408 BOTANICAL GAZETTE [JUNE 
a broad base: inflorescence of about 5 heads subtended bya 
pair of ovate-lanceolate bracts, 1-2°™ long, in a close rounded 
corymb, the terminal head and the first pair very short peduncled: 
terminal head much the largest, 1o-12™" high and about as 
broad: involucral bracts in 2 series, shorter than the disk, nar- 
rowly oblong, obtusish, the tip tinged with purple and tomentose- 
ciliate: rays few, short, broad, slightly narrowed at apex: tube 
of disk corollas pubescent, the glabrous throat scarcely dilated: 
akenes very minutely pubescent; pappus dirty-white, minutely 
scabrous. 
The specimens on which this species is based were collected in 1892 by 
Mr. J. D. Parker, somewhere in southern Wyoming. Specimens were sent to 
the Gray Herbarium for determination. The name returned was A. foliosa 
near var. incana Gray. Now that Dr. Greene has helped us to a more defi- 
nite knowledge of A. incana (Pitt. 4: 169), this may with safety be designated 
by a name. 
Arnica celsa, n. sp.—Perennial from horizontal rootstocks 
and fleshy roots, erect, tall, 4-64™: the strict stems lightly 
striate, sparsely pubescent with flat spreading hairs, upwardly 
becoming also obscurely glandular-viscid: leaves (exclusive of 
the foliar bracts) 6-8 pairs, puberulent and sprinkled with micro- 
scopic shining resin particles, narrowly oblong or oblanceolate, 
tapering to both ends, many of them 3-nerved; the lower small, 
2-3°" long, equaled by the slender petioles which abruptly 
dilate into the equally long ocreae; ocreae and leaves gradually 
shorter upward; middle stem leaves longest (8-10), sessile or 
with short petioles and ocreae; the uppermost sessile and partly 
clasping: lower internodes short, much exceeded by the leaves, 
gradually longer upwards and above much exceeding the leaves: 
heads 3-5, on rather slender leafy-bracted peduncles; involucre 
and peduncles moderately glandular-viscid; the bracts approxi- 
mately uniserial, oblong, much shorter than the 12-15™” 
high disk: rays 12-20, about 7-nerved, 2 or 3-toothed, 1o-I14™™ 
long: tube of disk corollas slender and pubescent below, grad- 
ually dilated into an equally long glabrous sub-cylindric upper 
portion with short spreading glabrous teeth: akenes sub-glabrous, 


