CocKERELL: NorTH AMERICAN SPECIES OF Hymenoxys 495 
Cooperi, is somewhat in doubt regarding their specific identity, not- 
withstanding that Gray considered the former to be A. Cooper? 
He adds, “the involucral bracts seem fewer and broader.” 
Mr. Greenman writes that the type of A. Cooperi is a very 
poor specimen; only the upper portion ofa plant with one perfect 
head and an incomplete one. There is no Californian A. Coopert 
in the herbaria of the Calif. Acad. Sci., National Museum or Mis- 
souri Botannical Garden. 
Considering all the evidence available, I believe that the Ari- 
zona plant must be treated as a distinct subspecies, which is accord- 
ingly described. 
- Hymenoxys Cooperi Grayi subsp nov. 
The type specimen (in U. S. Nat. Museum) is Lemmon’s 2774, 
Huachuca Mts., Arizona, June—Sept. 1882. These mountains are 
in Cochise Co., south of Benson, and just north of the Mexican 
border. The achenes are very broad, subquadrangular, 4-nerved 
on each face, and little pubescent, what hair there is being pale 
ferruginous. The pappus-scales are white, broad and very short ; 
in one plant of the same lot (hb, Cal. Acad. Sci.) they are ferruginous. 
In well-developed specimens the basal leaves are very numerous. 
The character of the achene is unique in this group, but it may 
be abnormal or due to greater maturity, as other specimens of 
undoubtedly the same species have quite ordinary achenes. 
The following material is also referred to H. Coopert Grayi: 
I. Near Fort Huachuca, Arizona, September, 1894, 7. £. Wil- 
cox. Form slender and color light; no stout basal tuft; lower 
cauline leaves 8 or 9g cm. long, irregularly divided into 7 to 9 
linear segments, these leaves are a curious whitish green, but 
quite glabrous; stems green, with only the faintest reddening at 
base; rays yellow; heads (excluding rays) about 12 mm. diam- 
eter; outer bracts thickened and carinate basally, apical part 
green ; inner bracts broad, with long obtuse finger-like tips, sides 
of bracts copiously white-woolly. The outer bracts are seven in 
number. Receptacle conical; hair of achenes deep ferruginous ; 
Pappus-scales about half the length of disc-corolla, shining rather 
Sordid white, deep ferruginous at extreme base, subacuminate but 
Not in the least awned. This is unquestionably the same as subsp. 
Grayi. 
