CHICORY FAMILY 611 
Calyx formed by a little crown of scales. 
Receptacle not chafty. 
MipwersgOlggy wny,s G1 ys ee 3 Circhorium 
Mlowersevellowr <2) a, et Pah. eas, krigia 
Calyx none or a simple inconspicuous ring. 
Receptacle not chaffy. 
Flowers yellow. 
Flower scape enlarging toward (below) the 
flower head, leaves basal . . . . Arnoseris 
Flower scape not thickening or enlarging below 
the flower head, leaves mostly on the stem. 
Brut 20 to 30 ribbed . . .°. 2’ Lapsana 
Calyx of 1 row of plumose bristles. 
Leaves all basal. 
necepiaclievehatiy 4. mss 3. rit a Hypochaeris 
ineceptacle mot. chaiiy.. 2 =. -. «  . Leontodon 
Leaves, at least some of them, growing from the stem. 
Plant hairy, flowers yellow . . . . . Pieris 
Plant not hairy, flowers purple or yellow Tragopogon 
Calyx of an aigrette of hairs which are not plumose, but 
toothed. 
Fruit (achene) surmounted by a column from the summit 
of which the hairs radiate, the achene hairy or with 
many little spines...’ . - . +» « s « "faraxacum 
Fruit similar to above, but achene not spiny or hairy, 
though possibly rough. 
Presi achene) fattened {9 . 5. ek  Laetues 
Fruit blunt at top, without a column. 
Fruit flattened and roughened . . . =. . +. Sonchus 
Fruit cylindric. 
Flowers yellow. 
Involucre of 1 long and 1 short row of bracts Crepis 
Involucre of several rows of bracts of irregular 
FEO GC yt WIN cities, co! a) te 2 ERGRACKEIN 
Flowers cream, white or purple . . . Prenanthes 
1. CICHORIUM, L. 
Branching perennial herbs, with stem leaves grass;like, clasping and 
with a rosette of basal leaves. Flowers blue, purple or pink, the heads 
among the branches with short pedicels or none, usually 2 or more in a 
