Vol. 37 No 9 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
—- = 
SEPTEMBER, rgi1o 
Studies on the Rocky Mountain flora — XxXIll 
PER AXEL RYDBERG 
“ Gaillardia Mearnsii sp. nov. 
Annual; stem 1-3 dm. high, leafy only towards the base, 
finely pubescent; basal leaves oblanceolate or spatulate, petioled, 
5~10 cm. long, puberulent, entire or round-lobed; upper leaves 
similar or sometimes pinnatifid with rounded lobes; peduncles 
I~2 dm. high; involucres about 2 cm. broad; bracts lanceolate, 
acute, grayish-pubescent; disk-corollas purple, their lobes short 
and rounded, fimbriate; pappus-scales lanceolate, each gradually 
attenuate into a slender awn equaling the corolla; rays yellow, 
10-15 mm. long. 
The type sheets were labeled G. aristata, which it somewhat 
resembles in general habit, but the lobes of the disk-corollas are 
not attenuate. It resembles, however, still more, G. arizonica 
in the annual root, the stem naked above, and the leaf-form, al- 
though the leaves are more inclined to be entire; but it differs 
from that species in the purple disk and the gradually acuminate 
and long-aristate pappus-scales. On the whole, it is therefore 
more nearly related to G. pinnatifida, although the plant is evi- 
dently an annual and the leaves are seldom pinnatifid. When 
pinnatifid, their lobes are short and rounded. 
Arizona: Fort Verde, May 4, 1888, Mearns 322 (type, in 
herb. N. Y. Bot. Gard.). 
Uta: Sandy bluffs near Green River, June 12, 1900, Stokes. 
TETRANEURIS 
In Coulter & Nelson’s New Manual the name Actinella Nutt. 
has been readopted for this genus, apparently in conformity with 
[The BuLLeTIN for August, 1910 pe 393-442) was issued 8 S 1910.] 
44 
