160 
46. COMPOSIT.E. 
entire. — E. B. 878. — St. 1 — 2 feet high. Raihcal 1. numerous, 
stem 1. few. FI. purplish-blue, rarely white. St. and both sides 
of the 1. hairy or glabrous. — Meadows and pastures. P. VII. — 
X. Devil’s bit. 
2. S. Columbaria (L.) ; heads of fr. globose, involucel mem- 
branous plaited notched, caly.\ of 5 nerveless bristles, cor. 5-cleft, 
radical 1. oblong stalked crenate entire or lyrate, upj)ermost 1. ])in- 
natifid with linear segments. — E. B. 1311. — St. 12 — 18 in. high. 
Radical 1. obtuse, or, rarely, lanceolate and acute, on long stalks. 
FI. purplish. Involucres narrow. — Common on a calcareous soil. 
P. VII. VIII. E. S. 
Order XLVI. COMPOSITE. 
FI. capitate. Cal. superior; limb obsolete or fonning a toothed 
bristly or featheiy pappus. Cor. tubular or ligulate. Stam. 5, 
inserted in the tube, anthers united, syngencecious. Fr. an in- 
dehiscent tlry jjericarp with an erect seed without albumen. 
The following arrangement of the genera is nearly that of 
Jussieu, as being more sinij)le than that of DeCandolle, which is 
followed in the arrangement of the species. 
Suborder I. CORYMBIFER^. 
Florets of the disk tubular forming a level top ; marginal florets 
often ligulate. Stigma not jointed to the style. 
* Pappus more or less hairy. 
(1.) 1. Eupatorium. Heads few-flowered. Involucre im- 
bricate oblong. Receptacle naked. Florets tubular-funnel- 
shaped, hermaphrodite. Anth. included. Branches of the 
style exserted, cylindrical obtuse. 
(2.) 2. Petasites. Heads many-flowered, SMidiopcioMS. Fern, 
florets filiform, obliquely truncate, in many rows in the fem. 
heads, in 1 row in the herm. heads. Herm. florets tubular, 
few and central in the fem. heads, occupying the whole disk 
in the herm. heads. Receptacle naked. Involucre in one 
row. 
(3.) 3. Tussilago. Heads many-flowered, heterogamous. 
Fem. florets marginal, in many rows, narrowly ligulate. 
Male florets discoidal, tubular, 5-cleft. Recej)tacle naked. 
Involucre of one row of scales with membranous margins. 
(4.) 25. Senecio. Florets of the ray ligulate, fem., rarely 0; 
of the disk herm., tubular. Involucre cylindrical or conical 
