45. COMPOSITA. 159 
Order XLV. COMPOSITA. 
Fl. capitate, surrounded by an involucre formed of scales 
(phyllaries). Cal. superior; limb obsolete or forming a toothed 
bristly or feathery pappus. Cor. tubular or ligulate. Stam. 5, 
inserted in the tube, anthers united, syngenesious. Fr. an inde- 
hiscent dry pericarp with an erect seed without albumen. 
The following arrangement of the genera is nearly that of 
Jussieu, as being more simple than that of DeCandolle which is 
followed in the arrangement of the species. 
Suborder I. CORYMBIFERA. 
Florets of the disk tubular; marginal florets often ligulate. 
Style not swollen below its branches. 
A. Pappus more or less hairy. 
* Anthers without bristles at their base. 
(1.) 1. Eupatorium. Heads few-flowered. Phyll. imbri- 
cate oblong. Receptacle naked. Florets tubular-funnel- 
shaped, hermaphrodite. Anth. included. Branches of the 
style exserted, cylindrical obtuse. 
(2.) 2. Perasires. Heads many-flowered, subdiecious. Fem. 
florets filiform, obliquely truncate or shortly ligulate, in many 
rows in the fem. heads, none or in | row in the male heads. 
Male florets tubular, few and central in the fem. heads, occu- 
pying the whole disk in the male heads. Receptacle naked. 
Phyl. in one row.—Plants subdicecious. 
(3.) 3. Tussizaco. Heads many-flowered, heterogamous. 
Fem. florets marginal, in many rows, narrowly hgulate. 
Male florets discoidal, tubular, 5-cleft. Receptacle naked. 
Phyll. in one row, with membranous margins. 
(4.) 24. Sunectro. Florets of the ray ligulate, fem., rarely 0 ; 
of the disk perfect, tubular. Involucre cylindrical or conical 
of 1 row of equal phyll. not membranous at the margin, and 
several smaller scales at its base. Pappus pilose. 
(5.) 23. Crveraria. Involucre of 1 row of equal phyllaries. 
Otherwise like Senecio. 
(6,) 22. Doronicum. Florets of the ray ligulate, fem.; of 
the disk perfect, tubular. Involucre hemispherical of 2 or 3 
rows of equal phyll. Pappus pilose, wanting in the ray. 
(7.) 8. Linosyris. Heads not radiant. Florets all perfect, 
