45. COMl'OSIT.-E. 
197 
Receptacle convex or conical. Phyll. imbricate, of few 
^ rows. Fr. terete, or bluntly tetragonal, without pappus, 
• but with a more or less prominent margin. 
{Anacyclus. Fr. compressed, winged at the edges. Other- 
wise like Anthemis.] 
(22.) 14. Achillea. Heads radiant. Fl. of the ray fern., 
ligulate, short ; of the disk perfect, tubular ; tube plane- 
compressed, 2-7vinged. Receptacle nearly flat, afterwards 
often narrow and lengthened. Inv. ovate or oblong. 
Phyll. imbricate. Fr. compressed, without pappus. 
M (23.) 18. DiOTis. Heads discoidal. Fl. all perfect, tubular ; 
tube compressed, with 2 auricles at the base. Receptacle 
convex, with concave downy-topped scales. Inv. bell- 
shaped. Phyll. imbricate. Fr. compressed, crowned witL 
the persistent auricled tube of the cor. ; pappus 0. 
C. Papp us of 2 — 5 stiff bristles. Receptacle scaly throughout. 
(24.) 23. BiDENS. Heads discoidal, sometimes radiant. Fl. 
(of the ray neuter, ligulate ;) of the disk herm., tubular. 
Receptacle Hat. Phyll. in 2 rows, outer row spreading. 
Branches of the style surmounted by short cones. Fr. 
compressed, angular, rough at the edges ; the angles 
ending in 2 — 5 hispid bristles. 
Suborder II. CYNAROCEPHALE.E. 
Flowers all tubular. Style usually thickish below its 
branches, which often combine into a more or less perfect 
cylinder. Involucre imbricate. 
a. Basal scar of fr. transverse, rounded. Anthers tailed. 
25. Saussurea. Fl. all perfect. Fhyll. unarmed. Recep- 
tacle scaly. Pappus in two rows, outer of short rough 
bristles, inner feathery. 
26. Caelina. Fl. all perfect. Outer phyll. lax, leaHike spi- 
nous ] inner linear, membranous, coloured and resembling 
a ray. Receptacle with cleft scales. Pappus in one row 
branched and feathery, united in a ring below. 
27. Arctium. Involucre globose. Phyll. ending in hooked 
points. Receptacle flat, with rigid subulate scales. Fr. 
compressed, oblong. Pappus short, hairlike, distinct. 
