404 ORDER LXV1II. COMPOSITE. 



ers in terminal umbels. Seed striate ; pappus bristly. — Yellow. If. 

 June — July. Mountains. 2 — 3 feet. 



3. S. obova'tus, (Muni.) Stem simple, glabrous. Radical leaves ob- 

 ovate, or Dearly orbicular, crenate, with an attenuated base; cauline 

 Leaves much smaller, sessile, pinnatifid, tomentose at the base. Flowers 

 in terminal panicles; involucre many-Laved, glabrous ; ray florets 10 

 — 12, those of the disk numerous. Seed striate ; pappus pilose. — Yel- 

 low. U- June — July. Middle Carolina. 12 — 18 inches. 



4. S. tomento'sus, (Mich.) Stem tomentose or woolly. Radical leaves 

 oblong, oval, serrulate, on long petioles ; cauline ones oval-lanceolate, 

 more or less divided. Flowers in terminal umbels ; involucre many- 

 leaved, tomentose at the base ; ray florets 12 — 15, nerved, slightly 3- 

 toothed ; pappus setaceous. — White. If. April — May. Middle Car- 

 olina. 2 — 3 feet. 



5. S. millefolium, (T. & G.) Stem striate, lanuginous when young, 

 caespitose. Leaves bipinnately divided, segments parted, linear, mostly 

 radical, somewhat fleshy. Heads in dense corymbs. — June. 12 — 18 in. 



6. S. balsami'ta. Stern erect, simple, slender, glabrous. Radical 

 leaves oblong or ovate, serrate, glabrous, on long petioles ; cauline ones 

 pinnatifid, toothed. Flowers in terminal umbels; involucre many- 

 leaved, membranaceous along the margins ; ray florets 10 — 12-cleft. 

 Seed striate ; pappus bristly. — Yellow. If . April — May. Pine-bar- 

 rens. 1 — 2 feet. 



7. S. fastigia'tus, (Schw.) Stem erect, glabrous. Radical leaves 

 oblong-ovate, somewhat acute, dentate, glabrous ; cauline ones pinnati- 

 fid, with the segments notched and toothed, the terminal segment ovate; 

 involucre with subulate leaflets. Seed striate ; pappus abundant, seta- 

 ceous. — Yellow. If. May — June. Middle Car. 2 — 3 feet. 



Genus LXXVIIL— AR'NICA. L. 

 (From arnikis, a lamb's skin, from the resemblance of tbe leaves.) 



Involucre hemispherical ; leaflets equal, longer than the disk ; 

 receptacle naked ; pappus simple ; florets of the ray often with 

 5 filaments, destitute of anthers. 



1. A. nudicau'lts, (Ell.) Stem simple, hirsute, somewhat viscid. Rad- 

 ical haves opposite, sessile, somewhat viscid, decussate, dentate ; stem 

 nearly leafless, or with 1 — 2 pair of ovate sessile leaves. Floivers in 

 terminal racemes, on small branches at the summit of the stem; leaves 

 of the involucre hirsute, in a single series. Style 2-cleft. Seed obovate, 

 striate; pappus pilose. — Yellow. %. April — May. Damp pine-bar- 

 rens. Common. 1 — 2 feet. Leopard' s-bane. 



Tribe V.— CYNA'REJE. 



Hi ads Bometimea dioecious, mostly homogamous or heterog- 

 amous, discoid. 



Gems I.XX1X.— CENTAU'REA. L. 



(From the ( '>ut<iur, Chiron.) 



Involucre scaly; Bcales lanceolate, imbricate. Receptacle 



