476 COoOCKERELL: NortTH AMERICAN SPECIES OF HYMENOXYS 
hair of achenes and pappus white ; pappus only moderately long. 
It is this material, and that from Como, Colorado, that seem to 
me to break down the distinctions between subspecies macrantha 
and ligulaeflora. 
CoLorapo. — Central Colorado, as far south as Park and Lake 
Counties ; further south it is replaced by H. floribunda. Como 
and near Como, Park Co., 9,800 feet, July 23, 1897, C. S. Cran- 
dall; Twin Lakes, August 7, 1873, /. W Coulter ; South Park, 
8,500 feet, September 17, 1878, 7. E. Jones ; South Park, July, 
1873, John Wolf ; \at. 39-41°, alpine and sub-alpine, all & Har- 
bour ; South Park, 1891, Adda Lansing. As it goes southward, 
the plant reaches quite high altitudes. One sheet from Como is 
said to have come from a meadow, showing that the mesophytic 
appearance of the plant is not wholly illusory. The altitude of 
this meadow is given as 9,775 feet; the date, August 3, 1895. 
This appears to be very good macrantha, as to general appearance, 
achenes and pappus; but the sheet from near Como, certainly not 
a different plant in any important respect, is labelled P. ligu/aeflora 
by Professor Nelson. This has the heads nearly as large as in 
subspecies macrantha, but the achenes are of the long type; hair 
of achenes silvery-white ; pappus-scales white, ferruginous at base- 
The habitat is very different from that normal to subspecies ligu- 
lacflora. One sheet of the Hall and Harbour material (herb. Cal. 
Acad. Sci.) has the heads (excl. rays) only 9 to 10 mm. broad, and 
is fairly intermediate between macrantha and ligulaefiora. 
The Twin Lakes material has all the appearance of subsp. 
macrantha ; but the achenes, though broad as in macrantha, are 
long enough for 4igu/aeffora ; hair of achenes ferruginous ; pappUS- 
scales rather short, as in macrantha. Another sheet from Twin 
Lakes is marked July 22, and is just coming into flower. The 
Wolf material from South Park has the achenes short, with deep 
ferruginous hairs ; pappus-scales very strongly ferruginous basally, 
not very greatly over half length of corolla. 
Uran.— Emery, 7000 ft., June 16, 1894, M@/. Z. jones; near 
Emery, on clay, June 16, 1894, 7000 ft., JZ. E. Jones ; Cannonville, 
6000 ft., May 28, 1894, @. E. Jones. These plants, from southern 
Utah, are not typical, the flowers being on the average smaller 
(heads excluding rays about 10 mm. diam.— 12 to 16 in macraz- 
