ERIGERON 



ERINACEA 



1133 



A. F Is. orange. 



1. aurantiacus, Regel. More or less velvety: height 9 

 in.: Ivs. oval-oblong, clasping at the base, more or less 

 twisted: heads 1 on a st.; involucral scales loose, 

 reflexed. July, Aug. Turkestan. R.H. 1882:78. Gn. 

 52, p. 485. G. 5:239. J.H. III. 52:303. Perhaps the 

 showiest of the genus. Sold as "double-orange daisy." 



AA. Fls. creamy or white. 



B. Lvs. linear. 



2. ochroleucus, Nutt. Height 9-18 in.: sts. mostly 

 not branched: Ivs. rather rigid: rays 40-60, white or 

 purplish, never yellow. Gravelly hills and plains N. 

 Wyo. and Mont, to Utah. This and the next are rare 

 kinds in cult., sometimes sold by collectors and dealers 

 in native plants. 



BB. Lvs. broader, lanceolate to ovate, or obovate. 



3. Howellii, Gray. Height about 1 ft.: root-lvs. 

 obovate; st.-lvs. ovate, half -clasping, all thin: rays 

 30-35, 1-2 lines wide, white. Mountain meadows, Cas- 

 cade Mts., Ore. and Mont. 



4. mucronatus, DC. (Vittadinia trttoba, Hort., not 

 DC.) Lvs. lanceolate, narrowed at base, ciliate, mostly 

 entire, often with a long, callous mucro. Mex. This 

 plant, grown in Calif., is a much-branched perennial 

 with variable sometimes lobed Ivs., and the white rays 

 purple on the back. G.C. III. 48:203. 



5. Coftlteri, Porter. A slender equally leafy perennial 

 about 15 in. high: Ivs. thin, obovate or oblong, almost 

 mucronate, and usually soft-hairy: fls. solitary on each 

 stalk, sometimes 2 or 3 together, the white rays about 

 1 in. long. July. Rocky Mts. G.C. III. 30:99. Gn.W. 

 3, p. 587; 16: 440. 



AAA. Fls. rosy violet or purple. 



B. Rays 100 or more, mostly narrow: Ivs. entire. 



c. Fl.-heads large. 



D. Involucre hairy. 



E. Height about 2 ft. : sts. several-fld. 



6. specidsus, DC. (Stendctis speciosa, Lindl.). 

 Height 13^-2 ft., the st. more or less woody: hairs few, 

 loose: st. very leafy at top: root-lvs. more or less spatu- 

 late; st.-lvs. lanceolate, acute, half -clasping. Brit. 

 Col. to Ore. near the coast. B.M. 3606. B.R. 1577. 

 Gn. 52:484. G. 21:15. Var. superbus, Hort., sold 

 abroad, has lighter colored and more numerous fls. 

 Gn. 75, p. 118. G. 31:81. Var. major, Hort., has 

 broader rays and brighter colors. Var. rdseus, Hort. 

 Ray-florets lilac; disk-florets yellow. Var. grandifldrus, 

 Hort. Fls. larger and deeper in color than in var. 

 superbus. 



EE. Height 9-15 in. or less: sts. usually 1-fld. 



7. glaucus, Ker-Gawl. BEACH ASTER. Lvs. slightly 

 glaucous or often green in cult. ; root-lvs. rarely 2-3- 

 toothed: rays not narrow, light lavender-blue. Pacific 

 coast, where it flowers most of the year. B.R. 10. 

 Gn. 52, p. 484. Var. semperfldrens, Hort. A dwarf 

 floriferous form. 



8. alpinus, Lam. (E.Rbylei,~Rort.1). A dwarf species 

 suitable for rockwork: sts. hairy, bearing a single 

 head of purplish fls.: Ivs. acute, lanceolate, sometimes 

 ciliate but otherwise entire. Northern regions. L.B.C. 

 6:590. Suitable chiefly for alpine gardens. 



DD. Involucre not hairy. 



9. macrfinthus, Nutt. Height 10-20 in. : hairs numer- 

 ous and long or short, sometimes nearly absent: lys. 

 lanceolate to ovate: rays very numerous, at least %in. 

 long. Rocky Mts., Wyo. to New Mex. and S. W. Utah. 

 Gn. 52, p. 484. G.C. III. 46:53. A good species. 

 Blooms later than the eastern species. Violet. Hardy. 

 Can be used with good effect in mass plantings of 

 autumn-flowering asters and goldenrods. 



cc. Fl.-heads (or disk) small. 



10. glabellus, Nutt. (E. dsper, Nutt.). Height 6-20 

 in., the st. simple or a little branched above: root-lvs. 

 spatulate; st.-lvs. lanceolate, gradually narrowing into 

 bracts: involucre bristly, or at least pubescent; rays 

 violet-purple or white, very narrow. Minn, to Rockies. 

