rerennial herbs with stout tanroots or in one Species a simli annual, 
all witn basal leaves ana milky juice. Neaas displayed on erect naked peduncles 
which exceed the tuft of leaves, their involucres bell-shaped or Cylindrical, 
consisting of <-several series ov unequal or subequal usually lanceolate bracts; 
receptacle flat, naked. flowers yellow or orange, becominy rinkish or purplish 
in age. Achenes spindle shaped, longitudinally ribbed, or in one Species, the 
ribs ov the outer series replaced by wavy wines, all either tapering into a 
usually slender beak, at the apex of which is the tuft of shining white pappus 
or lishtly narrowed at the ADO, TOF at all beaked. 
6 Slender annuals with roots varely 1.5 mm. in diameter; 
4 leaves mostly less than 10 cm. Long 
O Ferennials with stout taproots ©-6 mn. in diameter or 
4 more, often with a tranchin: caudex; leaves mostly 
10-40 cm. Long 
%, corollas a ricn orange color 
4 Leaves mostly i-2 cme wide; body of mture achsnes 
@ 505-6 mm. lon, the beak 6-7 mm lons 
o 
wi 
op 
4, Leaves mostl: 1 than 1 cme wide, often 4-5 mn. 
1 ey 1. es ; 5 25 
af viaes bouy o: tue mature achenes 6-6 ma. long, 
BA the peak subequal 
_ 
2 Corollas yellow 
ab) 
ion 
@ 
jee] 
ee) 
wa 
— 
oO 
se) 
OG} 
et 
ry 
(4) 
4 i:ature achenes taverin. into 
& body or longer 
ee 
(o Achenes 6 ma. lon., tarering into a bea: nearly 
lo as long 
S 4e0-5.5 mm. lons, the slender beak 
4 ature acnenes somewhat narrowed or tarering into 
) 9/2 short bea not more than half as lone as the 
} ‘ D ody 
(oe Deak of the achenes about half as lon as the 
at any rite not obscure 
AAs . 
10 NOas ’ o 
 Beax of achenes wanting or obscure 
f& Poliace slabrate; leaves prevailingsly 
Le 
ZZ, 15-00 cm. loa 
the wv - ans J aft 
a Ee AF eases 
ye 2 Olle LZL1¢ eae 3 POV aL 1h Les 
Y | aa 
tnan Lo Cm. Lon 
4 . Pa Pe a eee 
b. fe SCOrZOnerserfolia 
— 
a ss 
Ae heterorhylla 
Ae aurantiaca 
we sracilens 
se Glata 
Ae Crandgiflora 
