W ATSON—Plants of Bernalillo County 
Pappus not composed of numerous bristles but of sev- 
eral short chaffy scales, - (3) GUTIERREZIA. 
Pappus of numerous slender bristles, double, outer of 
very small chafty waa ‘Heads many-flowered 
with’ numerous rays, - (4) citrysopsis. 
Soe papus. 
Heads rang HO ere: many rays; 
-- -  - (5) APLOPAPPUS: 
beng 3-30 | no rays (6) -BI@ELOVIA. 
Heads few to many- flowered, rays | : 
1-6 SRN iain ea atic - -(7)  soLrpago. 
. ** Ray flowers white, alge or purple, never 
yellow. 
Pappus of both disk be ray Hones: short crown of 
seales, -' +’ + - =: (8) APHANOSTEPHUS: 
Pappus of several short chaffy bristles and nea 
ere 3 or 4) benitak tas ne ones; 3 
- (9). BOLTONIA. 
cae of disk’ Pe it ae hair-like bristles. 
That of rays none or a mere vestige, ae PSILACTIS. 
_ That of rays similar to disk, 
Heads on leafy peduncles, bracts ie Frivetiere aie 
‘qual, pappus simple, copious,: © (11) asTmr. 
Heads on naked peduncles involuere’ of narrow 
‘equal bracts, pappus rather seanty, 
Re SMa seh Pk i) Cea AD a Oe 
That of the ray chaffy, or a single series of long 
awns or coarse and rigid brist les, 
Se A ak aah le - (13) TOWNSENDIA: 
*** Pays none; heads ‘iensinhe: Wo pene or all 
staminate ). | 
Heads ace) ‘flowered ; Pappas s capillary; slehee 
- (14) sBaccHaRIs: 
i II. INULOIDEAE. Heads discoid; anthers sa- 
_ gittate; the basal i with long tails ; Wider ion capil- 
lary or none. 
_ Heads dioecious, - (15) ANTENNARIA. 
Trepp iv. NetranrnormErar. Heads radiate, or dis- 
— coid, involucre not thin and papery ; receptacle chaf- 
fy; pappus never capillary, sometimes none. 
*Heads radiate, the ray pistillate and fertile, the 
disk perfect but sterile. 
Involucral bracts in 2 rows, the inner embracing or in- 
closing _ the ackenes; no pappus, 
Nie - - nh - (16) MELampopium. 
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