624 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
9. MALACOTHRIX DC, 
Low branching annual with numerous stems terminated by medium-sized peduncu- 
late yellow heads; leaves mostly basal, pinnatifid; involucre campanulate, of numerous 
narrow, equal, somewhat imbricated bracts and a few short outer ones; achenes 
truncate at both ends; pappus a very shallow entire cup. 
1. Malacothrix fendleri A. Gray, Pl. Wright. 2: 104. 1853. 
Tyre Locatity: Low sandy banks of the Rio del Norte, New Mexico. Type col- 
lected by Fendler. 
Rance: Western Texas to southern California, 
New Mexico: Santa Fe; Sandia Mountains; mesa west of Organ Mountains; Mesilla 
Valley; Organ Mountains, Dry mesas, in the Lower and Upper Sonoran zones, 
10. SITILIAS Raf. Fatse pANDELION. 
Nearly glabrous perennial with a rosette of entire to pinnatifid basal leaves, alternate 
divided cauline ones, nearly simple or much branched stems, and large heads of 
yellow flowers; involucre a series of equal appressed narrow bracts with a few linear 
short outer ones; achenes fusiform, with a long slender beak; pappus reddish, simple, 
capillary, surrounded at the base by a soft-villous ring. 
1. Sitilias multicaulis (DC.) Greene, Pittonia 2: 179. 1891. 
Pyrrhopappus multicaulis DC, Prodr. 7: 144. 1838. 
Type Locauity: ‘In Mexico ad Tamaulipas et S. Fernando de Bexar.” The first 
locality is Mexican, the second Texan. 
RANGE: Texas to Arizona and southward. 
New Mexico: San Juan; Pecos; Albuquerque; Los Lunas; Socorro; Mangas Springs; 
Kingston; Mesilla Valley; Roswell. Wet ground, in the Lower and Upper Sonoran 
zones, 
This is a very variable plant. There seems to be no means of distinguishing Pyrrho- 
pappus rothrockii A, Gray, That is a mere form and not worthy of nomenclatural 
recognition, 
11. AGOSERIS Raf. 
Acaulescent perennial herbs with mostly narrow, entire, toothed, or pinnatifid 
basal leaves, and large scapose heads of yellow, orange, or purplish flowers; involucre 
narrowly campanulate or cylindric, of numerous narrow imbricated bracts, the outer 
successively shorter, herbaceous, not thickened; achenes oblong or linear, terete, 
10-ribbed, with a long or short beak; pappus of numerous capillary white bristles, 
KEY TO THE SPECIES. 
Beak of achenes slender, about as long as the body, nearly smooth 
at the middle. 
Flowers yellow; leaves linear or nearly so...........2..2.--- 1. A. graminifolia. 
Flowers purplish or orange; leaves not linear, 
Bracts conspicuously blotched with purple............... 2, A. purpurea. 
Bracts not blotched with purple, sometimes slightly pur- 
plish along the midrib. 
Leaves glaucous, glabrous, pinnatifid with linear 
lobes... 2.2.2.2 222220222220 eee eee ee eee es 3. A. greenci. 
Leaves green, somewhat pubescent, entire or with 
broad lobes.........0. 2c eee eee ee eee eee ee eeee 4. A. aurantiaca. 
