264 Contributions to Western Botany. [ZOE 
valleys and abounds in western Utah and eastern Nevada at 
elevations from 4300 to 5500 feet. If these distinctions given to 
uphold the species fail, then this species cannot be maintained. 
Townsendia sericea Hooker. A form of this in the Herbarium of 
the California Academy collected by Greene in New Mexico, local- 
ity not given, has the scales of 7: Rothrockiz and the pappus and 
leaves of 7. Wrlcoxiana, tending to confirm a suspicion which I 
have long entertained that these two species are only sports of 7: 
_Sertcea, and are not valid. A form collected by Miss Eastwood 
at Mancos, southwestern Colorado, June, 1891, shows an approach 
to 7. incana. ‘The rays of 7: sericea are glabrous. 
Townsendia incana, Nutt. As I have already indicated 7. 
Arizonica is a form of this species, being separable only by the 
pappus a worthless character. In looking over my material 
from Milford, Utah, 1880, and named by Gray himself, I find 
that the pappus of the ray is often one-half that of the disk and 
the heads are often short peduncled with all sorts of transitions 
between, the rays are glabrous except very minute atoms 
scattered over them. True 7: zzcana usually grows in smaller 
mats in lower elevations and has the rays pubescent with 
flattened hairs which are tipped with yellow gland-like enlarge- 
ments. It is very common in the Sonoran region of eastern 
Utah and southwestern Colorado. and blooms in May and June. 
, 
An interesting form of this species is— 
Townsendia incana Nutt. var. ambigua, n. var. This 
would suggest 7. grandifiora in some things. Short-lived per- 
ennial but blooming the second year; leaves spatulate, acute, 
gradually narrowed into a long petiole one to one and one-half 
inches long; heads ebracteate, from sessile to peduncled, peduncle 
being sometimes three inches long, one-half inch high or more, 
one-half inch to an inch wide; bracts in two to three series, 
acute. In all the specimens which I have seen, the pappus is 
in the ray flowers less than one-third that of the disk flowers, of 
single scales that are very natrow and bristle-like; otherwise 
exactly asin the species, except that it is less branched than 
the type. Common with the type in the same region as the 
type. It blooms from the middle of April to June. Collected 