 Gn. 52, p. 485. B.M. 2923. B.B. 3:385. L.B.C. 

 17:1631. Much cult, abroad. Var. arizfinicus, Hort. 

 A variety from Ariz. 



BB. Rays 70 or less, wider: Ivs. entire or toothed. 



c. Lvs. almost or quite entire. 

 D. Sts. with several fls. in a corymb. 



11. Villarsii, Bell. Root biennial: height 1 ft.: Ivs. 

 with 3 or 5 nerves, roughish: fls. corymbose. Eu. 

 B.R. 583. L.B.C. 14:1390. Not cult., but in I.H. 

 43, p. 301, said to be a parent with E. aurantiacus of E. 

 hybridus rbseus, Hort., Haage & Schmidt. This is said 

 to resemble E. Villarsii in habit, and E. aurantiacus in 

 form of fls. but not in color. Said to bloom freely from 

 May to autumn. 



12. philadelphicus, Linn. Perennial by offsets: a 

 roughish, much-branched herb with spatulate or obo- 

 vate Ivs. often st.-clasping along the upper part of the 

 st.: heads several, corymbose, the numerous purplish 

 white rays being attractive in June. N. Amer. Almost 

 a weed and easily grown in any ordinary garden. 



DD. Sts. mostly 1-fld. 



13. salsugindsus, Gray. Height 12-20 in. : upper st.- 

 lvs. with a characteristic mucro: rays broad, giving an 

 aster-like effect, purple or violet; the slightly viscid 

 character of the involucre is particularly designative. 

 Wet ground, on higher mountains, Alaska to Calif, and 

 New Mex. C.L.A. 21. No. 11:40. 



cc. Lvs. coarsely toothed above the middle. 



14. bellidifdlius, Muhl. (E. pulchellus, Michx.). 

 POOR ROBIN'S PLANTAIN. Makes new rosettes by 

 offsets from underground sts.: height 2 ft.: root-lvs. 

 wider above the middle than in most species; st.-lvs. 

 fewer: fls. spring, clear blue, on long sts. Damp bor- 

 ders of woods. Canada to 111. and La. B.M. 2402. 

 B.B. 3: 388. Weedy. 



E. cseruleus, Hort.=(?). E. divtrgens, Torr. & Gray. Diffusely 

 branched with pubescent Ivs. and white or purple fl.-heads. W. U. 

 S. E. flagellAris, Gray. A spreading plant bearing a profusion 

 of white or pale lilac fl.-heads. W. U. S. E. grandifdlius elatior, 

 Hort. "Large solitary fls. with purple disk. June and July."=(?). 

 E. leiom&rus. Gray. Lvs. small, linear: solitary fl.-heads with 

 violet rays and a yellow disk. Colo. B.M. 7743. E. multiradidtus, 

 Benth. & Hook f. Fl.-heads terminal, solitary; ray-florets purplish; 

 disk yellow; height 6 in. to 2 ft. Himalayas. B.M. 6530. E. neo- 



mexicAnus, Gray. Fl.-heads loosely panicled; ray -florets linear, 

 white; disk - florets tubular, yellow. New Mex. E. purpureum. 

 Hort., according to H. A. Dreer, "rarely exceeds 10 in. height, and 



has medium-sized fls. of soft, rosy purple, borne in graceful, spread- 

 ing panicles." Form of E. macranthus (?). E. trifidus, Schlecht. 

 Fl.-heads white or pale lilac, daisy-like. Rocky Mts. E. uniflorus, 

 Linn. Involucre hirsute, lunate, occasionally becoming naked ; rays 

 purple or sometimes white. Arctic regions. 



WILHELM MILLER. 



N. TAYLOR.f 



ERINACEA (Latin, erinaceus, hedgehog, allud- 

 ing to the spiny nature of the plant). Leguminbsx. 

 A low almost leafless shrub forming dense spiny tufts 

 covered in spring with numerous blue flowers. 



Deciduous, very spiny : Ivs. simple or ternate, pubes- 

 cent, only present at the end of young branchlets: 

 fls. 1-3, axillary toward the end of the branchlets; 

 calyx tubular, with 5 short teeth, inflated after flower- 

 ing; petals narrow, long-clawed, claws of the wings and 

 keel adnate to the staminal tube; standard ovate, 

 slightly auriculate at the base; stamens connate: pod 

 oblong, glandular-hairy, 2-valved, 4-6-seeded. One 

 species in S. W. Eu. Not hardy N.; likes limestone soil 

 and a sunny position, best adapted to be planted in 

 rockeries. Prop, by seeds. 



pungens, Boiss. (AnthyUis Erindcea, Linn.). Shrub, 

 to 1 ft. : Ifts. 1-3, oblong-obovate or spatulate, M~^i n - 



