite, mostly en- 

 tire: fls. violet, lilac, white, red or 

 rarely yellow. The fls. are sessile 

 or nearly so in axils of lvs. or 

 bracts; they are solitary, fascicled, 

 or in spreading, paniculate cymes. 

 Bracts herbaceous, loose or im- 

 bricated, usually small and nar- 

 row, rarely oblong or 

 lanceolate. Corolla- 

 limb 5-lobed, equal, 

 or with the upper 

 lobes connate at the 

 base; stamens 4: cap- 

 sule oblong or club-shaped, 

 terete or compressed, 6-20- 

 seeded: seeds compressed. 



A. Blossoms sessile or 

 nearly so. 



B. Lvs. green. 

 c. Pis. blue, iyi-2 in. long. 



cilidsa, Pursh. A hardy 

 perennial herb, about 1)4 ft. 

 high, erect or prostrate, hir- 

 sute or pubescent: lvs. 

 hairy, ciliate, usually ob- 

 long, sessile or short-peti- 

 oled, 13^-3 in. long: fls. sol- 

 itary or clustered, axillary, 

 blue, 1/^-2 in. long. Aug., 

 Sept. In dry, light soil, N. 

 J., south and west. B.B. 3: 

 203. — Prop, by seeds or di- 

 vision. 



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



macrdntha. Mart. It forms 2217. 



a compact, many-stemmed Rudbeckia triloba (X K). 



