170 AMERICAN MIDLAND NATURALIST 
or somewhat erose margins. The whole head 15 mm. high. 
Pappus-bristles barbellulate. 
This species differs from L. scariosa principally by its narrow 
cylindric-campanulate involucres. 
Named in honor of and collected by Mr. Chas. C. Deam at 
the base of open dunes, south-east of Indiana Harbor, Lake 
County, Ind., on Sept. 23, 1906, the type bearing his number 1747. 
Laciniaria scariosa var. 
My paper on the different manifestations of L. scariosa in 
North Dakota was later followed by another paper on this species 
in Minnesota. I have still on hand the material belonging to 
Mr. Chas. C. Deam of Bluffton, Ind., and the editor of this journal 
has kindly placed the Laciniaria collection of the University of 
Notre Dame at my disposal. Thus armed I herewith make an 
attack on the species in general, independently of state limitations, 
and while the keys already published may be useful locally, the 
following general key, covers all the material hitherto studied 
by me. Perhaps here also is the proper occasion to make known 
that I am unwilling to give any positive statements regarding 
the prospects for future additions to it. 
Series I. Caules pubescentes, 1-5 dm. alti, solitarii vel 
aggregati, simplices. Inflorescentia racemus brevis, capitula 
1-12. Bracteae obtusae, virides marginibus purpureis, scariosis, 
erosis, externae orbiculares, mediae late spatulatae, internae 
oblongae. 
Group I. Stems pubescent, 1-5 dm. high, single or tufted, 
simple. Inflorescence a short raceme, heads 1 to 12. Bracts 
obtuse, green, with purple, scarious, erose margins, the outer 
orbicular, the middle broadly spatulate, the-inner oblong. 
To this group belong all the North Dakota varieties, described 
on pages 90-94 of this volume (except var. opima), var. scalaris, 
described on page 127 ibid., and var. subcorymbosa, described on 
page 158 ibid., and recognized from all the others by 
its different inflorescence. All of them have involucres 1-2.5 cm. 
wide, except var. praestans which belongs to the large-headed 
varieties, having its involucres 1.5-3 cm. wide. 
Sereis II. Caules pubescentes vel glabrati, 3-16 dm. alti, 
solitarii vel aggregati, simplices vel ramosi. Inflorescentia capitu- 
lorum 12-90 in racemo vel spica elongata, compacta vel inter- 
