36 MISSOURI BOTANICAL GARDEN. 
first represents, as far as I am able to determine, the 
species in its most typical form. 
8. latifolia proper.— Monoecious or subdioecious ; large, 
erect, 3 to 6 dm. high; leaves longer than broad, glabrous 
or rarely pubescent, 15 to 40 cm. long, with lobes from 
broadly ovate, acute, to linear lanceolate, acute or acu- 
minate; scape erect, simple or branched; bracts glabrous, 
acute or acuminate, 1 to 5 cm. long; verticils rarely ap- 
proximate, mostly more than five; fertile pedicels 2 to 4 or 
sometimes 6 or 8 cm. long; fruiting head 15 to 30 mm. in 
diameter; achenium about 3 mm. long.— This is the com- 
mon form from Massachusetts and New York west to 
Colorado, and south to Florida and Louisiana. 
Specimens examined from Prince Edward Island (Macoun, 1888); 
Ontario (Macoun, 1884; Britton, 1889); Massachusetts (Deane); New 
York (Torrey; Morong); New Jersey (Dr. Gray, 1833; Bernhardi; Brit- 
ton, 1889); Pennsylvania (Durand, 1848; Porter); Ohio (Riehl, 1838) ; 
S. Carolina (M. A. Curtis); Alabama (Mohr); Indiana (Case, 1878; 8. 
Watson, 1890, Crawfordsville, has a branched scape with 6 lower whorls 
fertile, fruiting head 20 to 25 mm. in diameter on pedicels 15 to 20 mm.long, 
bracts 3 cm. long, acuminate, achenium crested, 2.5 mm. long, the beak 
oblique); Illinois (Engelmann and many collectors); Missouri, common; 
Michigan (Farwell, 729, 1889; Schneck, 1881; Davis, 1890); Minnesota 
(Sandberg, Red Wing, 1885, 622, 1891; Taylor, 907, 1891, Glenwood) ; | 
Iowa, common; S. Dakota (Williams, 1892, numerous localities) ; East- 
ern Nebraska and Kansas, common; Colorado (Denver, Fritchey, 1886); 
Louisiana (Dr. Hale, specimens with ovate bracts 1 cm. long); Florida 
(Dr. Chapman, 1863, with the upper part of the petiole and the under 
surface of the leaves pubescent, fertile pedicels and acuminate bracts 1 
cm. long, bracts and sepals glabrous). 
This form includes a part of communis, and all of acuta 
and subdioica of the Engelmann Herbarium, and a part of 
Macoun’s var. Aastata, Cat. Can. Pl. 7. c. The common 
form in Indiana, Illinois, lowa and Missouri, has a dorsally 
crested obliquely beaked akene 2 to 2.5 mm. long, fertile 
pedicels 12 to 15 mm. long, shorter than the acuminate 
bracts. This passes into the form with longer (3 to 3.5 
mm.) akenes with horizontal beaks. Iam unable to sep- 
arate them except geographically. The dorsally crested 
10 
