287 
Artemisia serrata, Nutt. Gen. ii. 142 (1818). 
Reported as occurring from Illinois to Dakota, but probably 
never before collected in Minnesota. It was found in low swampy 
ground near Taylor’s Falls, Chisago county, Minn. (B. C. Taylor, 
_ Aug., 1892). 
Echinops spherocephalus, Linn. Spec. i. 814 (1753). 
This European composite has been introduced in the néigh- 
borhood of St. Anthony Park, Ramsey county, Minn. (Dr. Otto 
Lugger, Sept., 1891, and Oct., 1892). It is becoming thoroughly 
established. To my knowledge this is the first recorded occur- 
rence of the plant in North America. 
The Systematic Position of Hartwrightia Floridana. 
By Joun M. HoLzincER, 
(PLaTE CLX.) | 
Dr. Gray established this monotypical genus of the order Com- 
Posita on plants communicated by Dr. S. Hart Wright, who col- 
lected them in sphagnous swamps in Volusia county, Florida, in 
November, 1886. Since that time the plant seems not to have 
been collected. again, except by Mr. Otto Vesterlund, who in No- 
vember, 1889, found it near Pittman, Lake county, just west of the 
locality at which Dr. Wright discovered it. Is it possible that this 
is the full range of this plant? It seems that after the lapse of six 
years it ought to have turned up at more stations. It is more 
likely that the plant has been found, but could not be identified, 
and that this is the real reason for the meagre data concerning its 
distribution. ‘ ; 
The genus Hartwrightia is first described in Proc. Am. Acad. 
xxiii. 264 (May 209, 1888). It is there referred to the Piqueriex, 
With Gymnocoronis and Adenostemma as the nearest related genera, 
being supposed to be the only member of this subtribe within our 
limits. But the plant has evidently appendiculate anthers, and so_ 
Should stand in the next subtribe, the Ageratea. The nearest 
allied genus is Ad/omia, with which it has in common two charac- 
ters, namely, absence of pappus, and the number of involucral 
’ 
