
901] ROCKY MOUNTAIN PLANTS 4OI 
Coieosanthus congestus, n. sp.— Roots fascicled, large, semi- 
fleshy, with a woody crown: stems several to numerous, ascend- 
ing or nearly erect, simple, 3-6%" long, minutely pubescent, 
obscurely striate: leaves opposite below, only the uppermost 
alternate, green and nearly glabrous, or obscurely roughened- 
scabrous, especially on the veins below, lightly sprinkled with 
resin particles, deltoid-triangular, with truncate or cordate base, 
from sub-acute to acuminate, 3-6™ long, crenately-serrate, the 
apex entire; petioles variable, very short to equaling or sur- 
passing the blade: inflorescence congested at the summit of the 
simple stems, the crowded cymes of the few heads subtended by 
foliar bracts, sometimes one or more additional cymes terminal 
on widely divaricate or ascending peduncles from the axils of 
the uppermost leaves: heads 10-12™™ high, subtended by a few 
loose long-acuminate bracts; the involucral bracts in about 5 
Series, the outermost ovate, acuminate, pubescent and ciliate on 
the margins; the succeeding rows passing from broadly lanceo- 
late to broadly linear, green between the 3 or 4 raised white striae 
and ciliate on the scarious margin: flowers about 50: corolla 
narrow, tubular, about 7™ long: anthers wholly included within 
the tube proper: style branches spatulate-clavate, the exserted 
portion about 3™ long: akenes linear-cylindric, subglabrous, 
10-striate, 3-4™™ long. 
This is undoubtedly, in part, the Bricke//ia grandiflora of Gray, Syn. F7. 
105, but is certainly distinct from Eupatorium(?) grandifiorum Hook. F7. 
2:26, and probably from Brickellia grandiflora Nutt. Trans. Am. Phil, Soc. 
n. ser. 7:287. The original seems to have been a tall, probably single- 
stemmed plant, paniculately branched at the summit, with larger, fewer- 
flowered heads, and white corollas. This Oregon plant is probably in large 
part the Colcosanthus grandiflorus of the recent Flora of N. W. Amer ed 203, 
by Howell, who writes from near the type locality. The tufted habit, simple 
stems, congested inflorescence, and more numerous flowers of C. congestus 
seem to me to be specific characters. 
The collections at hand are: 423, Fairbanks, July 10, 1894; 1687, Cum- 
mins, July 16, 1895; 4212, Battle lake, August 17, 1897; 7506, Antelope 
basin, July 8, 1900 (type); also Palmer lake, Colorado, August 12, 1896, 
by Professor C. S. Crandall. 
