130 BOTANICAL GAZETTE | avonst 
quite certain that the wide range attributed to this species in Gray: 
Synoptical Flora is due to other species being included. With t 
erection of P. floribunda (Gray) Greene and P. canescens (Eaton) Greett 
into species the area covered has also been segregated. But even allt 
the establishment of the two following species some Rocky moutta 
, are still left to represent the origi 
forms, such as my no. 
species. 
PICRADENIA LIGULAFLORA Aven Nelson, Bull. Torr. Bot. Claba | 
378. 1898. 
This species is proving to be far more common than was at fis | 
suspected. As to habitat see notes on the following species. 
Picradenia macrantha, n. sp.— Caudex branched, each branch s 
mounted by a few to several crowns; crowns clothed with the lana 
leaf-bases: stems single from each crown, erect, tascicled, sparse 
pubescent, somewhat striate, about 15°" high : leaves glabrate, not coe 
spicuously punctate, rather numerous on both crowns and siti 
slender petioled, the blade variously parted into linear divisions 
of them pedately trifid, some of the stem leaves pinnately P 4 
twice trifid, the uppermost sometimes simple: heads large, peduncle 
one to five on each stem (generally two or three): involucre ge 
than the disk flowers, outer bracts lanceolate, nearly glabrous, © 
for half their length, 6™ long; inner oblong, acute, scarious me é 
rays 6-10, chrome yellow, the ligule 15-18" long and one thi 
broad : pappus scales 5-7, lanceolate, shorter than the corolla. 
habitat of this is open, stony slopes in the mountains or hills, 
flora occurs on dry, clayey, alkaline ridges or flats on the ope? sist | 
number 4830, Fort Steele, June 18, 1898. What seems to be the er 
is no. 1688, Centennial hills, Aug., 1895 ; also South Park, Cole» 
Marcus E. Jones.—AveNn NELSON, University of Wyoming. 
PYCNANTHEMUM VERTICILLATUM, A MISINTERPR®™ 
MINT. 
to 4 
Mr. W. W. Ecc.LeEston has called my attention 
themum, abundant about Rutland, Vermont, which has ss 
by recent botanists with both ?. muticum Pers. and P. gues 
but appears different from either of those specie - 
