Calathidium (Capitulum), composed of a many-flowered 
disk, which is regular and hermaphrodite, and of a ray, 
the florets of which are disposed in a single row, ligulate, 
and neuter. Periclinium (Involucrum) double; the inner 
composed of scales, which are one-ranked, equal, appress- 
ed, oval-oblong, obtuse, somewhat membranous; the outer 
shaped like an involucrum, and composed of scales in one- 
rank, not appressed, foliaceous. Clinanthium (Recepta- 
cle) flattish, covered with narrow, . linear, obtuse, membra- 
nous scales. Ovary compressed before and behind. Pappus 
none, or reduced to one or two shapeless rudiments resem- 
bling very short, thick, three-cornered, bearded scales, not 
distinguishable from the tips of the two lateral awns of thé 
ovary. 
The family of Helianthez-Coreopsidez is principally 
distinguished from its coordinates by having its ovary usu- 
ally 4-cornered, and compressed before and behind, so that 
its greatest diameter is from right to left; which is just the 
reverse of the character of the Helianthez-Prototypz.— 
Dict. des sciences nat. 10. 418. 
J. L. 
