496 COMPOSITAE Vou. III. 
3. Bidens connata Muhl. Purple-stemmed 
Swamp Beggar-ticks. Fig. 4507. 
B. connata Muhl.; Willd. Sp. Pl. 3: 1718. 1804. 
Annual; glabrous throughout; stem erect, usu- 
ally branched, 6’-8° high, purple. Leaves peti- 
oled, lanceolate or oblong-lanceolate, sharply and 
coarsely serrate, thin, 2’-5’ long, 4’-1’ wide, apex 
acuminate, base tapering, the uppermost some- 
times sessile, nearly entire and acutish, the lower 
sometimes with a pair of basal lobes, decurrent 
on the petiole; heads several or numerous, pe- 
duncled, 4’-13’ broad; involucre campanulate or 
hemispheric, the outer bracts somewhat exceed- 
ing the ovate-oblong, inner ones; rays none, or 
I-5 and inconspicuous; disk-flowers orange; 
achenes cuneate or obovate, hairy and tubercled, 
or nearly glabrous, keeled, or angled, 2’-3” long, 
the margins with either erect or retrorse hairs, 
or both, the 2-4 pappus awns downwardly barbed, 
half as long as the achene. 
In swamps or moist soil, Rhode Island to Ontario, 
Minnesota, Delaware, Georgia, Kentucky, Missouri 
and Nebraska. Introduced into Europe. Cuckold. 
Harvest-lice. Pitchforks. Aug.—Oct. 
4. Bidens comosa (A. Gray) Wiegand. 
Leafy-bracted Tickseed. Fig. 4508 
. connata var. comosa A. Gray, Man. Ed. 5, 261. 1867. 
. comosa Wiegand, Bull. Torr. Club 24: 436. 1897. 
. riparia Greene, Pittonia 4: 261. 1901. 
. acuta (Wiegand) Britton, Man. 1001. 1901. 
Bothy 
Annual, glabrous; stem erect, branched, 6’-43° 
high, straw-colored. Leaves short-petioled, or sub- 
sessile, lanceolate to elliptic-lanceolate, coarsely ser- 
rate with mostly smaller teeth than in B. connata, 
tapering to each end, the petioles broadly margined; 
heads several or numerous, 4-13” broad; outer 
bracts of the involucre linear, spatulate or lanceo- 
late, foliaceous, erect or spreading, often toothed, 
2-4 times as long as the head; rays none; corollas 
mostly 4-lobed, pale greenish yellow; stamens and 
style included; achenes larger, 33’-53” long, evenly 
cuneate, very flat; pappus awns commonly 3, down- 
wardly barbed, somewhat shorter than the achene. 
In wet soil, Massachusetts to Illinois, North Dakota, 
New Jersey, West Virginia, | Kentucky and Kansas. 
Leaves thicker and paler than in B. connata. Aug.—Oct. 
fA \} fd £ 
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5. Bidens bidentoides (Nutt.) Britton. 
Swamp Beggar-ticks. Fig. 4509. 
Diodonta bidentoides Nutt. Trans. Am. Phil. Soc. 
(II) 7: 361. 1841. 
Coreopsis bidentoides T.& G. Fl. N. A. 2: 339. 1842. 
B. bidentoides Britton, Bull. Torr. Club 20: 281. 1893. 
a 
NYY Hi 
NY 
Closely resembles B. connata, glabrous through- 
out; stem branched, 1°-4° high. Leaves similar, 
lanceolate, sharply serrate, petioled, or the upper 
sessile and entire, acuminate at the apex, nar- 
nowed at the base; involucre narrowly or be- 
coming somewhat broadly campanulate, its outer 
bracts linear, foliaceous, not ciliate, usually much 
exceeding the oblong inner ones; rays none, or 
rarely present and very short; achenes linear- 
cuneate, 3”-5” long, their sides and the 2 slender 
pappus awns (rarely with 2 short intermediate 
awns) upwardly barbed or hispid. 
Muddy shores of the Delaware River and Bay in 
Pennsylvania, New Jersey, Delaware and Maryland. 
Aug.—Oct. 
