CICHORIACEAE 1487 
PODES not plum 
Pappus consisting, at least in part, of scales which 
sometimes are ce into a crown 
In onere single: pappus | E both scales and 
ristles: corolla ye 
Pappus of 5 broad Seale and 5-10 bristles: 
plant annual. 4, KRIGIA. 
xi ds of 10-15 minute narrow scales and 
10—15 bristles or more: plant perennial. 5. CXNTHIA. 
muvee ade p appui crown-like, of numer- 
n20 ore series: corolla blue. 6. CICHORIUM. 
Paunus- consisting. of capillary bristles, not plumose. 
Ache ar flattened, cylindric or prismatic. 
e not beake d. 
Coroll a rose or purplish. 
Achene tapering to the apex: plant 
with Ted like stems and narrow 
leaf-bla 7. LYGODESMIA. 
Achene ‘tapers ng to the base: plant 
wit ane-like stems and broad leaf- 
blades. 8. NABALUS. 
Corolla yellow, cream-colored, or white. 
Ligules cream-colored. 8. NABALUS. 
Lisules ru 
Pap awny, or white in H. 
argyraeum : leaf-blades not pin- 
natifid. 9. HIERACIUM. 
Pappus white:  leaf-blades  pin- 
natifid. 10. CREPIS. 
Achene beaked at the apex, d "duum long and 
slender or short and st 
aee EA least the ma pul ones slen- 
er 
Achene ai merely nerved or ribbed. 
Bracts of the n involucre ap- 
pressed: pa white: ue 
Aa E a ur ed bas 10. CREPIS. 
DM sordid : achene attached 
a disk-like base n SITILIAS. l 
Achene EE ond spinulose. . LEONTODO 
Achenes with short stout beaks. ix HRACHUREL DEUS 
Achene flattened. 
Achene narrowed at the apex or beaked. 
Achene thin, prolonged into a slender, 
often filiform beak. 14. LACTUCA. 
chene thickish, narrowed at the apex, 
ut not beaked. 15. MULGEDIUM. 
Achene truncate at the apex. 16. SONCHUS 
1. SERINEA Raf. Annual, pale, tender, caulescent herbs. Leaves 
often numerous: blades narrow, entire, repand, or lyrate-pinnatifid. Heads 
long-peduneled, small (1-1.5 em. broad). 
Involuere campanulate: bracts rather broad, 
ribbed, erect at maturity. Corollas yellow 
Achene obovoid, 8—10-ribbed. Pappus — 
ing obsolete.—' Three. species, North 
Eo» ERN 
EE 
American. 
1. S. oppositifolia (Raf.) Kuntze. Stem 
9-30 em. tall, slender, sometimes sparingly 
glandular- 2e leaf-blades spatulate 
to linear s em. long, ed bcne 
e often toot 
Be m "with petiole- like e T 
the upper entire and sessile: bract s of 
the involuere ovate to lanceolate, becoming 
4-5 mm. long: achene 1.5 m ong, ear pen! ribbed.—Moist soil, fields, 
—spr. 
and waste-places, various ee Fla. to Tex., Kans., and S. 
